Bonjour à tous,

J'aimerais représenter un tableau de donné à l'aide de la fonction 'image' mais lorsque je l'utilise elle marque "'z' must be numeric or logical"

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matrice <- matrix(c(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p), nrow=16, ncol=40, byrow=T)
x <- seq(1,40,by=1)
y <- seq(1,16,by=0.5)
 
matrice
 
      [,1]      [,2]      [,3]      [,4]      [,5]      [,6]      [,7]     
 [1,] 1.158748  1.075495  1.0503    0.8805849 0.7390549 0.666419  0.5743042
 [2,] 1.166038  1.077611  1.049275  0.876693  0.7370172 0.663933  0.5748731
 [3,] 1.16561   1.076787  1.04854   0.8770506 0.7371931 0.6597025 0.5741795
 [4,] 1.172965  1.075019  1.04849   0.873204  0.7347158 0.6618326 0.5692732
 [5,] 1.169817  1.071721  1.046829  0.8695267 0.7322933 0.6636232 0.5677626
 [6,] 1.169439  1.068273  1.043604  0.865406  0.72893   0.645958  0.3276777
 [7,] 1.170498  1.064832  1.037336  0.4592431 0.3860453 0         0        
 [8,] 1.160488  1.061267  0.4127052 0         0         0         0        
 [9,] 0.4137457 0.4228666 0         0         0         0         0        
[10,] 0         0         0         0         0         0         0        
[11,] 0         0         0         0         0         0         0        
[12,] 0         0         0         0         0         0         0        
[13,] 0         0         0         0         0         0         0        
[14,] 0         0         0         0         0         0         0        
[15,] 0         0         0         0         0         0         0        
[16,] 0         0         0         0         0         0         0        
      [,8]      [,9]      [,10]     [,11]     [,12]     [,13]     [,14]    
 [1,] 0.4989209 0.4498075 0.4257737 0.4019125 0.3679702 0.3241407 0.2816632
 [2,] 0.4976937 0.4486578 0.424874  0.4006728 0.3678062 0.3211398 0.2808845
 [3,] 0.4968253 0.4480739 0.423532  0.399281  0.3678541 0.3175184 0.279647 
 [4,] 0.4979849 0.4466266 0.4216062 0.3966054 0.3682573 0.1958304 0.1385068
 [5,] 0.494998  0.4433623 0.2277588 0.2624667 0.1904835 0         0        
 [6,] 0.482387  0.2343878 0         0         0         0         0        
 [7,] 0         0         0         0         0         0         0        
 [8,] 0         0         0         0         0         0         0        
 [9,] 0         0         0         0         0         0         0        
[10,] 0         0         0         0         0         0         0        
[11,] 0         0         0         0         0         0         0        
[12,] 0         0         0         0         0         0         0        
[13,] 0         0         0         0         0         0         0        
[14,] 0         0         0         0         0         0         0        
[15,] 0         0         0         0         0         0         0        
[16,] 0         0         0         0         0         0         0        
      [,15]     [,16]     [,17]     [,18]     [,19]     [,20]     [,21]    
 [1,] 0.2253214 0.2223927 0.2159942 0.3696735 0.3535526 0.3770994 0.427514 
 [2,] 0.2241564 0.2206703 0.2158978 0.3605853 0.3508808 0.3752627 0.418119 
 [3,] 0.2239195 0.2188767 0.2162757 0.3539264 0.3464307 0.3760323 0.4081512
 [4,] 0.224525  0.2156721 0.2193923 0.3479833 0.3445576 0.3766201 0.4200635
 [5,] 0.2202203 0.2135723 0.2186322 0.3456218 0.339489  0.3623013 0.3964102
 [6,] 0.2166962 0.214559  0.2167881 0.339583  0.3433626 0.3529425 0.3938021
 [7,] 0.2148814 0.2131447 0.216594  0.3187473 0.3365019 0.3516895 0.3920482
 [8,] 0.2137288 0.2114257 0.2160812 0.3082958 0.3312649 0.352005  0.3887172
 [9,] 0.1694957 0.2097263 0.2151504 0.3088704 0.3210641 0.3531993 0.3861658
[10,] 0.048977  0.2099283 0.2152826 0.3081805 0.3221723 0.3519316 0.3809735
[11,] 0         0.2078693 0.2154912 0.3064124 0.3232734 0.3484458 0.3822168
[12,] 0         0.1540001 0.2158635 0.306443  0.3201846 0.3445489 0.384625 
[13,] 0         0         0.2137896 0.304973  0.3163292 0.3437044 0.3791882
