Re: [GRASS-user] r.watershed

Hi Shane. I'm happy to report that I've modeled overland water flow with r.watershed for over a quarter million acres, consisting of several large project sites, at 1 meter DEM resolution. The data source was LiDAR points to make the DEMs. At this resolution, it becomes necessary to add culverts,

Re: [GRASS-user] r.watershed

Shane Carey wrote > Hi, > > I am trying to extract river network from a 5m DEM with some success using > r.watershed. Has anyone tested this algorithm on high resolution LiDAR > data > for example - 1meter DTM and what kind of results have they obtained? in the NC sample dateset there is lidar de

[GRASS-user] r.watershed

Hi, I am trying to extract river network from a 5m DEM with some success using r.watershed. Has anyone tested this algorithm on high resolution LiDAR data for example - 1meter DTM and what kind of results have they obtained? Thanks -- Le gach dea ghui, *Shane Carey* *GIS and Data Solutions Cons

Re: [GRASS-user] ST{R,V}DS in different mapsets

Ken, You need to allow the access of those mapsets with g.mapsets (plural). Best regards, Laurent 2017-12-05 6:56 GMT-06:00 Ken Mankoff : > Dear GRASS List, > > I'm working with some STRDS and STVDS and having trouble accessing an > STRDS located in a different mapset. > > I can provide a full

Re: [GRASS-user] Regarding Testing Grass GIS Module

Thanks a lot. On 5 Dec 2017 20:28, "Moritz Lennert" wrote: > On 03/12/17 15:36, Sunveer Singh wrote: > >> I want to test Grass GIS Module i.vi >> What are test we have to add in python for module "i.vi " >> > > > I would chose some of the indices, create necessary 4x4

Re: [GRASS-user] Splitting Up an Area

On 05/12/17 01:09, Joshua Quesenberry wrote: All, Any suggestions on how best I could split up a region into 40-60 acre segments using linear features (ridges, streams, roads, trails, etc.)? The watershed tool seems to split along ridges and ravines fairly well, however, it seems I can only d

Re: [GRASS-user] Regarding Testing Grass GIS Module

On 03/12/17 15:36, Sunveer Singh wrote: I want to test Grass GIS Module i.vi What are test we have to add in python for module "i.vi " I would chose some of the indices, create necessary 4x4 pixel raster bands using r.in.ascii (see the test for r.slope.aspect for an

Re: [GRASS-user] How to sample an STVDS based on an STRDS

Hi Sören, On 2017-12-05 at 13:12, Sören Gebbert wrote: > there is no functionality for vector aggregation available in GRASS > GIS Temporal Framework. OK - good to know I'm not missing anything. > Dependent on your STVDS, maybe you can convert it into a STRDS by > using v.to.rast for each vecto

Re: [GRASS-user] ST{R,V}DS in different mapsets

Dear Ken, you have to add the required mapset to your mapset search path using g.mapsets. This is a feature of the temporal framework to check only for temporal databases of mapsets in your current mapset search path. Best regards Sören 2017-12-05 13:56 GMT+01:00 Ken Mankoff : > Dear GRASS List,

Re: [GRASS-user] How to sample an STVDS based on an STRDS

Dear Ken, there is no functionality for vector aggregation available in GRASS GIS Temporal Framework. Dependent on your STVDS, maybe you can convert it into a STRDS by using v.to.rast for each vector layer and then organize the resulting raster layers in a new STRDS. Best regards Sören 2017-12-05

[GRASS-user] How to sample an STVDS based on an STRDS

Hi, I'm fairly new to the temporal features in GRASS. I think I'm looking for the inverse of t.rast.aggregate.ds - that is, I have an STRDS with arbitrary intervals (roughly, 24 day windows moving about every 6 days). I have an STVDS with daily data. I'd like to aggregate the daily STVDS to mat

[GRASS-user] ST{R,V}DS in different mapsets

Dear GRASS List, I'm working with some STRDS and STVDS and having trouble accessing an STRDS located in a different mapset. I can provide a full MWE, but briefly: t.sample inputs=bar sample=foo@foo intype=strds samtype=strds method=contain Reports: ERROR: Unable to execute sql statement. You