[GRASS-user] d.rast.arrows in high quality plot

[Niklas Neckel]

Dear all,

I'm trying to plot arrows, representing length proportional to magnitude in a printable high resolution map (with d.rast.arrows). Here is what I tried:     

#!/bin/sh
export GRASS_WIDTH=10000 
export GRASS_HEIGHT=10000
export GRASS_PNGFILE=testpng.png
export GRASS_PNG_COMPRESSION=0
#export GRASS_RENDER_IMMEDIATE=TRUE
export GRASS_TRUECOLOR=TRUE
g.region fig_arrows
d.mon start=PNG
d.rast map=background at PERMANENT 
d.rast map=Magnitude_map at PERMANENT 
d.rast.arrow map=Direction_map at PERMANENT type=compass  arrow_color=black grid_color=none  x_color=black unknown_color=red  skip=12 scale=20 magnitude_map=Magnitude_map at PERMANENT
d.mon stop=PNG
eog $GRASS_PNGFILE&

Unfortunately the plotted arrows are quite slim now... is there another solution to achieve this goal?

Many thanks,

Niklas


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