[GRASS-user] use rgbcolumn for vector line in vareas ps.map

[maning sambale]

Hamish,

Thanks for pointing out the obvious
color none!

Follow-up Q, how do I exclude polygon holes in vareas?

I'm starting to really like ps.map for batch processing map sheets :)

On Fri, May 22, 2009 at 2:33 PM, Hamish <hamish_b at yahoo.com> wrote:
>
> maning wrote:
>> I have an vector polygon where an attribute column defines the rgb
>> color for ps.map.  The problem is, vareas options does not allow to
>> use the rgbcolumn for line color.  Setting the width to very small
>> doesn't help either.  Is there a way to disable line render in vareas.
>
> to turn off boundaries set "color none"
>
> rgbcolumn also works for pattern color by the way.
>
> you can use a second vlines command with "type boundary" to draw
> boundary lines, but typically those will not have category numbers
> (and thus no GRASSRGB entry) because it is ambiguous as to which area
> the boundary belongs to, i.e. take the color from the left or right
> side of the line?
>
>
> for vpoints see also http://trac.osgeo.org/grass/ticket/342
>
>
>> Or should I split the vector polys into separate layer of polygon
>> categories (too many).
>
>  where cat IS >= x AND cat IS <= y
> ? (or similar SQL query for repeated vareas calls)
>
>
>
> Hamish
>
>
>
>
>
>



-- 
cheers,
maning
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