Function Demo_Histogram2D

Source/3rdParty/implot/implot_demo.cpp:888–914

//-----------------------------------------------------------------------------

void Demo_Histogram2D() {
    IMGUI_DEMO_MARKER("Plots/Histogram 2D");
    static int count     = 50000;
    static int xybins[2] = {100,100};

    static ImPlotHistogramFlags hist_flags = 0;

    ImGui::SliderInt("Count",&count,100,100000);
    ImGui::SliderInt2("Bins",xybins,1,500);
    ImGui::SameLine();
    ImGui::CheckboxFlags("Density", (unsigned int*)&hist_flags, ImPlotHistogramFlags_Density);

    static NormalDistribution<100000> dist1(1, 2);
    static NormalDistribution<100000> dist2(1, 1);
    double max_count = 0;
    ImPlotAxisFlags flags = ImPlotAxisFlags_AutoFit|ImPlotAxisFlags_Foreground;
    ImPlot::PushColormap("Hot");
    if (ImPlot::BeginPlot("##Hist2D",ImVec2(ImGui::GetContentRegionAvail().x-100-ImGui::GetStyle().ItemSpacing.x,0))) {
        ImPlot::SetupAxes(nullptr, nullptr, flags, flags);
        ImPlot::SetupAxesLimits(-6,6,-6,6);
        max_count = ImPlot::PlotHistogram2D("Hist2D",dist1.Data,dist2.Data,count,xybins[0],xybins[1],ImPlotRect(-6,6,-6,6), {ImPlotProp_Flags, hist_flags});
        ImPlot::EndPlot();
    }
    ImGui::SameLine();
    ImPlot::ColormapScale(hist_flags & ImPlotHistogramFlags_Density ? "Density" : "Count",0,max_count,ImVec2(100,0));
    ImPlot::PopColormap();
}

//-----------------------------------------------------------------------------