scratch work to assign spatial:transform when creating geozarr metadata#36
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kylebarron wants to merge 4 commits intomainfrom
Draft
scratch work to assign spatial:transform when creating geozarr metadata#36kylebarron wants to merge 4 commits intomainfrom
kylebarron wants to merge 4 commits intomainfrom
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kylebarron
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Apr 7, 2026
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| scale_factor_x = overview.transform.a / geotiff.transform.a | ||
| scale_factor_y = overview.transform.e / geotiff.transform.e |
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This is a change from the example on main. I think it's best to always calculate the scale factor in terms of both x and y, in case it differs. It does differ in some cases (such as in an NAIP sample image I use often) due to pixel rounding for overviews.
kylebarron
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Apr 7, 2026
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| multiscales_attrs["multiscales"]["layout"][0]["spatial:transform"] = list(geotiff.transform) | ||
| for item, overview in zip( | ||
| multiscales_attrs["multiscales"]["layout"][1:], geotiff.overviews, strict=True | ||
| ): | ||
| item["spatial:transform"] = list(overview.transform) |
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After multiscales metadata has been created, this assigns spatial:transform onto each level
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Just creating a draft branch/PR to keep track of my changes to assign
spatial:transformonto multiscales metadata