Setting to zero in Xarray

Question

I have a variable with multiple dimensions concentration[time,lon, lat], I have found spurios negative concentration values at different times and at different lon and lattitude. I would like to set everything below 0 to zero, using xarray.

Is there straight forward way of accomplishing this?

Thanks!

Answer 1

You can apply numpy and scipy ufuncs, a.k.a. universal functions, which operate element-wise on a whole array, to an xarray object and the result will still be an xarray object. In this case:

da = np.maximum(da, 0)

See the xarray docs on computation for more description.