[GRASS-user] calculate height above ground for a specific vertical angle of view

Hello, I have calculated viewshed maps from one point of view at 2m height increasing the altitude above topography from 0 to 250m. So with r.series i can calculate the total visible height (sum of True in meter) or the total invisible height(sum of false in meter), or the vertical visible

Re: [GRASS-user] How to use a mask with v.surf.idw ?

On 21/06/17 16:17, Luí­s Moreira de Sousa wrote: Dear all, I would like to know how to use a mask with the v.surf.idw module. I have tried using r.mask with both raster and vector maps, but v.surf.idw always produces a surface encompassing the entire region [0]. Is there any other way of

[GRASS-user] How to use a mask with v.surf.idw ?

Dear all, I would like to know how to use a mask with the v.surf.idw module. I have tried using r.mask with both raster and vector maps, but v.surf.idw always produces a surface encompassing the entire region [0]. Is there any other way of forcing this module to operate within an area of

Re: [GRASS-user] Matching Histograms for Aerial Photography?

On 21/06/17 08:03, Jeshua Lacock wrote: On Jun 20, 2017, at 6:02 AM, Moritz Lennert wrote: You can try the addon: i.histo.match. You can install it with g.extension. Hi Moritz, Thanks for the suggestion. Currently the data is raster - I assume I will have