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Hi,

I have
dataset which consists of about 40 millions parcels. Some of them have the same
identifier and I would like to join them into one area (with
dissolve lines). I would like to use custom transformer which is very similar
to https://knowledge.safe.com/articles/47216/using-arcpy-for-fme-feature-processing.html.
I have FeatureWriter, PythonCaller and FeatureReader Transformer and I have a problem with keeping attributes after FeatureWriter
transformer because in the PythonCaller Transformer I would like to use
Attribute Accumulation (…”AREA SUM; CITY FIRST; POSTCODE FIRST; COUNTRY
FIRST”…). I will need these information as a final score. Maybe is here someonebody
who could help me?

Hi,

Got the right format, Just change the last bit of the python code from :

arcpy.Dissolve_management(inFeatures, outFeatureClass, dissolveFields, "", "MULTI_PART", "DISSOLVE_LINES")

to

arcpy.Dissolve_management(inFeatures, outFeatureClass, dissolveFields, "AREA SUM; CITY FIRST; POSTCODE FIRST; COUNTRY FIRST", "MULTI_PART", "DISSOLVE_LINES")

as shown in:

http://desktop.arcgis.com/en/arcmap/latest/tools/data-management-toolbox/dissolve.htm

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