[GRASS-dev] [GRASS GIS] #1838: r.mask: allow use of vector map as input

[Paulo van Breugel]

+ 1


On Mon, May 20, 2013 at 4:32 PM, GRASS GIS <trac at osgeo.org> wrote:

> #1838: r.mask: allow use of vector map as input
>
> --------------------------+-------------------------------------------------
>   Reporter:  mlennert     |       Owner:  grass-dev@…
>       Type:  enhancement  |      Status:  closed
>   Priority:  normal       |   Milestone:  7.0.0
>  Component:  Raster       |     Version:  svn-trunk
> Resolution:  fixed        |    Keywords:  mask, vector, r.mask
>   Platform:  Unspecified  |         Cpu:  Unspecified
>
> --------------------------+-------------------------------------------------
>
> Comment(by hamish):
>
>  To be honest, I find it hard to justify not running `v.to.rast` + r.mask
>  as a two step process. You either respect the current region setting, or
>  the v.to.rast operation is partially undefined. Having the module change
>  the region (and if so, internally, via WIND_OVERRIDE & the
>  grass.use_temp_region() python function) for any reason seems like a
>  slight misfeature to me.
>
>  Consider the case that the vector is much larger than the raster (national
>  coastline, I'm offen making coastal "land.mask" rasters from that), you
>  wouldn't want to rasterize the entire country at the current raster
>  resolution. Of course it's possible to only shrink the region with a
>  little scripting work, and it could be a nice efficiency trick to do that,
>  but be careful that the logic for it might fail for lat/lon near the
>  dateline)
>
>
>  do one thing well,
>  Hamish
>
> --
> Ticket URL: <https://trac.osgeo.org/grass/ticket/1838#comment:8>
> GRASS GIS <http://grass.osgeo.org>
>
>
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