Re: [GRASS-user] random raster map

2008-07-16 Thread Maris Nartiss
If You are interested in random surface (all cells with random values) You can use r.mapcalc rand(min, max) or r.random.cells or r.random.surface etc. To get raster with random POINTS use r.random and provide random SURFACE map as input for resulting point values. Like this: r.mapcalc rsurf=rand(m

Re: [GRASS-user] random raster map

2008-07-14 Thread Martin Landa
Hi, 2008/7/14 Maciej Sieczka <[EMAIL PROTECTED]>: >> How can I create a raster map with random values between a minimum >> and a max value ? I tried r.random but I do not know how to specify >> these min anx max values. [...] > In case you are not sure what GRASS module to use, but have a genera

Re: [GRASS-user] random raster map

2008-07-14 Thread Maciej Sieczka
[EMAIL PROTECTED] pisze: Dear All, How can I create a raster map with random values between a minimum and a max value ? I tried r.random but I do not know how to specify these min anx max values. In case you are not sure what GRASS module to use, but have a general idea of what you are lookin

Re: [GRASS-user] random raster map

2008-07-14 Thread G. Allegri
A simple hint. if you want your number being between XMax and XMin you could use: x = random_number(XMax-XMin)+XMin where 0<=random_number<=1 Anyway, r.mapcalc already contains rand(min,max), wich produces exactly what you want [1] giovanni [1] http://grass.itc.it/grass63/manuals/html63_user/r

Re: [GRASS-user] random raster map

2008-07-14 Thread Martin Landa
Hi, 2008/7/14 <[EMAIL PROTECTED]>: > How can I create a raster map with random values between a minimum and a > max value ? > I tried r.random but I do not know how to specify these min anx max values. you can create vector points layer by v.random out=vrandom n=1000 zmin=0 zmax=100 -z and the

[GRASS-user] random raster map

2008-07-14 Thread jessica . gervais
Dear All, How can I create a raster map with random values between a minimum and a max value ? I tried r.random but I do not know how to specify these min anx max values. Thanks in advance, Jessica _ Jessica Gervais Tel: +352- 425991-628 Mail: [EMAIL PR