Conditionally skip field calculation for certain rows

Bud — Thu, 06 Jul 2023 02:19:43 GMT

Regarding the field calculator in the ArcGIS Pro attribute table (Python):

It would be great if there were a way to skip calculating a certain record, if certain conditions are met in the script.

For example, a the line doesn't have true curves, then calculate the shape normally. But if the line does have true curves, then skip the field calculation — without editing the row/invoking editor tracking.

I can do something that's close to that. I can return the original value. That works, but it does update the row, which seems unnecessary and invokes editor tracking (which is misleading, since nothing's really changed).

return orig_geom

Alternatively, I've tried return without specifying anything to return. But that sets the shape to null, which isn't what I want.

return

The same thing happens if I omit the return entirely. The shape gets set to null.

I know it would be ideal if I could avoid selecting lines with curves in the first place (in the Attribute Table). But there isn't a way to query for curves using SQL in the Select By Attributes tool. So doing it in the field calculator script seems like the only other option.

idea Conditionally skip field calculation for certain rows in ArcGIS Pro Ideas

Conditionally skip field calculation for certain rows