DOC: Add transformation grid documentation page #628
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| Transformation Grids | ||
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| Transformation grids are necessary when you are performing datum transformations. |
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They are not "necessary" (transformations also work if the grids are not available?), but make the transformation more accurate?
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That is true. I guess it depends on your definition of necessary.
| - Have a machine that can hold and extra 500 MB - 1 GB of data? Then downloading all grids shouldn't be an issue. | ||
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| - Have a machine with limited space, a great network connection, and PROJ 7+? Look into `PROJ network <https://proj.org/usage/network.html>`__ capabilities. | ||
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With PROJ 7, it will also download the subset of grids you need (and cache those) automatically?
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By default it isn't enabled. You need to enable it. However, if you installed it via conda-forge it is enabled by default.
This was referenced Mar 8, 2021
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