**BREAKING** pygmt.grdcut: Refactor to store output in virtualfiles for grids #3115
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Minimal xarray.DataArray output with data and coordinates, no metadata yet.
weiji14
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Special case `earth_day` to be loaded as GMT_IMAGE rather than GMT_GRID. Need to use `GMT_OUT|GMT_IS_REFERENCE` in virtualfile_out to avoid segfault, xref #3115.
Extra metadata from the _GMT_GRID_HEADER struct.
Reorder the dimensions to follow Channel, Height, Width (CHW) convention. Also added doctest checking output DataArray object and the image's x and y coordinates.
Get the registration and gtype info from the grid header and apply it to the GMT accessor attributes.
Trying to match some of the doctests in _GMT_GRID.
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I think it's better to not introduce last-minute breaking changes, so bump this PR to v0.15.0. |
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This PR applies virtualfiles in
pygmt.grdcut, so that this function doesn't have to write to temporary files (#2730).grdcutis on of the complicated module that it works for grid, image and cube. We have to know thekindof the input before calling theSession.virtualfile_outmethod.It turns out it's not trivial to determine the data
kindof an input file. We have some options:.ncis a grid,.tifis a image)kindparameter (default to"grid") and users should specify thekindparameter.Option 1-2 may not always work; option 3 also dosn't always work (see #3115 (comment)).
This PR currently adopts option 4. Need to note option 4 meaning BREAKING:
grdcut("@earth_day_01d")works; now must usegrdcut("@earth_day_01d", kind="image")