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Implications of using absolute cellsize after conversion from latlng to meters? #124

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chase-dwelle opened this issue Aug 31, 2020 · 1 comment
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Implications of using absolute cellsize after conversion from latlng to meters? #124

chase-dwelle opened this issue Aug 31, 2020 · 1 comment

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@chase-dwelle
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I'm using focal statistics with GeoTIFFs in EPSG:4326, I used the lnglat_to_meters to convert the coordinates to meters. However, when doing this I get a negative cellsize_y, which causes downstream issues.

Is there any issue with using return cellsize_x, np.abs(cellsize_y) to address this, or will their be ramifications I'm not accounting for?
chase-dwelle added a commit to chase-dwelle/xarray-spatial that referenced this issue Aug 31, 2020
@chase-dwelle
Return absolute cell size. Relates to makepath#124
d662b1e
@chase-dwelle chase-dwelle mentioned this issue Aug 31, 2020
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brendancol pushed a commit that referenced this issue Sep 3, 2020
@chase-dwelle
Add annulus focal kernel (#126)
b13c9ed 
* Adding annulus kernel

* Allow outputting of z-scores

* Return absolute cell size. Relates to #124

* Change type check to np.floating

* Remove focal point from annulus kernel.

* Remove z-score from hotspots

* Refactored kernels for focal statistics.

* Adding tests for refactored focal statistics.

* Simplify annulus kernel function by referencing circular kernel
@chase-dwelle
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This change was merged, code change is here: https://github.com/chase-dwelle/xarray-spatial/blob/644a37be6a241939ccdd7ac0962e2a0c0deb0124/xrspatial/focal.py#L97

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