MapScript - Show numbered coordinates as numbered dots on a map

[Kai Behncke]

On Mon, 4 Dec 2006 11:16:22 +0100, Martijn van Exel wrote
> Dear scripters,
> 
> I have a tab-separated text file containing numbered points (number 
> / x / y). I want to parse this file and put the points on the map as 
> numbered dots. How do I go about doing this in (C#) MapScript? Can I 
> determine the size of the dots and the size, font and colour of the 
> numbers? Can I make the numbers appear centered inside the dots?
> 
> Much appreciated,
> 
Hello Martijn,
this sounds quite interesting.
You can do this easily with PHP/Mapscript.
You can parse the text file in a way, that the x and y -koordinates are
written in a database (PostgreSQL/PostGIS or even Mysql (even without the
spatial extension)).

You can determine the size of the dots.
For example, if your data are in postgresql/postgis, use a new Layer
like:

LAYER
     NAME "poi"
     STATUS on
     TYPE point	
     LABELCACHE on

  CONNECTIONTYPE postgis      
  CONNECTION "user=postgres dbname=data host=localhost port=5432"
  DATA "the_geom from yourtable"
LABELITEM 'punktnumber'
    CLASS


  STYLE
   SYMBOL punkt
COLOR     120 0 0
 SIZE 14     # this determines the size of the dot 

 END        
          
     
            LABEL #this determines the label.
#You can determine size, font and colour of the 
# numbers. And you can make the numbers appear centered inside the dots.
               TYPE truetype
               FONT "arialbd"
               SIZE 8
               COLOR 0 0 0
               OUTLINECOLOR 255 255 255
               POSITION cc
               ANGLE auto
               MINFEATURESIZE auto
          END
     END
END

Regards, Kai
--
Dipl.-Geogr. Dipl.-Umweltw. Kai Behncke

Institut für Geoinformatik und Fernerkundung (IGF)
Universität Osnabrück
Kolpingstr. 7
49074 Osnabrück

Raum: 01/308
Tel.: +49 541 969-4450
E-Mail: mailto:kbehncke at igf.uni-osnabrueck.de 
Web:  http://www.igf.uni-osnabrueck.de