topic Re: Calculate M-Values for Polyline in Data Management Questions

Calculate M-Values for Polyline

GrantHopkins — Thu, 09 Jun 2011 19:03:01 GMT

Hi there!

I have a road network that includes M values. I want to ensure that all my roads have M values set as the distance/length. How can I set all the roads to have their M value equal their length?

I realize you can right click on a selected road and use the Route Measure Editing > Set As Distance... BUT I don't feel like doing that for hundreds of roads! I need a way to do this quickly to all the roads at once.

Thank you for any help!!
Grant

Re: Calculate M-Values for Polyline

HardolphWasteneys — Thu, 09 Jun 2011 21:07:41 GMT

Grant,

LENGTH is the default option when you use the CREATE ROUTES tool. Might be fastest to just recreate the routes and select that option. A way of checking graphically might be to HATCH your routes and compare the end value hatch labels to the length.

Hardolph

Re: Calculate M-Values for Polyline

GrantHopkins — Wed, 15 Jun 2011 19:17:51 GMT

Grant,

LENGTH is the default option when you use the CREATE ROUTES tool. Might be fastest to just recreate the routes and select that option. A way of checking graphically might be to HATCH your routes and compare the end value hatch labels to the length.

Hardolph

Hi Hardolph,
Thanks for your reply!! That's exactly what I need to do EXCEPT for the whole Coordinate Priority. Is there a way to use the accumulating lengths for each line but have them accumulate in the digitize direction? I need to keep my routes in a specific way (in increasing civic address direction), I'm trying to avoid having to go to each road and flip it if it's been changed due to the coordinate priority. I hope this makes sense.

Thanks!
Grant

Re: Calculate M-Values for Polyline

HardolphWasteneys — Thu, 16 Jun 2011 06:45:17 GMT

Grant,

In that case you need to generate a FROM and a TO field for input using the TWO_FIELDS option under Measure Source. Do this by adding the fields to your feature class and using field calculator to set the FROM field = 0 and the TO field = Shape_Length . That ought to respect digitizing direction in setting the M values of the created routes.

Hardolph