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geocat.comp.spherical.scale_voronoi

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geocat.comp.spherical.scale_voronoi#

geocat.comp.spherical.scale_voronoi(theta, phi, chunk_size='auto')#

Calculate the area weighting for dataset.

Parameters:

  • theta (numpy.ndarray, xarray.DataArray) – 2-dimensional array containing the theta (longitude in radians) values for each datapoint in data.

  • phi (numpy.ndarray, xarray.DataArray) – 2-dimensional array containing the theta (latitude in radians) values for each datapoint in data. Phi is zero at the top of the sphere and pi at the bottom, phi = (lat_degrees-90)*(-1)*pi/180

  • chunk_size (int, optional) – The size of each edge of the dask chunks if using xarray.DataArray inputs. Some arrays will be 2d, and others 1d, and the final calculation operates on a 3d array. thus the chunks used in the largest calculation scale at chunk_size^3 A chunk size of 256 is recommended. Defaults to ‘auto’

Returns:

scale (numpy.ndarray, xarray.DataArray) – 2-dimensional array containing the area of the spherical voronoi cell for each theta and phi pair.

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