convertir code C en MATLAB

Version imprimable

21/05/2014, 21h19
zied113

1 pièce(s) jointe(s)

convertir code C en MATLAB

Bonsoir,

SVP je veux exécute le code ci -joint en C sous Matlab . Merci bcp

Pour commencer, il est plus respectueux de citer ses sources : Perception and Neurodynamics Laboratory (PNL) et plus précisément : http://www.cse.ohio-state.edu/~dwang...are/wang-nc97/

Le code est suffisamment simple pour être facilement transformé en MEX :

Code:

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       /*****************************************************************/
       /* This program is for 2D segmentation using the LEGION network  */
       /* The equations were modeled as a PDP algorithm for efficiency  */
       /* by DeLiang Wang in 7/94. For a detailed description of the    */
       /* algorithm see D.L. Wang and D. Terman: "Image segmentation    */
       /* based on oscillatory correlation", Neural Computation, Vol. 9 */
       /* pp. 805-836, 1997 (For errata see Neural Computation 9,       */
       /* 1623-1626, 1997), on page 822.                                */
       /*****************************************************************/
 
#include "mex.h"
#include "segment.h"
 
#define MAXVAL 32768.0
               /* 2147483648.0 or 32768.0,machine (HP or SUN) dependable*/
#define MAX 32767 /* 2147483647 or 32767, machine dependable */
#define GRAY 255  /* Maximum value of a pixel */
 
int bi();
int jump[2], z, Num = 1;             /* so we can change step size at will */
                               /* Num: number of the segments */
FILE *outfile, *fopen();
float x[N1][N2][2], lateral[N1][N2];
                      /* lateral: the sum of input from lateral connections */
float W[N1][N2][8];   /* strength of the interactions for 4 directions */
int stim[N1][N2], matrix[N1][N2];
int y[N1][N2], cycle[N1][N2], trigger[N1][N2];
     /* y: integer of x; cycle: test for 1st cycle; trigger: jumping signal */
 
 
void inputs(void)
{
   int i, j;
   int width, height, c;
   char magic[25];
   float stimulus = 0.2;
   FILE *IN;
 
   for (i = 0; i < N1; i++) 
     for (j = 0; j < N2; j++)
       matrix[i][j] = 0;
 
   IN = fopen("lake1.pgm", "r");
   fscanf(IN,"%s\n%d %d\n%d\n",magic,&width,&height,&c);
   fprintf(stderr,"[Type %s %dx%d colours %d]\n",magic,width,height,c);
 
   for(i=0;i<160;i++)  
      for(j=0;j<160;j++)
         stim[i][j] = getc(IN);
 
   fclose(IN);
}
 
void connections(void)
{
   int i, j, k;
   float baseline = 0.0, Wtotal = 6.0, sum;
 
   for (i = 0; i < N1; i++) /* for eight nearest neighbors */
     for (j = 0; j < N2; j++) {
       W[i][j][0] = W[i][j][1] = W[i][j][2] = W[i][j][3] = 0.0;
       W[i][j][4] = W[i][j][5] = W[i][j][6] = W[i][j][7] = 0.0;
     }
 
   for (i = 0; i < N1; i++) 
     for (j = 0; j < N2; j++) {
	 sum = 0.0;
 
         if (j-1 >= 0)
	    W[i][j][0] = (float) GRAY/(1+abs(stim[i][j]-stim[i][j-1]));
         if (i-1 >= 0 && j-1 >= 0)
	    W[i][j][1] = (float) GRAY/(1+abs(stim[i][j]-stim[i-1][j-1]));
         if (i-1 >= 0)
	    W[i][j][2] = (float) GRAY/(1+abs(stim[i][j]-stim[i-1][j]));
         if (i-1 >= 0 && j+1 < N2)
	    W[i][j][3] = (float) GRAY/(1+abs(stim[i][j]-stim[i-1][j+1]));
         if (j+1 < N2)
	    W[i][j][4] = (float) GRAY/(1+abs(stim[i][j]-stim[i][j+1]));
         if (i+1 < N1 && j+1 < N2) 
	    W[i][j][5] = (float) GRAY/(1+abs(stim[i][j]-stim[i+1][j+1]));
         if (i+1 < N1)
	    W[i][j][6] = (float) GRAY/(1+abs(stim[i][j]-stim[i+1][j]));
         if (i+1 < N1 && j-1 >= 0)
	    W[i][j][7] = (float) GRAY/(1+abs(stim[i][j]-stim[i+1][j-1]));
 
         for (k = 0; k < 8; k++) lateral[i][j] += W[i][j][k];
    }
}
 
void initiate(void)
{
   int i,j,t, temp;  /* labels for setting up display intervals */
 
   for (i = 0; i < N1; i++)   /* randomize the initial phases */
     for (j = 0; j < N2; j++) {
        y[i][j] = rand();
        x[i][j][0] = y[i][j]/(MAXVAL + 1.0);
	y[i][j] -= 2;
	if (y[i][j] < 0)
	  y[i][j] = 0;
	trigger[i][j] = 0;
	cycle[i][j] = 0;
     }
   z = 0; 
 
 /* initial display values for 2D */
   for (i = 0; i < N1; i++)
      for (j = 0; j < N2; j++) {
        temp = x[i][j][0]*RP;       
        fprintf(outfile, "%d ", temp);
      }
}
 
void select(void)
{
   int i, j, max, imax=0, jmax=0;
   float baseline = 1200.0, temp;
/* baseline 1200 -> 17 regions; 1000 -> 23 regions. Both reasonable */
 
   max = -1;
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++) {
       trigger[i][j] = 0;
       if (lateral[i][j] > baseline && y[i][j] != MAX && y[i][j] > max) {
	 max = y[i][j];
	 imax = i;
	 jmax = j;
       }
     }
 
   if (cycle[imax][jmax]) {     /* find out jumpers */
     for (i = 0; i < N1; i++)
       for (j = 0; j < N2; j++)
	 if (y[i][j] == max && cycle[i][j])
	   trigger[i][j] = 1;
   } else
     trigger[imax][jmax] = 1;
 
   for (i = 0; i < N1; i++)   /* advance oscillators on the left branch */
     for (j = 0; j < N2; j++) 
       if (y[i][j] != MAX && (cycle[i][j] || lateral[i][j] > baseline)) {
	 y[i][j] = y[i][j] + (MAX - max);
         x[i][j][0] = y[i][j]/(MAXVAL + 1.0);
       }
}
 
void evaluate(void)
{
   float temp, thetae = 2.0, temp2, temp3;
   int i,j,t, cat, count;  /* labels for setting up display intervals */
 
   jump[0] = 0;
 
   select();
   for ( t = 0; t < WIDTH-1; t++) {
      count = 0;
      for (i = 0; i < N1; i++)
	for (j = 0; j < N2; j++) { /* compute net input */
	  if (x[i][j][0] > thetae && jump[0] == 0) {  /* jumping down */
             x[i][j][1] = LP;
	     y[i][j] = -1;
	     cycle[i][j] = 1;
	     count++;
	  } else if (x[i][j][0] < thetae) {  /* summing up overall input */
             temp =  -20.0 * bi((float) z,0.5);  /* used to be 50 */
 
