# NonUniformHeatmapDataSeries axis array counts not matching with dimensions

### Welcome to the SciChart Forums!

• Some reputation is required to post answers. Get up-voted to avoid the spam filter!
• We welcome community answers and upvotes. Every Q&A improves SciChart for everyone
0
0

I was looking at the example given at this link for NonUniformHeatmapDataSeries in SciChart. In this example, the width and height of heatmap is given as h=4 and w=7. As I understand h is for Y axis and w is for X axis and data[,] is for Z axis. However, the counts in actual data filled for these axis are not matching wight h and w.

``````var xRangeMapping = new int[] { 0, 10, 20, 26, 36, 60, 72, 84 };   // 8 points for w
var yRangeMapping = new int[] { 100, 250, 390, 410, 600 };         // 5 points for h
``````

What is the purpose of extra points added at first place (0 and 100)? Are these required to set the starting point for both axis?

Here is the code given at above link:

``````int w = 7, h = 4;
var data = new double[h, w];
double maxValue = double.MinValue;
for (int x = 0; x < w; x++)
for (int y = 0; y < h; y++)
{
data[y, x] = 3.5 * ((h - y) * (w - x));
maxValue = Math.Max(maxValue, data[y,x]);
}
var xRangeMapping = new int[] { 0, 10, 20, 26, 36, 60, 72, 84 };
var yRangeMapping = new int[] { 100, 250, 390, 410, 600 };
var heatmapDataSeries = NonUniformHeatmapDataSeries<int, int, double>(data, i => xRangeMapping[i], i => yRangeMapping[i]);

// Apply the Heatmap DataSeries to a FastNonUniformheatmapRenderableSeries
var heatmapRenderableSeries = new FastUniformHeatmapRenderableSeries()
{
ColorMap = new HeatmapColorPalette()
{
Maximum = maxValue,
Minimum = 0,
}
};
``````
Version
5.1.0.11299
• Thanks for the explanation. I got the idea.. Need one more clarification here.. Is that starting point (0 in this case) required only at the beginning position? Can I instead add ending point which is incremental to last point.. say 90 (after 84) ?? Will it do the mapping correctly?
• You must to post comments
1
0

Hi Anil,