from
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"name": "resolution", |
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"description": "Resamples the data cube to the target resolution, which can be specified either as separate values for x and y or as a single value for both axes. Specified in the units of the target projection. Doesn't change the resolution by default (`0`).", |
Doesn't change the resolution by default (0).
What does that practically mean?
When changing projection in the general case (e.g. say from UTM to lonlat), you can not "preserve" the resolution in a meaningful way because the transformation between the pixel grids is fundamentally non-linear.
It would indeed be possible to approximately preserve resolution in a small enough local area, but the current description does not reflect all the caveats and subtleties that are in play here.
e.g. do you aim to preserve approximate resolution in the center of the area of interest? Do you aim to preserve GSD in some sense? Do you aim to avoid up-sampling or down-sampling?
from
openeo-processes/resample_spatial.json
Lines 28 to 29 in 98ae014
What does that practically mean?
When changing projection in the general case (e.g. say from UTM to lonlat), you can not "preserve" the resolution in a meaningful way because the transformation between the pixel grids is fundamentally non-linear.
It would indeed be possible to approximately preserve resolution in a small enough local area, but the current description does not reflect all the caveats and subtleties that are in play here.
e.g. do you aim to preserve approximate resolution in the center of the area of interest? Do you aim to preserve GSD in some sense? Do you aim to avoid up-sampling or down-sampling?