How do I create a Data Variable in an xarray.DataArray? Question: How do I assign data to or create a ‘Data Variable’ in a xarray.DataArray or finally in the nc-file when saving the DataArray? When creating the xarray.DataArray, it simply stores the data as an array but not as a ‘Data Variable’ as one is …
Trouble plotting quivers from netcdf file Question: I am trying to plot wind quivers from a NetCDF file, however, I can only plot one line of quivers, straight across the base map, as seen in the image. The code is below. Thank you very much for any help 🙂 data is here, please replace with …
Xarray clip or mask dataset with another dataset Question: Goal: Replace values of a dataset by NaNs if the values of another, smaller dataset, are non-nan. Context: I have 1 netcdf file (DEM) that covers a large area. I have another netcdf file (BED) that covers a smaller area included in the bigger dataset. I …
Python 3.10.6 – Find the element-wise maxima of overlaid xarray datasets Question: I’m working with gridded data, specifically netcdf data, trying to find the maximum grid point value for overlaying pixels of each netcdf file in a directory, ignoring null values. If you’re familiar with ArcGIS, this is the same as running the maximum function …
xarray mask outside list of coordinates Question: I have an Xarray DataArray with values over rectangular 2D grid, and a list of points (pairs of coordinate values) from an arbitrary subset of that grid contained in a pandas Dataframe. How do I mask out values (i.e. set equal to NaN) in the DataArray whose grid …
Creating netcdf file from csv using xarray with 3d var Question: I’m trying to transform a csv file with year, lat, long and pressure into a 3 dimensional netcdf pressure(time, lat, long). However, my list is with duplicate values ​​as below: year,lon,lat,pressure 1/1/00,79.4939,34.4713,11981569640 1/1/01,79.4939,34.4713,11870476671 1/1/02,79.4939,34.4713,11858633008 1/1/00,77.9513,35.5452,11254617090 1/1/01,77.9513,35.5452,11267424230 1/1/02,77.9513,35.5452,11297377976 1/1/00,77.9295,35.5188,1031160490 I have the same year, lon, …
cleanest way to modify a netcdf entry in xarray using nearest location and given time stamp Question: I want to modify the value of a netcdf array at a given index which is the nearest array entry to my chosen lat/lon coordinate and for a given date. I came up with the following solution using …
Python: how to make temporal projection from a netecdf file? Question: I have created an xarray.Dataset called myData that contains data for the years 1990, 2000 and 2015. The dataset looks like the following: import xarray as xr myData= xr.open_dataset(‘myData.nc’) I would like to have information for every year from 1990 to 2000. I can …
Xarray: slicing latitude longitude using dimension name Question: I am writing a program that will open Meteorological NetCDF data, slice it for a given region and then do some calculations, for example: data =xr.open_dataset(SomeFile) SlicedData = data.sel(lat=slice(max_lat,min_lat), lon=slice(min_lon,max_lon)) ExampleResult = SlicedData.mslp.average(‘lon’) Here follows an example of how ‘data’ might be scrtuctured: <xarray.Dataset> Dimensions: (lon: 144, …
IO backend error in the xarray for netcdf file Question: I am trying to open a .netcdf file using xarray and it is showing this error. I am unable to resolve this error and I have found no such solution to resolve this error. I have tried with different versions of Anaconda and Ubuntu but …
