[GRASS-user] More maps with same legend (for visually compare)

[Moritz Lennert]

On 07/11/08 15:06, Bornemisza Imre wrote:
> 
> Dear GRASS-User List,
> 
> I have a CSV file with X,Y,Z coords of 150 point in a time series (50 
> measuring).
> I imported it in a for cycle of $i (1..50):
> 
> v.in.ascii input=su1_data.csv output=su1_v_$i format=point fs=';' skip=2 x=2
> y=3 z=$iplus4 cat=0 --overwrite
> 
> and made surface with:
> 
> v.surf.rst input=su1_v_$i layer=1 dmax=25 dmin=5 zmult=1 tension=40 
> segmax=200
> npmin=100 zcolumn=dbl_$i elev=su1_v_surf_rst_$i --overwrite
> 
> I displayed the maps with:
> 
> d.erase
> d.rast su1_v_surf_rst_$i
> d.legend map=su1_v_surf_rst_$i
> 
> and would like compare it visually.
> 
> The problem is, that the scaling
>  and coloring of surfaces is different by each map.
> Is it possible to set with a parameter of v.surf.rst that
>  all maps legend should have use the legend
>  with the same highest and deepest point?
> I don't find so a parameter.
> Is there another solut ion to visualize the time series?

This is not a v.surf.rst issue, but a r.colors issues. You can either 
create a customized color table in a file and use r.colors rules= to 
apply these rules to all your maps, or, if you have one raster map which 
is the reference map, you can also use r.colors raster=

Moritz