Table of Contents
The Video
Introduction
Learn the easiest way to count feature attachments in ArcGIS Pro using ArcPy. In this practical Python tutorial, you’ll use the Calculate Field geoprocessing tool and an Arcade expression to automatically count the number of attachments for every feature or record.
Mastering ArcGIS Pro ArcPy Search, Insert, & Update Cursors
Free on YouTube! ArcPy Cursors from the data access module enable you to streamline your GIS workflows, automate repetitive tasks, and witness the full potential of spatial data manipulation in ArcGIS Pro by accessing, inserting, and updating features in your datasets.
Import ArcPy
arcpy module.
import arcpy
User Inputs
We have two user inputs.
in_features: The feature layer to count the attachments for.count_field: An existing numeric field for adding the count values
## the feature layer to count the attachments for
in_features = arcpy.GetParameter(0)
## the field to update the counts
count_field = arcpy.GetParameterAsText(1)
Count Points in Polygon
CalculateField() tool and a dash of Arcade.
arcpy.management.CalculateField(
in_table = in_features,
field = count_field,
expression = "Count(Attachments($feature))",
expression_type = "ARCADE"
)
Create the custom tool in ArcGIS Pro
See the video.
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All the code in one place
import arcpy
########################################################################################
## Documentation Links:
## https://doc.esri.com/en/arcgis-pro/latest/arcpy//functions/getparameter.htm
## https://doc.esri.com/en/arcgis-pro/latest/arcpy/functions/getparameterastext.html
## https://doc.esri.com/en/arcgis-pro/latest/tool-reference/data-management/calculate-field.html?tabs=python
##
## Note: this will not tell you if attachments are enabled or not. If attachments
## are not enabled, 0 (zero) will be returned for each feature.
##
########################################################################################
########################################################################################
## USER INPUTS #########################################################################
## the feature layer to count the attachments for
in_features = arcpy.GetParameter(0)
## the field to update the counts
count_field = arcpy.GetParameterAsText(1)
########################################################################################
## GET ATTACHMENT COUNT PER FEATURE ####################################################
arcpy.management.CalculateField(
in_table = in_features,
field = count_field,
expression = "Count(Attachments($feature))",
expression_type = "ARCADE"
)
########################################################################################
