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Heatmap palette

Posted By Lennart Bossér 8 Years Ago

Heatmap palette

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Lennart Bossér
Problem Posted 8 Years Ago
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Last Active: 8 Years Ago
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Hello,

How many colors can be handled with m_heatmap.Palette.AutoPaletteColors?

It seems to me that about the 8 first colours are used regardless of the size of the palette.
See excerpt of code below



   private byte[,] swecadecol = {{0, 0, 102},   {0, 0, 119},   {0, 0, 136},   {0, 0, 153},   {0, 0, 170},
             {0, 0, 187},   {0, 0, 204},   {0, 0, 221},   {0, 0, 238},   {0, 38, 225},
             {0, 60, 200},  {0, 137, 221}, {0, 135, 219}, {0, 181, 205}, {0, 223, 120},
             {0, 255, 128}, {0, 255, 45},  {84, 255, 84}, {85, 255, 85}, {119, 255, 119},
             {151, 255, 129}, {136, 255, 136}, {153, 255, 153}, {187, 255, 187}, {221, 255, 221},
             {255, 255, 255}, {255, 255, 187}, {255, 255, 153}, {255, 255, 119}, {255, 255, 85},
             {255, 255, 51},  {255, 255, 17},  {243, 240, 0}, {245, 243, 0}, {239, 197, 158},
             {234, 179, 128}, {228, 159, 97},  {223, 140, 66},  {255, 119, 119}, {255, 85, 85},
             {255, 68, 68}, {255, 34, 34}, {255, 17, 17}, {238, 0, 0},   {221, 0, 0},
             {187, 0, 0},   {170, 0, 0},   {136, 0, 0},   {102, 0, 0},   {68, 0, 0},
             {51, 0, 0}};
   private NHeatMapSeries m_heatmap = new NHeatMapSeries();
   m_heatmap.Palette.SmoothPalette = true;
   NArgbColorValue[] newcolors = new NArgbColorValue[51];
   for (int i = 0; i < 51; i++)
   {
      newcolors[i] = new NArgbColorValue(255, swecadecol[i, 0], swecadecol[i, 1], swecadecol[i, 2]);
   }
   m_heatmap.Palette.AutoPaletteColors = newcolors;

    ...



I expected to see the whole range of colours from dark blue via white to dark red.
But I only see dark shades of blue.

best regards,
Lennart






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