Incorrect slicing

[krishnaap]

Slicing shows incorrect dimensions
imr=ds.sel(longitude=slice(50,100),latitude=slice(0,18))

It is supposed to slice the lat and lon values between 0-18 and 50-100 respectively, But I m getting the following result

imr
Out[165]:
<xarray.Dataset>
Dimensions: (latitude: 0, longitude: 201)

How to resolve this issue?

[keewis]

what is the ordering of your data? Unfortunately, if your data is descending instead of ascending you'll have to change your slice objects:

ds.sel(longitude=slice(50, 100), latitude=slice(18, 0))

[krishnaap]

Wow. That really helps, I didn't know the ordering of the data really matters! Thanks a lot.