/* the following is based on traversing through strongest link */
             temp2 = 0.0;
             if (j-1 >= 0) {
                temp3 = W[i][j][0] * bi(x[i][j-1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i-1 >= 0 && j-1 >= 0) {
                temp3 = W[i][j][1] * bi(x[i-1][j-1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i-1 >= 0) {
                temp3 = W[i][j][2] * bi(x[i-1][j][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i-1 >= 0 && j+1 < N2) {
                temp3 = W[i][j][3] * bi(x[i-1][j+1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (j+1 < N2) {
                temp3 = W[i][j][4] * bi(x[i][j+1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i+1 < N1 && j+1 < N2) {
                temp3 = W[i][j][5] * bi(x[i+1][j+1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i+1 < N1) {
                temp3 = W[i][j][6] * bi(x[i+1][j][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i+1 < N1 && j-1 >= 0) {
                temp3 = W[i][j][7] * bi(x[i+1][j-1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             temp += temp2;
 
	     if (trigger[i][j] || temp > 0.25) {        /* jumping up */
	        x[i][j][1] = RP; 
		y[i][j] = MAX;
	        jump[1] = 1;
	        z++;
	     } else
	        x[i][j][1] = x[i][j][0];
	  } else 
	     x[i][j][1] = x[i][j][0];
	}
      z -= count;
 
      if (jump[1] == 0 && z == 0) 
        select();
 
    /* store for display in 2d case*/
      if (jump[1] == 0 && jump[0] == 1) {
mexPrintf("we are here \n");
	Num++;
        for (i = 0; i < N1; i++)
          for (j = 0; j < N2; j++) {
             if (z > 0) {
	          if (x[i][j][1] < thetae)
                     cat = 0;       
		  else cat = x[i][j][1];       
	     } else  
		  cat = x[i][j][1];       
             fprintf(outfile, "%d ", cat);
 
             if (Num < 25 && cat > 0)
                matrix[N1-1-i][j] = 26-Num;  /* 17 regions, or 23 */
	  }
      }
 
 
      for (i = 0; i < N1; i++)
         for (j = 0; j < N2; j++)  /* replace OLD by NEW */
           x[i][j][0] = x[i][j][1];
      jump[0] = jump[1];
      jump[1] = 0;
   }
}
 
void store(void)
{
   int i, j;
   FILE *out, *out1, *fopen();
 
   mexPrintf("The number of the segments/cycles is %d\n", Num);
 
   out = fopen("NUMBER", "w");
   out1 = fopen("Result", "w");
   fprintf(out, "%d ", Num);
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++)
       fprintf(out1, "%d ", matrix[i][j]);
   fclose(out);
   fclose(out1);
}	
 
void mexFunction(int nlhs, mxArray *plhs[],
        int nrhs, const mxArray *prhs[])
{
    int *pr_seed;
 
    pr_seed = (int *)mxGetData(prhs[0]);
 
    srand(*pr_seed);
 
    outfile = fopen("Out", "w");
 
    inputs();
    connections();
    initiate();
    evaluate();
    store();
    fclose(outfile);
}
 
int bi(x, threshold)
   float x, threshold;
{
    if (x > threshold) return (1);
    else return (0);
}

A compiler comme ceci :

Code:

mex segment.c

Et à utiliser comme ceci :

Code:

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seed = int32(5);
segment(seed);

22/05/2014, 12h43
zied113

Merci Mr.Jérôme Briot pour votre aide , mais je vous demande plus de détailles car je suis débutant en programmation ,

est ce que je dois convertie le code .txt en code .c puis en MEX ??? Merci d’avance
22/05/2014, 15h39
Jerome Briot

Comme mentionné dans la FAQ, il te faut tout d'abord un compilateur pour compiler le fichier MEX.

Quelle version de MATLAB utilises-tu ? Avec quel système d'exploitation ? 32 ou 64 bits ?

Voir la FAQ Quels sont les différents compilateurs supportés pour compiler un fichier MEX ? pour choisir un compilateur.
22/05/2014, 15h49
zied113

MATLAB 7.10.0 (R2010a) , windows 7 ,32 bits
22/05/2014, 16h24
Jerome Briot

OK, donc tu suis les instructions données ici Comment choisir le compilateur à utiliser pour créer un fichier MEX ? et tu choisis le compilateur Lcc dans la liste proposée.

Code:

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Please verify your choices: 
 
Compiler: Lcc-win32 C 2.4.1 
Location: C:\PROGRA~1\MATLAB\R2010a\sys\lcc

J'ai essai , matlab m'affiche ce message :

Code:

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Are these correct [y]/n? y 
 
Trying to update options file: C:\Users\zied\AppData\Roaming\MathWorks\MATLAB\R2010a\mexopts.bat 
From template:              C:\PROGRA~1\MATLAB\R2010a\bin\win32\mexopts\lccopts.bat 
 
Done . . . 
 
************************************************************************** 
  Warning: The MATLAB C and Fortran API has changed to support MATLAB 
           variables with more than 2^32-1 elements.  In the near future 
           you will be required to update your code to utilize the new 
           API. You can find more information about this at: 
           http://www.mathworks.com/support/sol...ution=1-5C27B9 
           Building with the -largeArrayDims option enables the new API. 
**************************************************************************

22/05/2014, 21h05
Jerome Briot

Donc maintenant tu enregistres le code C que j'ai fourni précédemment dans un fichier segment.c

Tu copies le fichier segment.h dans le même dossier que segment.c puis tu fais :

Code:

mex segment.c
22/05/2014, 22h07
zied113

2 pièce(s) jointe(s)

j'ai copier les deux fichier segment .c + segment.h a "C:\PROGRA~1\MATLAB\R2010A\BIN\"
j'ai executé la commande mex segment.c

Matlab affiche ce message

C:\PROGRA~1\MATLAB\R2010A\BIN\MEX.PL: Error: 'segment.c' not found.

??? Error using ==> mex at 222
Unable to complete successfully.

:''(
23/05/2014, 07h13
Jerome Briot

Citation:

Envoyé par zied113

j'ai copier les deux fichier segment .c + segment.h a "C:\PROGRA~1\MATLAB\R2010A\BIN\"

Premièrement, il ne faut pas utiliser le fichier segment.c que tu as téléchargé sur le site du "Perception and Neurodynamics Laboratory" mais celui que j'ai modifié dans ce message . As-tu au moins remarqué les quelques différences entre les deux codes… j'en doute.

Deuxièmement, il ne faut pas copier les fichiers dans le dossier d'installation de MATLAB.
Place les, par exemple, dans le dossier dans lequel MATLAB démarre.

