[mapserver-users] Adding symbols on top of polyline elements

Adrian Popa adrian_gh.popa at romtelecom.ro
Mon Nov 10 01:51:28 PST 2008


Hello everybody,

I have a map that displays roads stored in a polyline format. I would 
like to mark one-way streets with an arrow symbol drawn on top of the 
road itself. The symbol can be as small as possible (for beginning I 
would like to be able to superimpose it anywhere between the street 
ends, and later on I will lock it to be next to one of the ends).

I can already select the one way streets based on the following template:

    
CLASS                                                                                                 

       Name 
"OneWay"                                                                               

       EXPRESSION 
/^FO040127$|^FO040132$|^FO040139$|^FO040120$|^FO040104$|^FO040131$|^FO040146$|^FO040129$/
       
STYLE                                                                                              

          COLOR 255 0 
0                                                                                   

          WIDTH 
4                                                                                         

       
END                                                                                                

       
LABEL                                                                                              

           COLOR 0 0 
255                                                                                  

           TYPE 
TRUETYPE                                                                                  

           FONT 
arial                                                                                     

           SIZE 
8                                                                                         
                                              
           ANTIALIAS 
TRUE                                                                                                                                                          

           POSITION 
AUTO                                                                                                                                                           

           ANGLE AUTO
           PARTIALS 
TRUE                                                                                                                                                           

           MINDISTANCE 
0                                                                                                                                                           

           BUFFER 0  
      
END                                                                                                                                                                          

   END

Can you show me an example of how to draw such a symbol on top of the layer?
Thank you

Adrian




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