The following code should display only the second slice (z=1) of a reconstruction stack, but it gives an error
import holopy as hp
holo = hp.core.io.get_example_data('image0001')
recon = hp.propagate(holo, [0, 1])
one_slice = recon.sel(z=1)
hp.show(one_slice)
The code works when replacing the second last line with one_slice = recon.sel(z=[1]) (note z is a list).
The problem is that xr.DataArray.sel() keeps z as a coord but not a dim. Line 228 of hp/core/io/vis.py checks if z is an attribute and then tries to take its length but this fails here since it's just a single value. That line of code should probably check if 'z' is in im.dims instead of the hasattr. We should also add a test.
The following code should display only the second slice (z=1) of a reconstruction stack, but it gives an error
The code works when replacing the second last line with
one_slice = recon.sel(z=[1])(note z is a list).The problem is that
xr.DataArray.sel()keeps z as a coord but not a dim. Line 228 of hp/core/io/vis.py checks if z is an attribute and then tries to take its length but this fails here since it's just a single value. That line of code should probably check if 'z' is in im.dims instead of the hasattr. We should also add a test.