Pour finir, il faut absolument que le dossier où se trouvent ces deux fichiers soit le dossier courant de MATLAB avant de les compiler avec mex
23/05/2014, 11h02
zied113
Bonjour , normalement c'est bon , matlab m’affiche le message suivant
Code:

1 2 3 4 5 6 7 >> mex segment.c seed = int32(5); segment(seed); we are here ....... we are here The number of the segments/cycles is 348
Mais la question qui ce pose comment modifier l'Input de segment.c avec mon Input ??????? !!!!!

en attendant monsieur votre réponse veuillez agréer mes salutations les meilleures.
23/05/2014, 11h16
Jerome Briot

Citation:

Envoyé par zied113

Mais la question qui ce pose comment modifier l'Input de segment.c avec mon Input ??????? !!!!!

C'est à dire ?

Tu veux appliquer le code sur une autre image que celle mentionnée ici ?

Code:

IN = fopen("lake1.pgm", "r");
23/05/2014, 11h47
zied113

oui exactement c'est ca

Voici une version :

Code:

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       /*****************************************************************/
       /* This program is for 2D segmentation using the LEGION network  */
       /* The equations were modeled as a PDP algorithm for efficiency  */
       /* by DeLiang Wang in 7/94. For a detailed description of the    */
       /* algorithm see D.L. Wang and D. Terman: "Image segmentation    */
       /* based on oscillatory correlation", Neural Computation, Vol. 9 */
       /* pp. 805-836, 1997 (For errata see Neural Computation 9,       */
       /* 1623-1626, 1997), on page 822.                                */
       /*****************************************************************/
 
#include "mex.h"
#include "segment.h"
 
#define MAXVAL 32768.0
               /* 2147483648.0 or 32768.0,machine (HP or SUN) dependable*/
#define MAX 32767 /* 2147483647 or 32767, machine dependable */
#define GRAY 255  /* Maximum value of a pixel */
 
int bi();
int jump[2], z, Num = 1;             /* so we can change step size at will */
                               /* Num: number of the segments */
FILE *outfile, *fopen();
float x[N1][N2][2], lateral[N1][N2];
                      /* lateral: the sum of input from lateral connections */
float W[N1][N2][8];   /* strength of the interactions for 4 directions */
int stim[N1][N2], matrix[N1][N2];
int y[N1][N2], cycle[N1][N2], trigger[N1][N2];
     /* y: integer of x; cycle: test for 1st cycle; trigger: jumping signal */
 
 
int inputs(char *filename)
{
   int i, j;
   int width, height, c;
   char magic[25];
   float stimulus = 0.2;
   FILE *IN;
 
   for (i = 0; i < N1; i++) 
     for (j = 0; j < N2; j++)
       matrix[i][j] = 0;
 
   IN = fopen(filename, "r");
   if(IN==NULL)
       return -1;
 
   fscanf(IN,"%s\n%d %d\n%d\n",magic,&width,&height,&c);
   fprintf(stderr,"[Type %s %dx%d colours %d]\n",magic,width,height,c);
 
   for(i=0;i<160;i++)  
      for(j=0;j<160;j++)
         stim[i][j] = getc(IN);
 
   fclose(IN);
 
   return 0;
}
 
void connections(void)
{
   int i, j, k;
   float baseline = 0.0, Wtotal = 6.0, sum;
 
   for (i = 0; i < N1; i++) /* for eight nearest neighbors */
     for (j = 0; j < N2; j++) {
       W[i][j][0] = W[i][j][1] = W[i][j][2] = W[i][j][3] = 0.0;
       W[i][j][4] = W[i][j][5] = W[i][j][6] = W[i][j][7] = 0.0;
     }
 
   for (i = 0; i < N1; i++) 
     for (j = 0; j < N2; j++) {
	 sum = 0.0;
 
         if (j-1 >= 0)
	    W[i][j][0] = (float) GRAY/(1+abs(stim[i][j]-stim[i][j-1]));
         if (i-1 >= 0 && j-1 >= 0)
	    W[i][j][1] = (float) GRAY/(1+abs(stim[i][j]-stim[i-1][j-1]));
         if (i-1 >= 0)
	    W[i][j][2] = (float) GRAY/(1+abs(stim[i][j]-stim[i-1][j]));
         if (i-1 >= 0 && j+1 < N2)
	    W[i][j][3] = (float) GRAY/(1+abs(stim[i][j]-stim[i-1][j+1]));
         if (j+1 < N2)
	    W[i][j][4] = (float) GRAY/(1+abs(stim[i][j]-stim[i][j+1]));
         if (i+1 < N1 && j+1 < N2) 
	    W[i][j][5] = (float) GRAY/(1+abs(stim[i][j]-stim[i+1][j+1]));
         if (i+1 < N1)
	    W[i][j][6] = (float) GRAY/(1+abs(stim[i][j]-stim[i+1][j]));
         if (i+1 < N1 && j-1 >= 0)
	    W[i][j][7] = (float) GRAY/(1+abs(stim[i][j]-stim[i+1][j-1]));
 
         for (k = 0; k < 8; k++) lateral[i][j] += W[i][j][k];
    }
}
 
void initiate(void)
{
   int i,j,t, temp;  /* labels for setting up display intervals */
 
   for (i = 0; i < N1; i++)   /* randomize the initial phases */
     for (j = 0; j < N2; j++) {
        y[i][j] = rand();
        x[i][j][0] = y[i][j]/(MAXVAL + 1.0);
	y[i][j] -= 2;
	if (y[i][j] < 0)
	  y[i][j] = 0;
	trigger[i][j] = 0;
	cycle[i][j] = 0;
     }
   z = 0; 
 
 /* initial display values for 2D */
   for (i = 0; i < N1; i++)
      for (j = 0; j < N2; j++) {
        temp = x[i][j][0]*RP;       
        fprintf(outfile, "%d ", temp);
      }
}
 
void select(void)
{
   int i, j, max, imax=0, jmax=0;
   float baseline = 1200.0, temp;
/* baseline 1200 -> 17 regions; 1000 -> 23 regions. Both reasonable */
 
   max = -1;
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++) {
       trigger[i][j] = 0;
       if (lateral[i][j] > baseline && y[i][j] != MAX && y[i][j] > max) {
	 max = y[i][j];
	 imax = i;
	 jmax = j;
       }
     }
 
   if (cycle[imax][jmax]) {     /* find out jumpers */
     for (i = 0; i < N1; i++)
       for (j = 0; j < N2; j++)
	 if (y[i][j] == max && cycle[i][j])
	   trigger[i][j] = 1;
   } else
     trigger[imax][jmax] = 1;
 
   for (i = 0; i < N1; i++)   /* advance oscillators on the left branch */
     for (j = 0; j < N2; j++) 
       if (y[i][j] != MAX && (cycle[i][j] || lateral[i][j] > baseline)) {
	 y[i][j] = y[i][j] + (MAX - max);
         x[i][j][0] = y[i][j]/(MAXVAL + 1.0);
       }
}
 
void evaluate(void)
{
   float temp, thetae = 2.0, temp2, temp3;
   int i,j,t, cat, count;  /* labels for setting up display intervals */
 
   jump[0] = 0;
 
   select();
   for ( t = 0; t < WIDTH-1; t++) {
      count = 0;
      for (i = 0; i < N1; i++)
	for (j = 0; j < N2; j++) { /* compute net input */
	  if (x[i][j][0] > thetae && jump[0] == 0) {  /* jumping down */
             x[i][j][1] = LP;
	     y[i][j] = -1;
	     cycle[i][j] = 1;
	     count++;
	  } else if (x[i][j][0] < thetae) {  /* summing up overall input */
             temp =  -20.0 * bi((float) z,0.5);  /* used to be 50 */
 
