Anomaly CA_VariantSet2DArray

With CVI version 8.0.1 and calling the following before plot a 3D graph:

int rowSize = 41;
columnSize int = 65;
Double bMatrix [200] [200];

CA_VariantSet2DArray (& bVariant, CAVT_DOUBLE, rowSize, columnSize, & bMatrix);

If I declare bMatrix [200] [65], everything works fine.
If I declare bMatrix [200] [200] the plot is totally false.

Is there a reason that the second bMatrix dim must be declared to the size of the data, while the first dim does not work?

The goal is to pass data of different sizes to CA_VariantSet2DArray() 2D.

Using CW3DGraphLib_CWPlot3DPlot3DSurface to draw the real chart.

Ideas are appreciated,

Scott T.

I think remember that VariantSet2DArray wants to be in a single, continuous block memory. If you use the right value for the second array index, simple lines will be contiguous; If the second dimension is wider that the space you need, the part of the array that contains useful data will be not contiguous, as memory is organized by lines (i.e. bMatrix [0] [0], bMatrix [0] [1]... bMatrix [0] [199], bMatrix [1] [0], bMatrix [1] [1]... bMatrix [1] [199] and so on).

Tags: NI Software

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