[Mapserver-users] symbol without label

[David Mitchell]

Annotation layers only draw anything when the label is displayed.
You have two choices here:

1) Change layer type to point

2) Change label text to empty string

Option 1 will mean that all the symbols will be drawn (ie, no buffering 
to keep close symbols apart), but will draw regardless of whether there 
is a label or not. It is a trivial change.

Option 2 would mean that when two points were really close only one 
would be drawn (which is the effect you get with the annotation layer 
you posted).

I assume the problem you have shows when your scale goes above 8000? Try 
this for option 2 (note there are two slightly different layers here but 
they show up at different scales):

 >  LAYER # Flurstücke
 >    NAME         symbole
 >    DATA         flurstuecke_region
 >    STATUS       DEFAULT
 >    TYPE         ANNOTATION
 >      LABELITEM "OBJNUM"
 >      MAXSCALE 8000.0
 >      CLASS
 >      EXPRESSION ('[OBJNUM]'eq '0066ZZ3' OR '[OBJNUM]'eq 'G00D8HN')
 >      STYLE
 >        SYMBOL '../symbols/sp.gif'
 >      END
 >      LABEL
 >        POSITION CC
 >        SIZE TINY
 >        COLOR 255 255 255
 >      END
 >      COLOR        0 0 0       END
 >  END # States polygon layer ends here
 >  LAYER # Flurstücke
 >    NAME         symbole
 >    DATA         flurstuecke_region
 >    STATUS       DEFAULT
 >    TYPE         ANNOTATION
 >      LABELTEXT " "
 >      MINSCALE 8000.0
 >      CLASS
 >      EXPRESSION ('[OBJNUM]'eq '0066ZZ3' OR '[OBJNUM]'eq 'G00D8HN')
 >      STYLE
 >        SYMBOL '../symbols/sp.gif'
 >      END
 >      LABEL
 >        POSITION CC
 >        SIZE TINY
 >        COLOR 255 255 255
 >      END
 >      COLOR        0 0 0       END
 >  END # States polygon layer ends here

Bo Nintzel wrote:
> Dear list,
> In my map I want to draw a symbol instead of the label-text.
> The position of the symbol should be the same as the annotation.
> This is a part of my Map-File:
> 
>   # Start of LAYER DEFINITIONS 
> ---------------------------------------------
>  LAYER # Flurstücke
>    NAME         symbole
>    DATA         flurstuecke_region
>    STATUS       DEFAULT
>    TYPE         ANNOTATION
>      LABELITEM "OBJNUM"
>    LABELMAXSCALE 8000.0
>      CLASS
>      EXPRESSION ('[OBJNUM]'eq '0066ZZ3' OR '[OBJNUM]'eq 'G00D8HN')
>      STYLE
>        SYMBOL '../symbols/sp.gif'
>      END             LABEL
>        POSITION CC
>        SIZE TINY
>        COLOR 255 255 255
>      END
>      COLOR        0 0 0       END
>  END # States polygon layer ends here
>  # End of LAYER DEFINITIONS -------------------------------
> 
> With this, the Label-text is drawn on top of  the symbol. When I don't 
> draw the Label, there is no symbol. Is there a posibility to draw the 
> Symbol without the text.
> 
> Regards
> Bo Nintzel
> 
> 
> -----------------------------
> cand. geod. Bo Nintzel
> Geodätisches Institut
> TU Darmstadt
> -----------------------------
> 
> _______________________________________________
> Mapserver-users mailing list
> Mapserver-users at lists.gis.umn.edu
> http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
> 
> 


-- 
David Mitchell
Software Engineer
Telogis

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