ValueError: yscale 0.11356327132282978 cannot be less than 1.0

[paulovieira]

Installed gdal2mbtiles in a virtual environment. Tried to use it with this raster from https://www.naturalearthdata.com:

https://www.naturalearthdata.com/downloads/10m-gray-earth/gray-earth-with-shaded-relief-and-water/

Direct link for the raster: https://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/raster/GRAY_LR_SR_W.zip

Got this error:

ValueError: yscale 0.11356327132282978 cannot be less than 1.0

Full output:

(my_env) $ gdal2mbtiles --coloring=gradient --color "0:#fff" GRAY_LR_SR_W.tif GRAY_LR_SR_W.mbtiles
Traceback (most recent call last):
  File "/home/pvieira/my_env/bin/gdal2mbtiles", line 8, in <module>
    sys.exit(main())
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/main.py", line 297, in main
    warp_mbtiles(inputfile=inputfile.name, outputfile=outputfile.name,
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/helpers.py", line 203, in warp_mbtiles
    return image_mbtiles(inputfile=warped, outputfile=outputfile,
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/helpers.py", line 73, in image_mbtiles
    pyramid = preprocessor(**locals())
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/helpers.py", line 322, in resample_after_warp
    pyramid.dataset.resample_to_world()
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/vips.py", line 601, in resample_to_world
    result = self._resample(ratios=ratios)
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/vips.py", line 570, in _resample
    self._image = VImageAdapter(self.image).stretch(
  File "/home/pvieira/my_env/lib/python3.10/site-packages/gdal2mbtiles/vips.py", line 377, in stretch
    raise ValueError(
ValueError: yscale 0.11356327132282978 cannot be less than 1.0

I'm using gdal 3.4.1.

[swen100]

Got the same error, but with own raster-data.

Output:

Traceback (most recent call last):
  File "/usr/local/bin/gdal2mbtiles", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/main.py", line 297, in main
    warp_mbtiles(inputfile=inputfile.name, outputfile=outputfile.name,
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/helpers.py", line 203, in warp_mbtiles
    return image_mbtiles(inputfile=warped, outputfile=outputfile,
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/helpers.py", line 73, in image_mbtiles
    pyramid = preprocessor(**locals())
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/helpers.py", line 322, in resample_after_warp
    pyramid.dataset.resample_to_world()
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/vips.py", line 601, in resample_to_world
    result = self._resample(ratios=ratios)
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/vips.py", line 570, in _resample
    self._image = VImageAdapter(self.image).stretch(
  File "/usr/local/lib/python3.9/dist-packages/gdal2mbtiles/vips.py", line 377, in stretch
    raise ValueError(
ValueError: yscale 0.3478704038449042 cannot be less than 1.0