[mapserver-users] symbols indexed by an attribute

[Stephen Woodbridge]

http://mapserver.gis.umn.edu/mapscript.html

Pushkar Pradhan wrote:
> 
> Thanks Steve,
> I am now trying to built mapscript with perl, but there doesn't seem to be
> any documentation on that. Can anyone point me if there is docum.
> available on this, otherwise I will try to use php/mapscript?
> I welcome suggestions and your experience from everybody about perl vs.
> php with mapscript.
> 
> On Tue, 12 Feb 2002, Stephen Woodbridge wrote:
> 
> > I think you need to use mapscript then it should not be a problem. Using
> > mapscript implies that you build your web navigation tool using the Perl
> > or PHP version of mapscript.
> >
> > -Steve
> >
> > Pushkar Pradhan wrote:
> > >
> > > Hi everyone,
> > > My team wants me to create markers, lines and shades depend. upon
> > > particular attribs. from the shapefile.
> > > Eg. they created an attr. Shade_sym which is a no., that no. should be
> > > used to fetch symbol from the map file e.g. if Shade_sym = 29, the 29th
> > > symbol from the map file must be used.
> > > I do the foll. to accomplish the task:
> > >    CLASSITEM 'Shade_sym'
> > >    CLASS
> > >      NAME "sym = 29"
> > >      EXPRESSION ([Shade_sym] EQ 29)
> > >      SYMBOL 29
> > >      SIZE 2
> > >      COLOR 114 24 124
> > >    END
> > > Okay I think this is the optimal way, unless any body has other ideas.
> > > But they also want me to read COLOR AND/OR SIZE for the symbol from a
> > > file, e.g. the foll. is such a file, the first no. being the symbol no.:
> > > # value red green blue
> > >
> > > 1 255 250 250
> > > 2 248 248 255
> > > 3 245 245 245
> > > 4 220 220 220
> > > 5 255 250 240
> > > Thus I should be able to use the attr. Shade_sym's value 29 to index into
> > > this file and assign the RGB values to COLOR?
> > > Is there a way to do this? I've tried to be very brief.
> > > Thanks,
> > > ------------------------------------------------------------------------------
> > > PUSHKAR S. PRADHAN
> > > Research Assistant
> > > MISSISSIPPI STATE UNIVERSITY,
> > > STARKVILLE, MS 39759.
> > >
> > > Engineering Research Center
> > > Box 9627
> > > Mississippi State, MS 39762-9627
> > > ------------------------------------------------------------------------------
> >
> 
> ------------------------------------------------------------------------------
> PUSHKAR S. PRADHAN
> Research Assistant
> MISSISSIPPI STATE UNIVERSITY,
> STARKVILLE, MS 39759.
> 
> Engineering Research Center
> Box 9627
> Mississippi State, MS 39762-9627
> ------------------------------------------------------------------------------