Re: [GRASS-user] How to generate a random DEM Model of given size & resolution
Dear Mr.Moritz Lennert, Thank you so much for your quick response. I am more familiar with python than with shell scripting. I will look into the link you shared and if i have more questions, will get back to you. Regards, Bharath. On Mon, Sep 28, 2020, 8:50 PM Moritz Lennert wrote: > Hi, > > On 28/09/20 13:52, BHARATH RAM wrote: > > Hello, > > > > I want to generate a set of random DEMs ( epsg code known to me). I am > > aware that I need to use r.surf.fractal and specify fractal dimension. > > > > But how do I specify other parameters of the raster map (like length & > > breadth, resolution?) > > You just set the computational region using g.region. Any map you create > will respect that setting. > > > > > Also, can you guide me towards how generate a set of many such maps > > using scripting? > > The answer here really depends on your level of existing knowledge. Most > people nowadays prefer using Python for scripting, although you can also > create simple shell scripts. I would suggest that you read through > https://grasswiki.osgeo.org/wiki/GRASS_GIS_APIs first and come back to > us if you have more specific questions. > > > > > Also, are there any tips for me to follow so as to make this (DEM raster > > map) dataset generation as fast as possible? > > Speed will depend on the size of the maps you create. > > Moritz > -- *Disclaimer: *This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] How to generate a random DEM Model of given size & resolution
Hello, I want to generate a set of random DEMs ( epsg code known to me). I am aware that I need to use r.surf.fractal and specify fractal dimension. But how do I specify other parameters of the raster map (like length & breadth, resolution?) Also, can you guide me towards how generate a set of many such maps using scripting? Also, are there any tips for me to follow so as to make this (DEM raster map) dataset generation as fast as possible? I am a beginner to Grass (& a beginner to GIS software as well). So please forgive me if the question is trivial. Regards, Bsr -- *Disclaimer: *This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] How to generate a random DEM Model of given size & resolution
Hi, On 28/09/20 13:52, BHARATH RAM wrote: Hello, I want to generate a set of random DEMs ( epsg code known to me). I am aware that I need to use r.surf.fractal and specify fractal dimension. But how do I specify other parameters of the raster map (like length & breadth, resolution?) You just set the computational region using g.region. Any map you create will respect that setting. Also, can you guide me towards how generate a set of many such maps using scripting? The answer here really depends on your level of existing knowledge. Most people nowadays prefer using Python for scripting, although you can also create simple shell scripts. I would suggest that you read through https://grasswiki.osgeo.org/wiki/GRASS_GIS_APIs first and come back to us if you have more specific questions. Also, are there any tips for me to follow so as to make this (DEM raster map) dataset generation as fast as possible? Speed will depend on the size of the maps you create. Moritz ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
