topic Creating a new line from Z and M values - How? in Python Questions

Creating a new line from Z and M values - How?

ClaireParsons1 — Fri, 04 May 2012 13:10:59 GMT

Hi Everyone

I wonder if someone can help - Ihave to produce some cross-sections and as you are probably aware ArcGIS doesn't do this to scale.
so I therefore wondered how i could do this - I know that several people have managed this by Interpolating Z values from a TIN/Raster then creating this line as a route using
Linear referencing.

After completing this process I need to take the M Values and Z values and re-plot the line using these - as anyone got an idea of how I could do this?

Thanks
CLaire

Re: Creating a new line from Z and M values - How?

DuncanHornby — Fri, 04 May 2012 15:20:33 GMT

Claire,

You should always state what version of ArcGIS you are using if you want us to help you as this dictates what can or cannot be done.

If you have ArcInfo then have a look at this tool Feature Vertices To Point in the Data Management toolbox. You could then add M and Z fields and populate using a simple calculate script extract the ZM values.

Duncan

Re: Creating a new line from Z and M values - How?

ClaireParsons1 — Sat, 05 May 2012 10:03:24 GMT

I understand that you have created points from the line and how to add Z values to a field but how do i extract M values?

Re: Creating a new line from Z and M values - How?

DuncanHornby — Mon, 07 May 2012 00:07:48 GMT

Claire,

You add a 2 new fields, one for Z and one for M. Then you run the calculate field tool with a simple bit of python that extracts the Z or M value from the point geometry. Look at this page about reading properties of points in python.

Duncan