Added tileLevelMin/Max and colormap details to STAC xcube:data_vars #940
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…C xcube:data_vars
forman
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Mar 6, 2024
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Hi @edd3x, thanks for the PR. The extension to data variables is very useful and code looks good!
In fact, we plan to deprecate the /datasets endpoint and use only STAC. Then, I'm sure we'll need to enrich the data variable object by even more information. To be compatible with such an extension, we might put the extra information into a dedicated object, either as an object in attrs or as new own property extra or similar. We'll let you know here asap. Stay tuned and thanks!
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Hey @edd3x, FYI, we haven't started the activity yet, but it is still on the roadmap for spring 2024. |
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[Description of PR]
Currently, our web visualisation development team have been using the
/datasetsendpoint from the xcube server API which providestileLevelMin,tileLevelMax,colorBarName,colorBarMaxandcolorBarMinper data variable as part of the JSON output. We are however changing toows.stacvia the/ogcendpoint because it's faster, but the STAC JSON output does not provide the above-listed attributes.What I have done here is to use the
DatasetsContextto derive the tiling scheme and get the colormap details usingderive_tiling_scheme()andget_color_mapping()inxcube/webapi/ows/stac/controllers.pyso thexcube:data_varsin the STAC item JSON output will return the additional variables liketileLevelMin,tileLevelMax,colorBarName,colorBarMaxandcolorBarMin.I created a new method
_get_xc_data_variablesand_get_xc_data_variableto return thexcube:data_vars.Checklist:
xcube/webapi/ows/stac/controllers.pyCHANGES.md