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Please add attribute to fields to the five output VBET feature classes that contains the area of each polygon feature. In all cases, the column name should be called area_ha and contain the area in hectares, to 5 decimal places:
Outputs\vbet.gpkg
active_floodplain
inactive_floodplain
vbet_68
vbet_80
vbet_channel_area
As discussed, the geometries are in WGS84 so they will need re-projecting for this calculation. I suggest once each feature class is created, looping over each feature, converting the individual geometry to Albers Conic (EPSG: 5070) and grabbing the area.
The other option would be to do a feature class level operation to reproject the entire layer, but this creates clutter that needs cleaning up, and unnecessary IO.
Notes
double check the EPSG above. I thiiiiiink it's right
more tickets to come with additional VBET area metrics.
The text was updated successfully, but these errors were encountered:
Please add attribute to fields to the five output VBET feature classes that contains the area of each polygon feature. In all cases, the column name should be called
area_ha
and contain the area in hectares, to 5 decimal places:As discussed, the geometries are in WGS84 so they will need re-projecting for this calculation. I suggest once each feature class is created, looping over each feature, converting the individual geometry to Albers Conic (EPSG: 5070) and grabbing the area.
The other option would be to do a feature class level operation to reproject the entire layer, but this creates clutter that needs cleaning up, and unnecessary IO.
Notes
The text was updated successfully, but these errors were encountered: