Creating and modifying new netcdf based on initial netcdf using xarray

Question

I have an xarray dataset with foll. structure:

<xarray.Dataset>
Dimensions:           (N: 5, latitude: 360, longitude: 720, time: 27)
Coordinates:
  * latitude          (latitude) float64 89.75 89.25 88.75 88.25 87.75 87.25 ...
  * longitude         (longitude) float64 -179.8 -179.2 -178.8 -178.2 -177.8 ...
  * time              (time) float64 0.0 1.826e+03 3.652e+03 5.479e+03 ...
  * N                 (N) |S1 '1' '2' '3' '4' '5'

I want to copy a handle to this dataset and remove the coordinated named 'N'.

When I do this:

new_nc = hndl_nc.copy() 
new_nc.drop('N')

Subsequently, when I try to assign data to new variable in new_nc, it does not work:

new_nc['new_var'] = ...

How do I fix this?

shoyer · Accepted Answer · 2017-01-25 02:16:04Z

1

drop, like most xarray methods, returns a new xarray object rather than modifying the orginal object in-place. So instead you should write new_nc = hdnl_nc.drop('N').

Alternatively, you could Python's del keyword: del new_nc['N']

answered Jan 25, 2017 at 2:16

shoyer

9,6831 gold badge41 silver badges57 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Creating and modifying new netcdf based on initial netcdf using xarray

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related