[14,] 0         0         0.1565036 0.2989344 0.31275   0.3430293 0.3642998
[15,] 0         0         0         0.0890098 0.261075  0.3424656 0.3599458
[16,] 0         0         0         0         0.1188778 0.1619698 0.1773123
      [,22]     [,23]     [,24]     [,25]     [,26]     [,27]     [,28]    
 [1,] 0.584581  0.7576953 0.940978  0.8670154 1.224914  1.268508  1.384544 
 [2,] 0.5822705 0.7559614 0.9418429 0.8731242 1.226609  1.223789  1.36826  
 [3,] 0.5814253 0.765166  0.936379  0.8995783 1.223584  1.230145  1.35681  
 [4,] 0.5902992 0.7737548 0.9294958 0.8891315 1.220284  1.216385  1.335768 
 [5,] 0.5877477 0.7736035 0.9364807 0.913251  1.181903  1.176216  1.271354 
 [6,] 0.5756858 0.7459877 0.9034427 0.9275462 1.069076  1.14813   1.269098 
 [7,] 0.5459    0.7430388 0.8733993 0.9431378 1.025407  1.114064  1.243168 
 [8,] 0.50647   0.731854  0.875237  0.9557635 0.979848  1.115685  1.222095 
 [9,] 0.4801853 0.7465931 0.8615538 0.9487073 0.9590327 1.069688  1.217767 
[10,] 0.4684844 0.695443  0.831832  0.9321138 0.9480713 1.075092  1.210386 
[11,] 0.4491316 0.659211  0.8286096 0.8971413 0.9173753 1.049745  1.202775 
[12,] 0.4280133 0.6483343 0.8143266 0.9014257 0.905246  1.026866  1.182519 
[13,] 0.3819958 0.6096983 0.7954342 0.8743164 0.8923798 1.010238  1.165322 
[14,] 0.356302  0.575242  0.7813578 0.8610112 0.876663  0.9855727 1.143257 
[15,] 0.36248   0.5716818 0.7674608 0.8056346 0.8551936 0.9527293 1.120073 
[16,] 0.2471225 0.2476618 0.4206254 0.4105233 0.5028863 0.3126044 0.7272203
      [,29]     [,30]     [,31]    [,32]    [,33]     [,34]     [,35]    
 [1,] 1.606661  1.643539  1.69516  1.85443  1.893257  2.063447  2.097566 
 [2,] 1.576158  1.585557  1.671695 1.854651 1.861381  2.06018   2.068461 
 [3,] 1.546786  1.511351  1.621358 1.854548 1.821316  2.056329  2.054527 
 [4,] 1.524868  1.504586  1.592154 1.853659 1.800099  2.035254  2.043555 
 [5,] 1.520222  1.485188  1.604169 1.854202 1.793191  2.005962  1.992782 
 [6,] 1.511693  1.44251   1.582542 1.853934 1.784746  1.985472  1.745335 
 [7,] 1.471611  1.404619  1.533571 1.8445   1.765371  1.884914  1.527506 
 [8,] 1.450918  1.358258  1.51388  1.775016 1.743656  1.779758  1.432453 
 [9,] 1.418357  1.343104  1.497807 1.690701 1.700183  1.597774  1.373822 
[10,] 1.332932  1.346109  1.45639  1.581397 1.653488  1.479172  1.315221 
[11,] 1.300669  1.342724  1.418714 1.497947 1.592286  1.3703    1.228303 
[12,] 1.276554  1.340794  1.391703 1.398662 1.485054  1.235311  1.182222 
[13,] 1.260299  1.331943  1.365162 1.329853 1.41454   1.180008  1.146665 
[14,] 1.24183   1.317193  1.313035 1.309283 1.345054  1.158123  0.2881915
[15,] 1.186724  1.243897  1.240442 0.629869 0.7691961 0.5468177 0        
[16,] 0.9713064 0.8398703 0.713976 0        0         0         0        
      [,36]     [,37]     [,38]    [,39]     [,40]   
 [1,] 2.162835  2.173401  1.995667 1.802789  1.22591 
 [2,] 2.14502   2.14509   1.855443 1.638961  1.227097
 [3,] 2.13561   2.086162  1.865973 1.393984  1.2236  
 [4,] 2.084919  1.90031   1.722813 1.337071  1.207637
 [5,] 1.793616  1.76527   1.483033 1.279656  1.20542 
 [6,] 1.629275  1.653405  1.386176 1.270307  1.198821
 [7,] 1.599147  1.479785  1.356051 1.21639   1.178368
 [8,] 1.485439  1.38317   1.347551 1.198865  1.17476 
 [9,] 1.408733  1.382883  1.282295 1.223974  1.181557
[10,] 1.376613  1.370825  1.302643 1.260688  1.172652
[11,] 1.3458    1.347616  1.189045 0.5631618 1.048156
[12,] 1.288196  1.295697  0.279731 0         0       
[13,] 1.216111  0.8671347 0        0         0       
[14,] 0.3648832 0         0        0         0       
[15,] 0         0         0        0         0       
[16,] 0         0         0        0         0
Les a,b,c,d,e,f... représentent chacune des lignes...

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image(x,y,matrice)
Error in image.default(x, y, matrice) : 'z' must be numeric or logical
Si quelqu'un a une solution, je suis preneur

Vous pouvez même proposer une autre fonction que 'image' si vous voulez.

Merci par avance !