/* the following is based on traversing through strongest link */
             temp2 = 0.0;
             if (j-1 >= 0) {
                temp3 = W[i][j][0] * bi(x[i][j-1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i-1 >= 0 && j-1 >= 0) {
                temp3 = W[i][j][1] * bi(x[i-1][j-1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i-1 >= 0) {
                temp3 = W[i][j][2] * bi(x[i-1][j][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i-1 >= 0 && j+1 < N2) {
                temp3 = W[i][j][3] * bi(x[i-1][j+1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (j+1 < N2) {
                temp3 = W[i][j][4] * bi(x[i][j+1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i+1 < N1 && j+1 < N2) {
                temp3 = W[i][j][5] * bi(x[i+1][j+1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i+1 < N1) {
                temp3 = W[i][j][6] * bi(x[i+1][j][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             if (i+1 < N1 && j-1 >= 0) {
                temp3 = W[i][j][7] * bi(x[i+1][j-1][0], thetae);
                if (temp2 < temp3) temp2 = temp3; }
             temp += temp2;
 
	     if (trigger[i][j] || temp > 0.25) {        /* jumping up */
	        x[i][j][1] = RP; 
		y[i][j] = MAX;
	        jump[1] = 1;
	        z++;
	     } else
	        x[i][j][1] = x[i][j][0];
	  } else 
	     x[i][j][1] = x[i][j][0];
	}
      z -= count;
 
      if (jump[1] == 0 && z == 0) 
        select();
 
    /* store for display in 2d case*/
      if (jump[1] == 0 && jump[0] == 1) {
mexPrintf("we are here \n");
	Num++;
        for (i = 0; i < N1; i++)
          for (j = 0; j < N2; j++) {
             if (z > 0) {
	          if (x[i][j][1] < thetae)
                     cat = 0;       
		  else cat = x[i][j][1];       
	     } else  
		  cat = x[i][j][1];       
             fprintf(outfile, "%d ", cat);
 
             if (Num < 25 && cat > 0)
                matrix[N1-1-i][j] = 26-Num;  /* 17 regions, or 23 */
	  }
      }
 
 
      for (i = 0; i < N1; i++)
         for (j = 0; j < N2; j++)  /* replace OLD by NEW */
           x[i][j][0] = x[i][j][1];
      jump[0] = jump[1];
      jump[1] = 0;
   }
}
 
void store(void)
{
   int i, j;
   FILE *out, *out1, *fopen();
 
   mexPrintf("The number of the segments/cycles is %d\n", Num);
 
   out = fopen("NUMBER", "w");
   out1 = fopen("Result", "w");
   fprintf(out, "%d ", Num);
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++)
       fprintf(out1, "%d ", matrix[i][j]);
   fclose(out);
   fclose(out1);
}	
 
void mexFunction(int nlhs, mxArray *plhs[],
        int nrhs, const mxArray *prhs[])
{
    int *pr_seed, status;
    mwSize buflen;
    char *buf;
 
    pr_seed = (int *)mxGetData(prhs[0]);
 
    buflen = mxGetM(prhs[1])*mxGetN(prhs[1]);
    buf = mxCalloc(buflen, sizeof(char));
 
    mxGetString(prhs[1], buf, buflen+1);
 
    srand(*pr_seed);    
 
    status = inputs(buf);
 
    if(status) {        
        mxFree(buf);
        mexErrMsgTxt("Pb with file");
    }        
 
    outfile = fopen("Out", "w");
    connections();
    initiate();
    evaluate();
    store();
    fclose(outfile);
 
    mxFree(buf);
}
 
int bi(x, threshold)
   float x, threshold;
{
    if (x > threshold) return (1);
    else return (0);
}

A utiliser comme ceci :

Code:

1
2
seed = int32(5);
segment(seed,'lake1.pgm');

23/05/2014, 15h22
zied113

1 pièce(s) jointe(s)
mon entrée dans la fonction segmentation est une image de "Canal de corrélation croisée" d'un signal mixer, le Canal corrélation croisée est définie dans matlab par cette fonction :

Code:

cross = crossChanCorr(c)

jai tapé la code suivant
Code:

1 2 3 mex segment.c seed = int32(5); segment(seed,cross);
j'ai obtenu le message suivant :
Code:

1 2 we are here The number of the segments/cycles is 695
je sais pas est ce que juste ou nn !!!!!!

vous trouvez ci joint limage de "Canal de corrélation croisée" avec le système.
23/05/2014, 17h28
Jerome Briot

La ligne suivante n'a pas besoin d'être répétée à chaque fois :

Code:

mex segment.c

Sauf si tu modifies le contenu du fichier segment.c

Pour le reste, tout ce que je peux dire c'est que le code génère trois fichiers : Out, NUMBER et Result

Bonjour M. Jérôme Briot , j'ai téléchargé le code de groupe.c et groupe.h par le lien : http://www.cse.ohio-state.edu/pnl/sh...tnn99/dynamic/

J'ai essayé de le exécuté sur matlab par la code :

Code:

mex group.c

matlab affiche l'erreur suivante
Code:

1 2 3 4 5 6 7 8 9 10 mex group.c c:\users\zied\appdata\local\temp\mex_kf~1\group.obj: multiple definition of _main first definition is in file c:\progra~1\matlab\r2010a\sys\lcc\lib\libcrt0.obj Specified export _mexFunction is not defined Missing exports. Aborting C:\PROGRA~1\MATLAB\R2010A\BIN\MEX.PL: Error: Link of 'group.mexw32' failed. ??? Error using ==> mex at 222 Unable to complete successfully.

25/05/2014, 12h41
Invité

Citation:

Envoyé par Dut

Premièrement, il ne faut pas utiliser le fichier segment.c que tu as téléchargé sur le site du "Perception and Neurodynamics Laboratory" mais celui que j'ai modifié dans ce message . As-tu au moins remarqué les quelques différences entre les deux codes… j'en doute.

Différences sûrement toujours pas remarquées...
Il serait temps de lire minutieusement le contenu de ce lien afin de bien comprendre la logique des fichiers MEX qui ne passent pas par une fonction d'entrée main() mais mexFunction() !
26/05/2014, 16h18
zied113

bonjour , j'ai pas trouvé la bonne explication dans ce lien http://matlab.developpez.com/faq/?page=mex
26/05/2014, 20h38
Jerome Briot

Ouvre les deux fichiers segment.c (l'original et celui que j'ai modifié) côte à côte dans un éditeur de texte.

