Discussion :

[Yorel2006]

Salut,

Je me suis mis à Visual Studio C++ (2005) et j'ai quelques soucis.

J'aimerais faire un graphique de type histogramme avec une strin sur l'axe x et certaines valeurs sur l'axe y mais j'éprouve qq prolèmes avec la ligne en rouge :

Quelqu'un peut-il m'aider ?

void CreateGraph( ZedGraphControl ^z1 )
{
// Get a reference to the GraphPane instance in the ZedGraphControl
GraphPane ^myPane = z1->GraphPane;

// Set the titles and axis labels
myPane->Title->Text = L" ";
myPane->XAxis->Title->Text = L" ";
myPane->YAxis->Title->Text = L" ";

System:ouble y = 40;
System:ouble x = 80;
//String str[5] = { "North", "South", "West", "East", "Central" };

BarItem ^myCurve = myPane->AddBar(L"Hist", x, y, Color::Red);

}

[Yorel2006]

J'ai enfin réussi... Il m'aura fallu une demi-journée...

void CreateGraph( ZedGraphControl ^z1 )
{
// Get a reference to the GraphPane instance in the ZedGraphControl
GraphPane ^myPane = z1->GraphPane;

// Set the titles and axis labels
myPane->Title->Text = L" ";
myPane->XAxis->Title->Text = L" ";
myPane->YAxis->Title->Text = L" ";

array<double>^ x = { 1, 2, 3, 4 };
array<double>^ y = { 80, 70, 65, 78, 40 };

BarItem ^myCurve = myPane->AddBar(L"Hist", x, y, Color::White);

myPane->YAxis->Scale->Min = 0;
myPane->YAxis->Scale->Max = 100;
myPane->XAxis->Scale->Min = 0;
myPane->XAxis->Scale->Max = 5;
myPane->YAxis->Scale->MinorStep=10;
myPane->XAxis->Scale->MinorStep= 1;
myPane->YAxis->Scale->MajorStep=10;
myPane->XAxis->Scale->MajorStep= 1;

//myPane->XAxis->IsAxisSegmentVisible=false;
//myPane->XAxis->MinSpace=1;

myCurve->Bar->Border->IsVisible = true;

// Draw the X tics between the labels instead of at the labels
//myPane->XAxis->MajorTic->IsBetweenLabels = false;

// Fill the axis background with a color gradient
myPane->Chart->Fill = gcnew Fill( Color::White, Color::SteelBlue, 45.0f );

//array<string,4>^ str = { "North", "South", "West", "East"};
//myPane->XAxis->Scale->TextLabels-> = //str;
//myPane->XAxis->Type = AxisType::Text;

// disable the legend
myPane->Legend->IsVisible = false;
}