[GRASSLIST:5863] Re: projection, color rules for vectors

Moritz Lennert mlennert at club.worldonline.be
Tue Mar 25 11:05:51 EST 2003


> Hello all,
>

>
> I wanted to display a map of Germany (5E-16E, 47N-56N) using Universal
> Polar Stereographic projection and wgs84 ellipsoid, but it is still wider
> than higher. I tried the lat-lon projection before, but the result was the
> same. Actually, on most commercial general maps of Germany, the country is
> "almost the same wide as tall", while all these projections show it much
> wider. Which projection/ellipsoid would you recommend for usage on such
> location as Germany?

Have you tried Gauss-Krüger ?

> Another question concerns the colours. For raster maps, I can use the
> r.colors command and the "rules" colorset where I define some colours for
> some fixed values and the rest is interpolated. Is there any way to define
> such rules and then use d.vect.area with some value, so that the fillcolor
> is taken from the rules table?

AFAIK, there are no such "automatic" rules for d.vect.area, so you have to
define the legend file yourself.

Moritz




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