Compare les lignes par lignes pour bien identifier les différences, dont la plus notable est, comme l'a fait remarqué Winjerome, l'absence de main dans le MEX

Bonjour , J'ai modifier le code mais matlab m'affiche des erreur !!!!

le code group.c modifier

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/*****************************************************************/
       /* This program is for grouping in speech segregation using         */
       /* Terman-Wang oscillators. These equations are solved           */
       /* in the sigular limit (Linsay-Wang), and the potential is      */
       /* included here. Real signals.  by DeLiang Wang, 8/97           */
       /*****************************************************************/
#include "mex.h"
#include "group.h"
 
#define MAXVAL 32768.0
               /* 2147483648.0 or 32768.0,machine (HP or SUN) dependable*/
#define MAX 32767 /* 2147483647 or 32767, machine dependable */
 
float Gamma = 6.5;         /* CAREFUL: this value offset Wz = 1.5 */
float alpha = 5.0;
float theta = -0.5;
float lambda = 0.1;        /* rate of developing potential */
float time = 0.0;          /* global time */
float rnd(), getx(), getxx(), lateral();
int Hp[N1][N2];        /* argument to the Heaviside for potential */
int Num = 0, longseg;           /* number of major phase updates */
 
float y[N1][N2],cubic[N1][N2],p[N1][N2],show[M][STEPS];
float shows[Ms][STEPS], showp[Mp][STEPS];
float W[N1][N2][N1];   /* strength of the interactions */
float input[N1][N2];  /* overall input an oscillator receives */
float We = 0.5, Wi = -0.5; /* We: total excit weight; C: count */
int branch[N1][N2], ext[N1][N2], ext2[N1][N2], segment[SEG][2];
int speech[N1][N2], phone[N1][N2]; /* for storing and display */
int chance[SEG], jumpup[SEG];
     /* branch: keeps track of whether an oscillator is on LB or RB */
     /* ext2: segment information */
 
void inputs(void)
{
   FILE *fopen(), *finput, *fout;
   int i, j, k, l, maxy, temp, temp1, temp2, label[N1];
   int width, height, c;
   char magic[25];
   float stim = 0.2;
 
   for (i = 0; i < N1; i++) 
     for (j = 0; j < N2; j++)
       input[i][j] = -10.0;
 
   finput = fopen("v8n6.pitchmask.pgm", "r");
   fscanf(finput,"%s\n%d %d\n%d\n",magic,&width,&height,&c);
   for(j=0;j<N2;j++) 
     for(i=0;i<N1;i++)
        fscanf(finput, "%d",&ext[i][j]); 
 
   finput = fopen("v8n6-seg.pgm", "r");
   fscanf(finput,"%s\n%d %d\n%d\n",magic,&width,&height,&c);
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
        fscanf(finput, "%d",&ext2[N1-1-i][j]); 
 
   /* for storing and display purposes */
   finput = fopen("Snap1", "r");
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
        fscanf(finput, "%d",&speech[i][j]); 
   finput = fopen("Snap2", "r");
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
        fscanf(finput, "%d",&phone[i][j]); 
 
   /* masking by segments */
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++) 
       if (ext2[i][j] == 0)
	 ext[i][j] = 0;
 
   /*
   fout = fopen("phone1", "w");
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
        fprintf(fout, "%d ",ext[i][j]); 
   fclose(fout);
 
   fout = fopen("phone2", "w");
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
        fprintf(fout, "%d ",ext2[i][j]); 
   fclose(fout);
   */
 
   /* identify longest segment and clip accordingly */
   for (i = 0; i < SEG; i++) {
     segment[i][0] = N2;
     segment[i][1] = 0;
   }
 
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++) {
       temp = ext2[i][j];
       if (segment[temp][0] > j)
	 segment[temp][0] = j;
       if (segment[temp][1] < j)
	 segment[temp][1] = j;
     }
 
   maxy = 0;
   for (i = 1; i < SEG; i++) /* excluding the background */
     if (segment[i][1] - segment[i][0] + 1 > maxy) {
       maxy = segment[i][1] - segment[i][0] + 1;
       longseg = i;
     }
   mexprintf("longest segment is %d, and has columns %d\n", longseg, maxy);
 
   for (j = 0; j < segment[longseg][0]; j++)
     for (i = 0; i < N1; i++)
       ext[i][j] = 0;
   for (j = segment[longseg][1] + 1; j < N2; j++)
     for (i = 0; i < N1; i++)
       ext[i][j] = 0;
 
   /* recompute segment lengths */
   k = segment[longseg][0]; l = segment[longseg][1];
   for (i = 0; i < SEG; i++) {
     segment[i][0] = N2;
     segment[i][1] = 0;
   }
 
   for (i = 0; i < N1; i++)
     for (j = k; j <= l; j++) {
       temp = ext2[i][j];
       if (segment[temp][0] > j)
	 segment[temp][0] = j;
       if (segment[temp][1] < j)
	 segment[temp][1] = j;
     }
 
   for (i = 1; i < SEG; i++)
     if (segment[i][1] - segment[i][0] < 2) { /* threshold out <3-frame seg */
       for(k=0;k<N1;k++)                      /* caused by clipping         */ 
         for(l=0;l<N2;l++)
           if (ext2[k][l] == i)
	     ext[k][l] = 0;
     }
 
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
       if (ext[i][j] > 0)
	 input[i][j] = stim;
 
 
   /* smoothen within each column of each segment */
   for (j = segment[longseg][0]; j <= segment[longseg][1]; j++) {
     for (i = 0; i < N1; i++)
       label[i] = 0;
 
     for (i = 0; i < N1; i++)
       if (label[i] == 0 && ext[i][j] > 0) {
	 temp = ext2[i][j]; temp1 = temp2 = 0;
	 for (k = 0; k < N1; k++)
	   if (ext2[k][j] == temp) {
	     if (ext[k][j] == 1)
	       temp1++;
	     else if (ext[k][j] == 2)
	       temp2++;
	   }
	 for (k = 0; k < N1; k++)
	   if (ext2[k][j] == temp && ext[k][j] > 0) {
	     label[k] = 1;
	     if (temp1 > temp2)
	       ext[k][j] = 1;
             else
	       ext[k][j] = 2;
	   }
       }
   }
 
 
   fout = fopen("phone3", "w");
   for(i=0;i<N1;i++)
     for(j=0;j<N2;j++)
        fprintf(fout, "%d ",ext[i][j]); 
   fclose(fout);
 
