[mapserver-users] Re: Adding a buffer symbol

[thomas bonfort]

> At the moment I am just using the CGI mapserver. I was wondering if this can
> be done or ben achieved using Labels and symbols? but if needs be then I
> guess either javascript or php would be used to do this.

you could do that using a special layer in your mapfile, and using url
parameters to define the x,y of your click and the diameter of your
circle:

http://.....&map.layer[buffer]=FEATURE+POINTS+500000+1000000+END+END&map.layer[buffer].class[0].style[0]=SIZE+10

your "buffer" layer would be defined as

LAYER
 TYPE POINT
 NAME "buffer"
 CLASS
  STYLE
   SYMBOL "circle"   #circle symbol has FILLED FALSE
   COLOR 255 0 0
  END
 END
END

regards,
thomas