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Questions tagged [grass-7.4]

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How to convert set of elevation CSV file from raster file in GRASS GIS?

I have set of elevation csv file, how to covert one raster file format? My csv file contain latitude,longitude and height and also the data have NA values. How to convert to GRASS GIS?
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SQL Error while using v.distance through simple python editor in grass

I try to execute the following code: grass.run_command('v.distance', from='tramstop', to='iso_tram', upload='cat',column='first_tram_distance', overwrite=True) but i get the "SyntaxError: invalid ...
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1answer
91 views

Adding extra parameter in QGIS processing in grass to close files after processing

The code below works but as this involves averaging thousands of files, grass shows an error message: Too many open files The code: ymax=31.4648437503 ymin=17.4068080185 xmax=-80.4330407378 xmin=-...
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1answer
112 views

Getting GRASS 7.4.4 Working in Python 3

I'm trying to get some GRASS functionality in a Python Script, specification r.series, but I'm struggling to import GRASS. I'm trying to uses the method outline on the GRASS Wiki, Working with GRASS ...
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1answer
35 views

v.net.allpairs - Missing parameter value: WHERE condition SQL statement without where keyword

v.net.allpairs is not running in QGIS 2.18.27 (but runs in QGIS 2.14). QGIS 2.18.27 has responded: Missing parameter value: WHERE condition SQL statement without where keyword. How to fix that?
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24 views

GRASS GIS 7.4: How to re-import training areas in g.gui.iclass? (GRASS GIS Supervised Classification Tool)

I would like to perform a supervised classification using GRASS GIS. Using the GRASS GIS Supervised Classification Tool (g.gui.iclass) I can select training areas and perform a supervised ...
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43 views

Recommended resources for viewshed generation using Grass GIS 7.4

I am working on a project where I need to create viewshed areas around towers with a radius of 5000 meters. The underlying DEM I created using free Lidar data. Uptill now I did all this on a laptop ...
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33 views

grass-session 1.0 produce ImportError cannot be imported in Spyder IDE

I am trying to use the recently developed grass-session package inside Spyder in Linux Mint with GRASS 7.4.3 installed with a aim to do some geoprocessing without starting GRASS explicitly. I ...
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21 views

How can I get an HTML output on GRASS GIS?

I'm using GRASS GIS to create a simple map with some text (d.text) and vector maps (d.vect) and I can have a .png output with the PNG Display Driver (which I looked it up on https://grass.osgeo.org/...
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1answer
45 views

TypeError during compilation of extensions in GRASS GIS using g.extension

I am using GRASS 7.4.0 on Ubuntu 18.04. I installed grass-dev using sudo apt-get install grass-dev, and then used g.extension v.centerpoint to try to install v.centerpoint. The output is below: $g....
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27 views

Erasing part of line vector outside raster region using GRASS?

I need to delete all the vector 'part' that it's outside the yellow raster region. How can I do it?
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2answers
87 views

GRASS v.net.iso tool produces empty output - QGIS 3.2.2

I want to split a network shapefile by cost isolines. I have two layers a point layer (with 297 records) a road network layer Every time I run the GRASS v.net.iso module in QGIS 3.2.2 on the road ...
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13 views

How to calculate C-factor from 4 NDVI map? Is it possible to do so?

i am trying to calculate the C- factor using NDVI value in GRASS GIS for which i am trying to download the LANDSAT images but there is no image that covers my basin as a whole. I am really confused .
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1answer
150 views

warning message when runing GRASS 7.4 in QGIS 3.0 for Mac 10.13.4

I'm trying to run r.reclass (GRASS 7.4) in QGIS 3.0 GIRONA in a Mac iOS HIGH SIERRA. Neverteheless, when I run the comand there is noresults at all but a warning message: WARNING: Default locale ...
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0answers
88 views

Installed GRASS Addons not appearing under modules [windows 10, grass 7.4.0]

I have installed GRASS 7.4.0 and then use the console to install the addons, r.denoise and r.patch.smooth. However, when I want to run these tools there is nothing under the addons section in the ...
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1answer
487 views

GRASS GIS 7.4 in Linux for command line usage - setting up environment (.bashrc file)

I need to use GGRAS GIS 7.4.0 on Linux server (Debian 8.10 Jessie) via command line (with flag --exec) and I'm still having troubles with it. Description: I compile and install GRASS GIS 7.4.0 with ...