/* high "potential" */
   input[8][N2/2] = 0.21; /* 20 for v3n6; 8 for v8n6 */
 
   mexprintf("The segment number with high potential is %d\n", ext2[8][N2/2]);
}
 
void connections(void)
{
   int i, j, k; /* e: excitatory; i: inhibitory; l: lateral */
 
   for (i = 0; i < N1; i++) {
     for (j = segment[longseg][0]; j <= segment[longseg][1]; j++) {
       for (k = 0; k < N1; k++) /* initialize connections */
	 W[i][j][k] = 0.0;
       if (ext[i][j] == 1) {
         for (k = 0; k < N1; k++) 
	   if (k != i && ext2[k][j] != ext2[i][j] ) {
	     if (ext[k][j] == 1)
	       W[i][j][k] = We;
             else if (ext[k][j] == 2)
	       W[i][j][k] = Wi;
	   }
       }
       else if (ext[i][j] == 2)
         for (k = 0; k < N1; k++) 
	   if (k != i && ext2[k][j] != ext2[i][j] ) {
  	     if (ext[k][j] == 2)
	       W[i][j][k] = We;
             else if (ext[k][j] == 1)
	       W[i][j][k] = Wi;
	   }
     }
   }
 
   mexprintf("weights are \n");
   mexprintf("weights are \n");
   mexprintf("W[0][0] are %f %f\n", W[0][0][1], W[0][0][2]);
   mexprintf("W[1][4] are %f %f\n", W[1][4][0], W[1][4][2]);
   mexprintf("W[2][6] are %f %f\n", W[2][6][0], W[2][6][1]);
 
   mexprintf("\n");
}
 
void initiate(void)
{
   int i,j,seed,counts,countp;  /* labels for setting up display intervals */
   float angle, temp;
 
   mexprintf("Input a seed now\n"); /* 2342 for potential; 111 no potent.*/
   scanf("%d",&seed); 
   srand(seed); 
 
/* randomize the initial phases */
   temp = 2.0*Gamma*rnd();
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++) {  /* Initial phases */
       if (ext[i][j] > 0)
	 y[i][j] = temp + input[i][j];
       else
	 y[i][j] = 2.0*Gamma*rnd();
 
       branch[i][j] = 0;
 
       /*
       p[i][j] = 0.0;
 
       Hp[i][j] = 0;
       */
 
       cubic[i][j] = input[i][j];
     }
 
   for (i = 0; i < SEG; i++) {
     chance[i] = 1;
     jumpup[i] = 0;
   }
 
 /* initial display values for 1D */
   for (i = 0; i < N1; i = i+2)
       show[i/2][0] = getxx(y[i][COL]-cubic[i][COL], 0);
 
 /* initial display values for two storage arrays */
   counts = countp = 0; /* for collecting display data for two streams */
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++) {
	if (speech[i][j] && (counts%20 == 0))
          shows[counts/20][0] = getxx(y[i][j]-cubic[i][j],0);
	else if (phone[i][j] && (countp%20 == 0))
          showp[countp/20][0] = getxx(y[i][j]-cubic[i][j],0);
 
	if (speech[i][j])
	  counts++;
	else if (phone[i][j])
	  countp++;
     }
 
 /* initial display values for 2D */
   /*
   for (i = 0; i < N1; i++)
     for (j = 0; j < N2; j++)
       show[N2*i+j][0] = getxx(y[i][j]-cubic[i][j], 0);
   */
}
 
findtmin(tmin, mu, ilead, jlead) 
  float *tmin, *mu;
  int *ilead, *jlead;
     /* Find shortest time-to-knee when no oscillator is ready to jump */
{
   int i, j, il, jl, ir, jr;
   float temp, minl = MAXVAL, minr = MAXVAL, yknee;
 
   for (i = 0; i < N1; i++)
     for (j = segment[longseg][0]; j <= segment[longseg][1]; j++) {
       if (branch[i][j]) {          /* on RB */
	 yknee = (y[i][j]-2.0*Gamma)/(cubic[i][j]+4.0-2.0*Gamma);
	 if (yknee < minr && yknee > 0.0)  /* exclude stable fixed point */
	   {minr = yknee; ir = i; jr = j;}
       }
       else {                       /* on LB */
	 yknee = y[i][j]/cubic[i][j];
	 if (yknee < minl && yknee > 0.0)  /* exclude stable fixed point */
  	   {minl = yknee; il = i; jl = j;}
       }
     }
 
   if (minl < 1.0)
     {*tmin = 0.0; *mu = 1.0; *ilead = il; *jlead = jl;}
   else if (minr < 1.0)
     {*tmin = 0.0; *mu = 1.0; *ilead = ir; *jlead = jr;}
   else {
     *tmin = log(minl);
     *mu = minl;
     *ilead = il;
     *jlead = jl;
     temp = log(minr);
     if (temp < *tmin) {       
       *tmin = temp;
       *mu = minr;
       *ilead = ir; *jlead = jr;
     } 
   }
}
 
void jump(void)      /* activity at the jump (up or down) time */
{       
   int i, j, k, l, count, jumped = 1, Tij = 2, flag = 1, cat[N1][N2];
                                               /* Tij: permanent weight */
   int temp, curseg;
   float We1 = 4.0, We2 = 0.1;
 
   while (jumped) {
      jumped = 0;
      for (i = 0; i < N1; i++)
	for (j = 0; j < N2; j++)
	  cat[i][j] = 0;
 
      for (i = 0; i < N1; i++)
	for (j = segment[longseg][0]; j <= segment[longseg][1]; j++) 
	if (ext[i][j] > 0 && ext2[i][j] > 0) { 
                                                      /* compute net input */
	  if (p[i][j] > theta)
	                                      /* thrshld for exp(-alpha*t) */
	    cubic[i][j] = input[i][j];
          else
	    cubic[i][j] = baseline;
 
	  /* update cubics within each segment */
	  count = 0;
	  curseg = ext2[i][j];
	  for (k = segment[curseg][0]; k <= segment[curseg][1]; k++) {
	    temp = 0;
	    for (l = 0; l < N1; l++)
	      if (ext2[l][k] == ext2[i][j] && branch[l][k])
		temp = 1;
	    if (temp == 1)
	      count++;
	  }
 
	  temp = ext2[i][j];
          if (ext[i][j]>0 && count>(1+segment[temp][1]-segment[temp][0])/2)  
	                           /* strict majarity rule: >; less >= (1+.) */
	    cubic[i][j] += We1;
	  else if (ext[i][j] > 0 
		   && segment[temp][1] == segment[temp][0]+count*2-1) { 
	                           /* break symmetry */
	    if (chance[curseg])
	      cubic[i][j] += We2;
	    else
	      cubic[i][j] += We1;
	  }
	  else if (ext[i][j] > 0 && count > 0)
	    cubic[i][j] += We2;
 
	  /* update cubics within each column */
	  if (branch[i][j] == 0) 
	    cubic[i][j] += lateral(i,j);
 
	  if (!branch[i][j] && y[i][j]<cubic[i][j]+error) {  /* jump up */
  	        cat[i][j] = 1;
		jumped = 1;
		cubic[i][j] -= lateral(i,j);
		jumpup[curseg] = 1;
	  } else if (branch[i][j] && y[i][j]>cubic[i][j]+4.0-error) {
	                                                     /* jump down */
	        cat[i][j] = -1;
		jumped = 1;
		cubic[i][j] += lateral(i,j);
	  }
 
