Python error when clipping land use rasters
Mayu Mizutani
2025-10-08T14:48:07 WARNING Traceback (most recent call last):
File "C:\Users/mayum/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\hrus.py", line 5975, in getLanduseFile
QSWATUtils.openAndLoadFile(root, FileTypes._LANDUSES,
File "C:\Users/mayum/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATUtils.py", line 879, in openAndLoadFile
layer = QSWATUtils.getLayerByFilename(root.findLayers(), outFileName, ft,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users/mayum/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATUtils.py", line 684, in getLayerByFilename
layer = QSWATUtils.clipLayerToDEM(treeLayers, cast(QgsRasterLayer, layer), fileName, legend, gv)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users/mayum/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATUtils.py", line 587, in clipLayerToDEM
assert os.path.exists(clipName), 'Failed to clip raster {0} to make {1}'.format(fileName, clipName)
^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Failed to clip raster C:/Users/mayum/Documents/working/qgis2/etowah\Watershed\Rasters\Landuse\nlcd_2024_saga.sdat to make C:/Users/mayum/Documents/working/qgis2/etowah\Watershed\Rasters\Landuse\nlcd_2024_saga_clip.tif
with this messages in Process window:
2025-10-08T14:48:07 INFO gdal_translate -a_nodata 250.0 -of GTiff -srcwin 16073 5469 -8864 -7 C:/Users/mayum/Documents/working/qgis2/etowah\Watershed\Rasters\Landuse\nlcd_2024_saga.sdat C:/Users/mayum/Documents/working/qgis2/etowah\Watershed\Rasters\Landuse\nlcd_2024_saga_clip.tif
2025-10-08T14:48:07 INFO GDAL command:
2025-10-08T14:48:07 INFO gdal_translate -a_nodata 250.0 -of GTiff -srcwin 16073 5469 -8864 -7 C:/Users/mayum/Documents/working/qgis2/etowah\Watershed\Rasters\Landuse\nlcd_2024_saga.sdat C:/Users/mayum/Documents/working/qgis2/etowah\Watershed\Rasters\Landuse\nlcd_2024_saga_clip.tif
2025-10-08T14:48:07 INFO GDAL command output:
2025-10-08T14:48:07 CRITICAL Process returned error code 1
2025-10-08T14:48:07 INFO Results: {'OUTPUT': 'C:/Users/mayum/Documents/working/qgis2/etowah\\Watershed\\Rasters\\Landuse\\nlcd_2024_saga_clip.tif'}
2025-10-08T14:48:07 CRITICAL ERROR 1: Error: -srcwin 16073 5469 -8864 -7 has negative width and/or height.
2025-10-08T14:48:07 INFO Input file size is 24888, 13703
Nancy B. Sammons
Mayu:
You should post this on the SWAT+ and/or QSWAT+ Google group so the developer can review it.
Nancy
From: swat...@googlegroups.com <swat...@googlegroups.com>
On Behalf Of Mayu Mizutani
Sent: Wednesday, October 8, 2025 1:55 PM
To: SWAT-user <swat...@googlegroups.com>
Subject: [SWAT-user:13268] Python error when clipping land use rasters
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Chris George
file instead of reprojecting it properly.
Try clicking on Zoom Full in QGIS and you will see your project separate.
You do not need to clip landuse or soil rasters: QSWAT will do that for
you if they are much bigger than the DEM.
Chris
On 10/8/2025 7:54 PM, Mayu Mizutani wrote:
> Hello, I am having trouble using my land use raster when creating the
> HRUs in qSWAT+. It is the NLCD layer that I have obtained from the MRLC
> as a GeoTIFF and converted into a .sdat file. These are the messages I
> get: 2025-10-08T14: 48: 07
> This Message Is From an External Sender
> This message came from outside your organization.
> ZjQcmQRYFpfptBannerEnd
>
> 2025-10-08T14:48:07 INFO GDAL command output:
>
> 2025-10-08T14:48:07 CRITICAL Process returned error code 1
>
> 2025-10-08T14:48:07 INFO Results: {'OUTPUT': 'C:/Users/mayum/
> Documents/working/qgis2/etowah\\Watershed\\Rasters\\Landuse\
> \nlcd_2024_saga_clip.tif'}
>
> 2025-10-08T14:48:07 CRITICAL ERROR 1: Error: -srcwin 16073 5469
> -8864 -7 has negative width and/or height.
>
> 2025-10-08T14:48:07 INFO Input file size is 24888, 13703
>
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