[mapserver-users] Attribute based symbol

Adam Eskreis aeskreis at gmail.com
Wed May 27 14:59:27 EDT 2009


It doesn't seem to be working for me

I get the following error from apache:

 [MapServer Error]: msAddImageSymbol(): Error opening image file
/var/www/htdocs/maps/[symbol].

I am using the symbol as:

SYMBOL "[symbol]"

I also tried

SYMBOL [symbol]

neitehr works

Is this only possible with mapserver 5? I believe I am using 4.10

Thank you

-Adam

On Wed, May 27, 2009 at 2:26 PM, Steve Lime <Steve.Lime at dnr.state.mn.us>wrote:

> You can bind a style symbol to an attribute. The value needs to be the name
> of a
> system already loaded by MapServer or the name of a local image. You cannot
> reference a image url.
>
> Steve
>
> >>> On 5/27/2009 at 12:26 PM, in message
> <a3cc80ca0905271026p141e3f92mf817e0e596f74ec at mail.gmail.com>, Adam Eskreis
> <aeskreis at gmail.com> wrote:
> > I am trying to create a layer that has a symbol, however, I want the
> symbol
> > for each geometry to be based on a field from the database.  For
> instance, I
> > am trying to make a layer that would look something like this:
> >
> > LAYER
> >    GROUP symbol_layer
> >    TYPE point
> >    STATUS on
> >    CONNECTIONTYPE postgis
> >    CONNECTION "<connection string>"
> >    DATA "the_geom from (SELECT the_geom, symbol_img_url from foo) as foo
> > using unique id using SRID=-1"
> >    CLASS
> >       STYLE
> >           SYMBOL "[symbol_img_url]"
> >       END
> >    END
> >  END
> >
> > Is something like this possible?  If not, what part of the source would I
> > have to edit in order to make it possible?
> >
> > Thank you
> >
> > -Adam
>
>
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