Hello,
I have a one-and-a-half gigabyte ermapper .ers file, that has one band, with values of 0 to 7 (integers only).
I would like to turn this into vector polygons, such as a shapefile or mapinfo table.
Can I do this with GDAL?
Kind regards,
Nicholas Lawrence
Senior Spatial Sci
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
Nicholas,
You can use the gdal_polygonize.py script [1] to do this. You might also
want to go through the documentation for GDALPolygonize() function[2]. If
your raster is non-thematic, your vector dataset could get too big. ESRI
Shapefile format has a file size limit of 4GB.
[1]: http://www.gdal
Le mardi 01 juillet 2014 22:07:36, William Hudspeth a écrit :
> 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
ould 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.
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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 pol
