topic Elevation off road in ArcGIS Spatial Analyst Questions

Elevation off road

GeorgStreit — Wed, 20 Nov 2013 12:10:37 GMT

Hello,

i'm using the Modelbuilder in ArcGIS 10.1 to calculate pixels depending on their slope and distance from the road. The third necessary task is to find out, if the pixel is upwards the road or downwards. Is there any fast solution to do this. The question sounds simple but in ArcGIS i have no idea to that.

My first steps are:
Do Cost allocation from roadpoints and slope, getting areas which would be accessable from the roadpoint, then interpolating z value to each area, calculating the mean height and compare it to the height of the streetpoint value! This is a really dirty way to do so and i would be thankful for any help

Thanks
Georg

Re: Elevation off road

StigHeinesen — Thu, 30 Jan 2014 09:54:26 GMT

I am having a similar challenge, so any advice would be appreciated.

/Stig

Re: Elevation off road

GeorgStreit — Thu, 30 Jan 2014 10:05:43 GMT

hey,

i solved it some weeks ago with the spatial function: Path Distance

http://help.arcgis.com/en/arcgisdesktop/10.0/help../index.html#/Path_Distance/009z0000001q000000/

there you have the functionality to use a vertical factor. i used a table to differ between the different slopes. how the vertical factor works can you see here:

http://help.arcgis.com/en/arcgisdesktop/10.0/help../index.html#/How_the_horizontal_and_vertical_factors_affect_path_distance/009z000000z9000000/

i hope it works for you 🙂