On 01-07-2014 21:07, William Hudspeth wrote:
Hello,
I am trying to find a method of converting a raster grid to a polygon
vector that does NOT aggregate adjacent pixels that share the same Z
value. In other words, I would like the output vector to be a grid of
polygons where the number of polygons is equal to the number of pixels
in the source raster file, and where the polygon attribute values
reflect the pixel Z value. The script gdal_polygonize does not seem to
be able to do this. Any other ideas on how this might be accomplished??
Thanks, Bill
Hi, I'm not sure I got what you want do but see if this pseudo-algo works
1- create one mask with 1's at the cells with the values you want to
compute a border off, and 0's for the others
2- compute and dump the 0.5 contour
How to do it? Sorry, I know only a GMT recipe but I'm sure that if this
solves your problem others will tell how to do it with GDAL.
Joaquim
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