[GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

Shane Carey careyshan at gmail.com
Mon Oct 15 07:38:49 PDT 2018


Great thanks, is there anything available that will snap these lines to the
polygon edges?

Thanks
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*


On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler <neteler at osgeo.org> wrote:

> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey <careyshan at gmail.com> wrote:
> >
> > Hi,
> >
> > I need to cut a floodplain polygon into one meter strips which are
> perpendicular to the river. This needs to be an automated process. Just
> wondering has anyone ever done this or similar in Grass GIS through python
> or a bash script?
> >
> > The link attached shows two slides. Stage one is the first slide and
> slide two is what I hope to end up with.
> >
> >
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>
> This addon seems to do (similar) perpendicular line creation:
>   v.civil - Generates a alignment for designing roads, channels, and
> ports in civil engineering
>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>
> Best
> Markus
>
> --
> Markus Neteler, PhD
> http://www.mundialis.de - free data with free software
> http://grass.osgeo.org
> http://courses.neteler.org/blog
>
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