[Mapserver-users] Problem with labels and symbols

[Johan Antonsson]

Sorry, I forgot to tell that I have three different maps. One in scale 250 000, one in 100 000 and in 50 000. I use MAXSCALE and MINSCALE to switch between the maps when I zoom in or out. I.e. all layers related to a map have the same MAXSCALE/MINSCALE values. It is when I zoom and pan within the scale interval of a certain map I run in to the problem.

/Johan

-----Original Message-----
From: David Fawcett [mailto:David.Fawcett at state.mn.us]
Sent: den 17 december 2003 16:59
To: Johan Antonsson
Subject: Re: [Mapserver-users] Problem with labels and symbols


Johan, 

By setting  MAXSCALE 50000, you are saying that you don't want the
symbols or labels to show up when the scale is greater than 50000.  

Take a look at MINSCALE and MAXSCALE in the mapfile reference.

http://mapserver.gis.umn.edu/doc40/mapfile-reference.html#class 

Hope that this helps.

David.

David J. Fawcett
MN Office of Environmental Assistance

>>> "Johan Antonsson" <Johan.Antonsson at ibitec.se> 12/17/2003 9:48:46 AM
>>>
Hi all,

I'm having problem displaying labels and symbols. Some of them
disappear when I zoom in/out or pan and then appear again in another
scale or pan position. It might have something to do with Swedish
specific characters but I can't se how that would effect symbols.
Another theory is that it has something to do with SYMBOLSCALE. When I
change SYMBOLSCALE different labels and symbols disapear. Below are
examples of how I describe my label and symbol layers.


LAYER
  NAME 'Label layer'
  GROUP 'map1'
  TILEINDEX 'tx_tileindex_t.shp'
  TILEITEM 'Location'
  STATUS DEFAULT
  TYPE annotation
  LABELANGLEITEM 'TRIKT'
  LABELITEM 'TEXT'
  MAXSCALE 50000
  SYMBOLSCALE 50000
  CLASSITEM 'KKOD'
 
  CLASS
     NAME 'Bebyggelse, enstaka gard, hus'
     EXPRESSION '1'
     LABEL 
       ANTIALIAS true
       COLOR 0 0 0
       FONT gsdtxt
       POSITION cc
       SIZE 6
       TYPE truetype
     END # LABEL
  END  # CLASS

  # etc...
END

LAYER
  NAME 'Symbol layer'
  GROUP 'map1'
  TILEINDEX 'gs_tileindex_t.shp'
  TILEITEM 'Location'
  LABELANGLEITEM 'SRIKT'
  STATUS DEFAULT
  TYPE Annotation
  MAXSCALE 50000
  SYMBOLSCALE 50000
  CLASSITEM 'KKOD'

  CLASS
      NAME 'Triangelpunkt'
      EXPRESSION '811'
      TEXT 'E'
      LABEL
       ANTIALIAS true
       COLOR 0 0 0
       FONT gsdsymbo
       POSITION cc
       SIZE 12
       TYPE truetype
      END # LABEL
  END  # CLASS

  # etc...
END 

Does anyone have an idea of what could be the cause of this behaviour?
Has anyone bumped in to a similar problem? 

TIA

/Johan

-------------------------------------------------
Johan Antonsson        johan.antonsson at ibitec.se 
Ibitec AB              http://www.ibitec.se 
------------------------------------------------



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