[GRASS-user] Distance surface 3D

Moritz Lennert mlennert at club.worldonline.be
Wed Sep 16 07:11:12 PDT 2020



Am 16. September 2020 15:45:31 MESZ schrieb Edward Guevara <edarague at gmail.com>:
>Muy buenos días para todos, tengo una consulta: ¿Sabe alguien cómo puedo
>medir la distancia de un vector tipo polyline en una superficie 3d, en mi
>caso un DEM?, estoy buscando alguna opción en grass pero no la encuentro.
>La función en ArcMap se llama "Add Surface Information". ¿Alguna
>alternativa de código abierto que pueda ejecutar desde script o línea de
>comando?
>Gracias.
>
>Good morning everyone, I have a question: Does anyone know how I can
>measure the distance of a polyline-type vector on a 3d surface, in my case
>a DEM? I'm looking for an option in grass but I can't find one. The
>function in ArcMap is called "Add Surface Information". Any open source
>alternative that I can run from script or command line?

As far as I know, as long as your line is a real 3D line, v.to.db with option=length measures that length in 3D.

You can use v.drape to transform a 2D line into 3D with the help of your DEM.

Moritz

>Thank you.
>
>*Edward Guevara E-mail  edarague at gmail.com <ne.d.guevara at cgiar.org>*


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