      }
 
      for (i = 0; i < N1; i++)
	for (j = 0; j < N2; j++) { /* update jumps */
	  if (cat[i][j] > 0)
	    branch[i][j] = 1;
	  else if (cat[i][j] < 0)
	    branch[i][j] = 0;
	}
   }
 
   for (i = 1; i < SEG; i++)
     if (jumpup[i]) {
       temp = 0;
 
       for (k = segment[i][0]; k <= segment[i][1]; k++) 
	 for (l = 0; l < N1; l++)
	   if (ext2[l][k] == i && branch[l][k])
	     temp = 1;
 
       if (temp == 0) {
	 chance[i] = 1 - chance[i];
	 jumpup[i] = 0;
       }
     }
 
/* compute Hp[i][j] */
   /*
   for (i = 0; i < N1; i++)  
     for (j = 0; j < N2; j++) { 
       Hp[i][j] = 0;
       if (i-1 >= 0 && branch[i-1][j])
         Hp[i][j] += Tij;
       if (i+1 < N1 && branch[i+1][j])
	 Hp[i][j] += Tij;
       if (j-1 >= 0 && branch[i][j-1])
	 Hp[i][j] += Tij;
       if (j+1 < N2 && branch[i][j+1])
	 Hp[i][j] += Tij;
 
       if (Hp[i][j] > 7)
	 Hp[i][j] = 1;
       else 
	 Hp[i][j] = 0;
     }
   */
}
 
void evaluate(void)
{
   float intv, mu, current, length, xval, yval, angle, temp, cat;
   int ilead, jlead, num; /* leading oscillator, and no of jumpers */
   int counts, countp;    /* counts for speech and phone respectively */
   int i,j,step,bef,aft;  /* labels for setting up display intervals */
   FILE *outf, *fopen();
 
   outf = fopen("Out", "w");
   bef = 0;
   length = delta*(STEPS-1);      /* reduce one step to facilitate display */
   while (time < length) {
     findtmin(&intv, &mu, &ilead, &jlead);
 
     aft = (time+intv)/delta;
 
    /* store for display in 1d case*/
 
     for (step = bef; step < aft && step < STEPS-1; step++) {
       for (i = 0; i < N1; i = i+2) {
           temp = -((1.0+step)*delta - time);
	   if (branch[i][COL])
	     yval = (y[i][COL] - 2*Gamma)*exp(temp) + 2*Gamma - cubic[i][COL];
	   else
	     yval = y[i][COL]*exp(temp) - cubic[i][COL];
 
           show[i/2][step+1] = getxx(yval,branch[i][COL]);
       }
       counts = countp = 0; /* for collecting display data for two streams */
       for (i = 0; i < N1; i++)
         for (j = 0; j < N2; j++) {
	   if (speech[i][j] && (counts%20 == 0)) {
             temp = -((1.0+step)*delta - time);
	     if (branch[i][j])
	       yval = (y[i][j] - 2*Gamma)*exp(temp) + 2*Gamma - cubic[i][j];
	     else
	       yval = y[i][j]*exp(temp) - cubic[i][j];
 
             shows[counts/20][step+1] = getxx(yval,branch[i][j]);
	   } else if (phone[i][j] && (countp%20 == 0)) {
             temp = -((1.0+step)*delta - time);
	     if (branch[i][j])
	       yval = (y[i][j] - 2*Gamma)*exp(temp) + 2*Gamma - cubic[i][j];
	     else
	       yval = y[i][j]*exp(temp) - cubic[i][j];
 
             showp[countp/20][step+1] = getxx(yval,branch[i][j]);
	   }
 
	   if (speech[i][j])
	     counts++;
	   else if (phone[i][j])
	     countp++;
         }
     }
 
 
    /* store for display in 2d case*/
/*
     for (step = bef; step < aft && step < STEPS-1; step++) {
       for (i = 0; i < N1; i++)
         for (j = 0; j < N2; j++) {
           temp = -((1.0+step)*delta - time);
	   if (branch[i][j])
	     yval = (y[i][j] - 2*Gamma)*exp(temp) + 2*Gamma - cubic[i][j];
	   else
	     yval = y[i][j]*exp(temp) - cubic[i][j];
 
           show[N2*i+j][step+1] = getxx(yval,branch[i][j]);
         }
     }
*/
 
     for (i = 0; i < N1; i++) /* advance oscillators */
       for (j = 0; j < N2; j++) {
	 if (branch[i][j])
	   y[i][j] = (y[i][j]-2.0*Gamma)/mu + 2.0*Gamma;
	 else
	   y[i][j] = y[i][j]/mu;
       }
 
/* update oscillator potential */
     /*
     for (i = 0; i < N1; i++) 
       for (j = 0; j < N2; j++)
	 if (Hp[i][j] && input[i][j] > 0.0)
	   p[i][j] = 1.0-(1.0-p[i][j])/mu;
 
     */
 
     if (branch[ilead][jlead]) {
       branch[ilead][jlead] = 0;
       /*       priming(jlead);*/
       cubic[ilead][jlead] += lateral(ilead,jlead);
     }
     else {
       branch[ilead][jlead] = 1;
       /*       priming(jlead);*/
       cubic[ilead][jlead] -= lateral(ilead,jlead);
     }
 
     jump();            /* fast time activity */
 
     Num++;
     mexprintf("Num = %d, time = %f, intv = %f\n", Num, time, intv);
 
     for(i=0;i<N1;i++)
       for(j=0;j<N2;j++)
         fprintf(outf, "%d ",branch[i][j]); 
 
     time += intv;      
     bef = aft;
   }
   fclose(outf);
}
 
void store(void)
{
   int i,j,t,count;
   float max_v = 0.0, min_v = 0.0;
   FILE *outfile,*out,*fopen();
 
   outfile = fopen("Output", "w");
   out = fopen("NUMBER", "w");
   fprintf(out, "%d ", Num);
   mexprintf("The number of the segments/cycles is %d\n", Num);
 
   /*
   for (i = 0; i < M; i++) 
      for (t = 0; t < STEPS; t++)  {
        if (show[i][t] > max_v)
          max_v = show[i][t];
        if (show[i][t] < min_v)
          min_v = show[i][t];
      }
      */
   for (i = 0; i < Ms; i++) 
      for (t = 0; t < STEPS; t++)  {
        if (shows[i][t] > max_v)
          max_v = shows[i][t];
        if (shows[i][t] < min_v)
          min_v = shows[i][t];
      }
   for (i = 0; i < Mp; i++) 
      for (t = 0; t < STEPS; t++)  {
        if (showp[i][t] > max_v)
          max_v = showp[i][t];
        if (showp[i][t] < min_v)
          min_v = showp[i][t];
      }
 
mexprintf("Maximum is %f,   Minimum is %f\n", max_v, min_v);
 
   for (i = 0; i < M; i++)
     for (t = 0; t < STEPS; t++)
       fprintf(outfile, "%f ", (show[i][t]-min_v)/(max_v-min_v));
   fclose(outfile); 
 
