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

[Shane Carey]

Hi All,

I don't think v.transects is going to work for me as lines appear to be
cutting across each other. Is there another tool in Grass that can cut the
floodplain polygon into 5m lengths (as green lines in image attached)

Thanks



On Luan 15 DFómh 2018 at 15:38, Shane Carey <careyshan at gmail.com> wrote:

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