Hi,
We are using ThinkGeo to crate Grid Cell Matrix; I attached a sample (which is almost your contour sample).
In the sample I loaded a shape file which is the result of another software contour creation (took around 5 minutes to create).
The problem we have is that, if we want to create contour as good as the other software, we have to increase the column and row to 300*300 (or even more) which will made contour creation very slow.
I think one way to improve the speed is to change the GridDefinition class and it accepts Polygon instead of Rectangle as extent. Cause when you creating contour for an area, most of time there isn't any need to create grid-cell for points out of area.
I’ll be grateful if you help me to improve the speed.
Regards,
Ben
Sample_Isolines.zip (385 KB)