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Detrend xarray DataArrays using polyfit
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| import xarray as xr | |
| def detrend_dim(da, dim, deg=1): | |
| # detrend along a single dimension | |
| p = da.polyfit(dim=dim, deg=deg) | |
| fit = xr.polyval(dim, p.polyfit_coefficients) | |
| return da - fit | |
| def detrend(da, dims, deg=1): | |
| # detrend along multiple dimensions | |
| # only valid for linear detrending (deg=1) | |
| da_detrended = da | |
| for dim in dims: | |
| da_detrended = detrend_dim(da_detrended, dim, deg=deg) | |
| return da_detrended |
Hi, how to apply this function to xarray dataset?
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Hello!!!
I would like to know how to adjust the polynomial to remove the non-linear trend using xarray... Does anyone have any suggestions? I'm new to python
Thanks!