topic Re: Extract Begin and End M Value from Route in Geoprocessing Questions

Extract Begin and End M Value from Route

MattKoukol — Thu, 18 Dec 2014 18:05:09 GMT

I am trying to populate two fields (BeginM and EndM) with the begin and end measures from route features. Does anyone have any tips on how this can be done? Note - I don't want Min and Max M's blindly placed in BeginM and EndM respectively, as the measures may run the opposite way of the linear feature.

Thanks for any help you can give!

Matt Koukol

Re: Extract Begin and End M Value from Route

RuthBowers — Sat, 25 Apr 2015 02:38:22 GMT

Look at ArcGIS Help (10.2, 10.2.1, and 10.2.2). I'm not sure that hyperlink pasted correctly. If it doesn't go the right place search

Calculate Field (Data Management)

This will explain how to use the field calculator to get properties of the geometry object like firstPoint.M and lastPoint.M. So you would add two columns for your from and to measures and populate them with the field calculator.

Re: Extract Begin and End M Value from Route

SepheFox — Sat, 25 Apr 2015 15:37:46 GMT

Hi Matt, try the AddGeometryAttributes tool. It has the ability to calculate line start/end M values. It's in the Data Management toolbox.

Re: Extract Begin and End M Value from Route

DaveVerbyla — Tue, 28 Nov 2017 23:07:41 GMT

Use the Field Calculator with Python parser:

BeginM = !Shape.firstPoint.M!

EndM = !Shape.lastPoint.M!

will return the start and end measure of the each polylineM to fields BeginM and EndM