topic Error with M value tolerances in Roads and Highways User Group (RHUG) Questions

Error with M value tolerances

CameronCole — Thu, 18 Apr 2019 18:19:30 GMT

Hi all,

I am new to Roads ans Highways and are working on initial set up.

I have created an ALRS and are now trying to load a network from a feature class that I already have.

I am receiving an error that states "The selected network units of measure does not match the M Tolerance of the existing feature class."

I am working in the 10.5.1 platform and have let the ALRS create the appropriate tables and feature schema.

I have a route feature class that is M and Z aware that I am trying to use to create the network.

Any help or insight is appreciated.

Re: Error with M value tolerances

NathanEasley — Thu, 18 Apr 2019 18:55:00 GMT

Hi Cameron,

I would encourage you to take a look at this topic that deals with tolerance and resolution settings in the LRS. http://desktop.arcgis.com/en/arcmap/latest/extensions/roads-and-highways/tolerance-and-resolution-settings-for-the-lrs.htm

The error message you're getting points to the XY tolerance/resolution values not matching the expected M tolerance/resolution values. Take a look at the XY tolerance/resolution, including the units, of the feature class you are trying to register as a network and verify the M tolerance/resolution is the correct conversion.

For example, if the XY tolerance was 0.1 feet and the resolution was 0.01 feet and you wanted to create a network in miles, your M tolerance would need to be 0.00001893939 (0.1 feet/5280) and the M resolution would be 0.000001893939.

Nathan @ Esri

Re: Error with M value tolerances

CameronCole — Thu, 18 Apr 2019 19:39:23 GMT

Hey Nathan,

Thank you for the documentation.

I was able to use feature class to feature class and then adjust the environments to match those of the R&H document you sent me to! Then the Network was loaded right in after field mapping.