   /*
   outfile = fopen("Speech", "w");
   for (i = 0; i < Ms; i++)
     for (t = 0; t < STEPS; t++)
       fprintf(outfile, "%f ", (shows[i][t]-min_v)/(max_v-min_v));
   fclose(outfile); 
 
   outfile = fopen("Phone", "w");
   for (i = 0; i < Mp; i++)
     for (t = 0; t < STEPS; t++)
       fprintf(outfile, "%f ", (showp[i][t]-min_v)/(max_v-min_v));
   fclose(outfile); 
   */
   fclose(out);
void mexFunction(int nlhs, mxArray *plhs[],
        int nrhs, const mxArray *prhs[])
{
 
    inputs();
    connections();
    initiate();
    evaluate();
    store();
}
 
float rnd() /* returning a value in (0, 1) */
{
   return(rand()/(MAXVAL - 1.0));
}
 
float lateral(i,j) /* determine lateral connections */
  int i, j;
{
  int k;
  float temp1 = 0.0, temp2 = 0.0, base = 0.05;
 
  for (k = 0; k < N1; k++)
    if (k != i && ext2[k][j] != ext2[i][j] && branch[k][j] && ext[i][j] > 0) {
      if (W[i][j][k] > base)
	temp1 = We;
      else if (W[i][j][k] < -base)
	temp2 = Wi;
    }
  if (temp2 < -base)
    return(Wi);
  else if (temp1 > base)
    return(We);
  else return(0.0);
}
 
float getxx(y,br) /* br: branch */
  float y;
  int br;
{
  float temp, cat;
 
  /* solving cubic equation */
  cat = -0.5*(y-2.0);
  if (y > 0.0 && y < 4.0) {
    temp = acos(cat);
    if (br)
      return(2*cos(temp/3.0));
    else
      return(2*cos(temp/3.0+0.66*3.1416));
  } else {
    temp = 0.5*sqrt(y*y-4.0*y);
    if (cat - temp > 0.0)
      return(pow(cat+temp,0.333) + pow(cat-temp,0.333));
    else if (cat + temp > 0.0)
      return(pow(cat+temp,0.333) - pow(-cat+temp,0.333));
    else
      return(-pow(-cat-temp,0.333) - pow(-cat+temp,0.333));
  }
}  
 
float getx(y,br) /* piecewise linear version */
  float y;
  int br;
{
  if (y > 0.0 && y < 4.0) {
    if (br)
      return(-0.25*y+2.0);
    else
      return(-0.25*y-1.0);
  } else {
    if (y > 0.0)
      return(-0.25*y-1.0);
    else
      return(-0.25*y+2.0);
  }
}

l'erreur Matlab:

Code:

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mex group.c
Warning group.c: 227  local `float angle' is not referenced 
Warning group.c: 323  missing return value 
Warning group.c: 442  local `int num' is not referenced 
Warning group.c: 441  local `float cat' is not referenced 
Warning group.c: 441  local `float angle' is not referenced 
Warning group.c: 441  local `float xval' is not referenced 
Warning group.c: 441  local `float current' is not referenced 
Error group.c: 611  illegal statement termination 
Error group.c: 611  skipping `void' 
Error group.c: 611  illegal expression 
Error group.c: 611  syntax error; found `nlhs' expecting `)' 
Error group.c: 611  insufficient number of arguments to `mexFunction' 
Error group.c: 611  syntax error; found `nlhs' expecting `;' 
Error group.c: 611  undeclared identifier `nlhs' 
Error group.c: 611  illegal use of type name `mxArray' 
Error group.c: 611  undeclared identifier `plhs' 
Error group.c: 611  illegal expression 
Error group.c: 612  illegal expression 
Error group.c: 612  syntax error; found `nrhs' expecting `]' 
Error group.c: 612  type error: pointer expected 
Error group.c: 612  operands of * have illegal types `incomplete struct mxArray_tag defined at C:\PROGRA~1\MATLAB\R2010A\extern\include\matrix.h 293' and `int' 
Warning group.c: 612  reference to `incomplete struct mxArray_tag defined at C:\PROGRA~1\MATLAB\R2010A\extern\include\matrix.h 293' elided 
Warning group.c: 612  Statement has no effect 
Error group.c: 612  syntax error; found `nrhs' expecting `;' 
Error group.c: 612  undeclared identifier `nrhs' 
Error group.c: 612  illegal expression 
Warning group.c: 612  Statement has no effect 
Error group.c: 612  syntax error; found `mxArray' expecting `;' 
Error group.c: 612  illegal use of type name `mxArray' 
Error group.c: 612  undeclared identifier `prhs' 
Error group.c: 612  too many errors 
 
  C:\PROGRA~1\MATLAB\R2010A\BIN\MEX.PL: Error: Compile of 'group.c' failed. 
 
??? Error using ==> mex at 222
Unable to complete successfully.
 
>> mex group.c
Warning group.c: 227  local `float angle' is not referenced 
Warning group.c: 323  missing return value 
Warning group.c: 442  local `int num' is not referenced 
Warning group.c: 441  local `float cat' is not referenced 
Warning group.c: 441  local `float angle' is not referenced 
Warning group.c: 441  local `float xval' is not referenced 
Warning group.c: 441  local `float current' is not referenced 
Error group.c: 611  illegal statement termination 
Error group.c: 611  skipping `void' 
Error group.c: 611  illegal expression 
Error group.c: 611  syntax error; found `nlhs' expecting `)' 
Error group.c: 611  insufficient number of arguments to `mexFunction' 
Error group.c: 611  syntax error; found `nlhs' expecting `;' 
Error group.c: 611  undeclared identifier `nlhs' 
Error group.c: 611  illegal use of type name `mxArray' 
Error group.c: 611  undeclared identifier `plhs' 
Error group.c: 611  illegal expression 
Error group.c: 612  illegal expression 
Error group.c: 612  syntax error; found `nrhs' expecting `]' 
Error group.c: 612  type error: pointer expected 
Error group.c: 612  operands of * have illegal types `incomplete struct mxArray_tag defined at C:\PROGRA~1\MATLAB\R2010A\extern\include\matrix.h 293' and `int' 
Warning group.c: 612  reference to `incomplete struct mxArray_tag defined at C:\PROGRA~1\MATLAB\R2010A\extern\include\matrix.h 293' elided 
Warning group.c: 612  Statement has no effect 
Error group.c: 612  syntax error; found `nrhs' expecting `;' 
Error group.c: 612  undeclared identifier `nrhs' 
Error group.c: 612  illegal expression 
Warning group.c: 612  Statement has no effect 
Error group.c: 612  syntax error; found `mxArray' expecting `;' 
Error group.c: 612  illegal use of type name `mxArray' 
Error group.c: 612  undeclared identifier `prhs' 
Error group.c: 612  too many errors 
 
  C:\PROGRA~1\MATLAB\R2010A\BIN\MEX.PL: Error: Compile of 'group.c' failed.

27/05/2014, 12h16
Jerome Briot
L'information se trouve dans le message d'erreur :
```
Error group.c: 611  illegal statement termination 
```
Il manque une accolade fermante } juste avant la ligne 611 du fichier group.c

D'autre part, il faut impérativement un P majuscule à mexPrintf
31/05/2014, 11h42
zied113

C'est bon Merci : )