topic Re: Compare pre-edit geometry with edited geometry in Attribute Rules Questions

Compare pre-edit geometry with edited geometry

Bud — Fri, 04 Mar 2022 01:01:32 GMT

In an Arcade attribute rule:

Is there a way to compare a feature's geometry before the edit was made...
vs.
...the edited geometry?

Example:
If the pre-edit geometry is different from the edited geometry, then do x to the geometry.
Else, do nothing.

Related: Attribute Rules: Update only on geometry change

I was hoping I'd be able to use $feature.shape as to get the pre-edit geometry. But that failed. Which is weird, because I can use $feature.shape_length without issue.

Re: Compare pre-edit geometry with edited geometry

KimberlyGarbade — Thu, 03 Mar 2022 16:51:38 GMT

Equals(geometey($feature),geometry($originalfeature))

Not sure you NEED the geometry functions but it doesn't hurt.

Not near a comouter, but i think you can use IsEmpty to determine if the feature existed before it was edited (i.e reshaped, moved, or added)

Re: Compare pre-edit geometry with edited geometry

Bud — Tue, 22 Mar 2022 05:41:26 GMT

For my records, here's where the $originalfeature global variable can be found in the docs:

Attribute Rule Calculation
Globals
Variable Name Type Description
$datastore FeatureSetCollection A collection of layers in the same feature service or database as the$featureexecuting the script.
$editcontext.editType Text Indicates whether the edit event isINSERT,UPDATE,DELETE, or NA(not applicable).
$feature Feature The feature being calculated.
$originalFeature Feature The previous state of the feature being calculated.
$featureSet FeatureSet A collection of features in the same table as the$featureevaluating the expression.

- Identify whether a specific attribute value has changed
- Arcade: Editing M-values not treated as change to geometry

$datastore	FeatureSetCollection	A collection of layers in the same feature service or database as the$featureexecuting the script.
$editcontext.editType	Text	Indicates whether the edit event isINSERT,UPDATE,DELETE, or NA(not applicable).
$feature	Feature	The feature being calculated.
$originalFeature	Feature	The previous state of the feature being calculated.
$featureSet	FeatureSet	A collection of features in the same table as the$featureevaluating the expression.