New answers tagged grass
To reduce the memory footprint of v.to.rast with large maps, set in v.to.rast the parameter: rows=value to a value much less than the default 4096.
I highly recommend to use the stable version of Grass (i.e 126.96.36.199). Regards,
I'm not sure about NVIZ. I would suggest, as an alternative, you look at another QGIS plugin called Qgis2threejs [https://plugins.qgis.org/plugins/Qgis2threejs/]. It can produce higher resolution 3D images than the examples loaded above. See these blogs: http://anitagraser.com/2014/03/15/3d-viz-with-qgis-three-js/ ...
I think this question has been largely answered except for a couple of points about the issues. Heat maps can be great, but a classic flaw and issue lies with interpretation. Take the difference between a heat map of crime events compared to a map (heat or otherwise) of crime rate/proportion. While the event heat map might be useful in terms of identifying ...
Perhaps you haven't set computational region correctly? Try running g.region before r.mapcalc: g.region rast=DEM This makes the computational region match the extent of your map DEM. See also: http://grasswiki.osgeo.org/wiki/Computational_region
GRASS 7 is still in a beta release stage. The Kyngchaos.com package is a stable release of QGIS, which does not yet include GRASS 7 internally. You can get a copy using the Homebrew package manager and the OSGeo4Mac tap: Install Xcode, Xcode Command Line Tools and Homebrew Then, in Terminal run: brew install osgeo/osgeo4mac/grass-70 (if your ...
To get distances in meters, project the data. How to do that is a mechanical issue readily resolved by referring to the software manuals. The harder part of the question concerns what projection to use? Because a comment to the question indicates that North America is the region of interest, the shape of this continent--and the situation of its coastlines ...
In spite of what it says in the GRASS manual for v.distance, units are the same as the units of the coordinate system, so in a lat/lon coordinate system you will indeed get decimal degrees. In the GRASS 7 manual the above (incorrect) statement is missing. On the other hand, if you create a Spherical Mercator based LOCATION, EPSG 3857, as you mentioned, the ...
You want your data projected into Meters, which you can project in GRASS or use QGIS to do that - North_America_Albers_Equal_Area_Conic projection EPSG 102008 would work for North America, for example. Then I'm not sure if you can have data in multiple coordinate systems in 1 workspace, or if you should create a new workspace in EPSG: 102008 to store your ...
can you help me? I'm trying to modify the plug-in QuickEsport! if possible should be exported to PDF, not only the attribute of the "dbf" the pictures!
You can call r.mapcalc in for loop. In shell it could look like this: X=5 # initialize first map r.mapcalc "old = 10" # loop for I in `seq $X` do r.mapcalc "new = old + 10" --overwrite g.rename rast=new,old --overwrite done In shell command seq 5 creates a sequence 1, 2, 3, 4 , 5. Note that you shouldn't use r.mapcalc like this (read from and write ...
It's caused by a picture item with an invalid or corrupt picture path. Click on the item and check the image source.
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