topic Re: Increase raster resolution in Geoprocessing Questions

Increase raster resolution

JonPeroff — Wed, 05 Apr 2017 21:55:22 GMT

I have a raster layer where each pixel is 10 meters. I would like to reduce the pixel size to 5 meters. I have not had any success finding the right tool (if there is one). I have converted the 10 meter raster to a point feature and tried to re-convert it at a 5 meter cell size but that just left voided areas. Maybe I'm missing a step? I have spatial and 3D analyst tools. Can someone point me in the right direction?

Re: Increase raster resolution

DanPatterson_Retired — Wed, 05 Apr 2017 22:01:49 GMT

Resample read carefully

Re: Increase raster resolution

curtvprice — Thu, 06 Apr 2017 02:14:09 GMT

If you are upsampling, for example, from 5 meter to 10 meter, the tool of choice is Aggregate. Unless of course you want to do it in numpy, Dan!

Just thought I'd add that to the thread.

Re: Increase raster resolution

DanPatterson_Retired — Sat, 11 Dec 2021 15:21:50 GMT

Avoid the aggrevation of Aggregation using Numpy .... from this blog post

and to avoid repeating myself... and just halve the cell size when bringing back into arcmap

a

array([[0, 1, 2],
       [3, 4, 5],
       [6, 7, 8]])

np.repeat(np.repeat(a, 2, axis=0), 2, axis=1)

array([[0, 0, 1, 1, 2, 2],
       [0, 0, 1, 1, 2, 2],
       [3, 3, 4, 4, 5, 5],
       [3, 3, 4, 4, 5, 5],
       [6, 6, 7, 7, 8, 8],
       [6, 6, 7, 7, 8, 8]])
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Increase raster resolution

JonPeroff — Thu, 06 Apr 2017 12:35:26 GMT

Thanks. This is it