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Published 20 hours ago • verified publisher icon ecoon

"None" land cover types found

Open pinshuai opened this issue 3 years ago • 4 comments

Hi Ethan,

I am getting "None" in land cover types (i.e., land cover id =0) which should not exist. I have tested this using the Coweeta example, and I only saw the "None" label using the newest WW.

Before: image

After: image

If you look closely, there are only a few pixels along the watershed boundary that have None label.

Anything changed?

Pin

pinshuai avatar Oct 21 '21 23:10 pinshuai

hmm, this is weird, and I see it in the current master as well. Are there actually triangles that are None, or just pixels in the underlying raster? I guess if they're showing up in this image it must be triangles.

Probably this is some level of issue with how the masking is dealt with?

ecoon avatar Nov 20 '21 01:11 ecoon

There are a few triangles that are None.

Did you do any clipping for the landcover raster? I think there is something to do with the source file. I used my previous NLCD landcover file, and there is no None (i.e. 0) label.

pinshuai avatar Nov 24 '21 21:11 pinshuai

Is this still a problem? I haven't seen this show up in a while -- maybe it got fixed?

ecoon avatar Nov 10 '22 15:11 ecoon

The None label came back again in a different watershed I am working on. I noticed that when I switched to NLCD 2019 product, the issue is gone. Perhaps we need to update WW to include options for NLCD 2019?

pinshuai avatar Oct 12 '23 17:10 pinshuai