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Questions - python-xarray

xarray interp variable with two dimensional gird into one point

I have a dataset with two-dimension lon/lat and I want to calculate the value of one certain point. The ncfile can be download from ftp://ftp.awi.de/sea_ice/product/cryosat2_smos/v204/nh/LATEST/ and t...
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Yongwu Xiu

python

interpolation

python-xarray

spatial-interpolation

Votes: 0

Answers: 1

Latest Answer

Don't think you can use ds.analysis_sea_ice_thickness.sel(lat=80.0, lon=100.0, method = "nearest") directly, because lat and lon are not dimensions (see ds.dims), but coordinates (ds.coords)...
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Bert Coerver

Xarray select dataarray according to an non-dimension coordinate

I want to select a Dataarray according to a criteria from a non-dimension coordinate. In the example below, I have my coords 'sat' which depend on the coord 'time', which is exactly what I need. When ...
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FarAway21

python

python-xarray

data-cube

Votes: 0

Answers: 1

Latest Answer

Finally, found the elegant enough answer in an old issue on xarray github: ds.sel(time = ds.sat == 'L30') Notes: ds = the DataArray (or Dataset) time : because my sat coordinate is linked to the time ...
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FarAway21

Fastest way to slice and download hundreds of NetCDF files from THREDDS/OPeNDap server

I am working with NASA-NEX-GDDP CMIP6 data. I currently have working code that individually opens and slices each file, however it takes days to download one variable for all model outputs and scenari...
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Clim Sci

geospatial

python-xarray

netcdf4

opendap

Votes: 0

Answers: 1

Latest Answer

One way is to download via the ncss portal instead of the OpenDAP, available via NASA. The URL is different but it is iterative as well. e.g. lat = 53 lon = 0 URL = "https://ds.nccs.nasa.gov/...
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torchern

Calculate linear trend in each grid cell

I have an xarray dataset of the dimensions time=350, xc=432, yc=432 that contains data on sea ice concentration (variable ice_conc). I want to calculate the linear trend in each grid cell and create a...
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Sofie1994

python

grid

linear-regression

python-xarray

Votes: 0

Answers: 1

Latest Answer

If you have a xarray.Dataset already, you could simply use xarray.Dataset.polyfit! import xarray as xr import numpy as np import matplotlib.pyplot as plt # Create some example data. tsize = 10 xsize ...
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Bert Coerver

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