Skip to main content
Question

How to generate elevation surface from 3D line features

C

Hello,

 

I am in the process of developing a 3D noise model using FME to process the geospatial datasets ready to convert into noise modelling files.

 

As part of this process, after having draped road centrelines to make them 3D, I need to then generate an elevation surface from the 3D road centreline geometries that will be used to drape bridges and breaklines so that their elevations align (there is a reason why we want to do this rather than draping bridge and breaklines to DTM/DSM which I can explain if required).

 

Appreciate any advice on how best to approach this?

    2 replies

    virtualcitymatt
    Celebrity
    Forum|alt.badge.img+35

    I think all you need to do it is run the 3D roads into a TINGenerator and you'll get a surface out the end.

    C
    • chris_y
    • Author
    • August 9, 2022
    virtualcitymatt wrote:

    I think all you need to do it is run the 3D roads into a TINGenerator and you'll get a surface out the end.

    Thank you Matt - in the end I have used a raster DEM generator - effectively creating a DEM from all of the pre-draped and smoothed road segments that are tagged as being on and/or leading up to the bridge objects. Seems to have worked but this is only on a small scale test model at the moment and needs to be expanded to much wider extents eventually - at that point I wonder if using the TIN generator would be better.

    Reply


    Helpful Members This Week

    Community Stats

    31,328
    Posts
    118,863
    Replies
    38,957
    Members

    Latest FME

    Terms & ConditionsCookie settings

    Cookie policy

    We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

     
    Cookie settings
    A product of
    Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.