Description
Code Sample, a copy-pastable example if possible
import os
import urllib.request
import xarray as xr
import matplotlib.pyplot as plt
# Download the file from rasterio's repository
url = 'https://github.com/mapbox/rasterio/raw/master/tests/data/RGB.byte.tif'
urllib.request.urlretrieve(url, 'RGB.byte.tif')
# Read the data
da = xr.open_rasterio('RGB.byte.tif')
f, (ax1, ax2) = plt.subplots(1, 2, figsize=(9, 4))
da.plot.imshow(ax=ax1)
(da / 255).plot.imshow(ax=ax2)
plt.tight_layout()
plt.show()
# Delete the file
os.remove('RGB.byte.tif')
Problem description
In #1796, @Zac-HD added support for RGBA images. If an alpha channel is not found, it is added (code)
The problem is that adding this alpha channel requires the images to be normalized to 0-1, while plotting an image in 0-255 range without alpha channel works fine in matplotlib. Removing https://github.com/pydata/xarray/blob/master/xarray/plot/plot.py#L708-L715 would solve the problem, but I guess it was added for a reason.
@Zac-HD , thoughts?