[mapserver-users] labeling

[Seamus Thomas Carroll]

My method is very similiar except you have TILEINDEX and I have DATA and I 
dont use CLASSITEM.  My EXPRESSIONs work without CLASSITEM.

Is there a reason for using TILEINDEX over DATA and using CLASSITEM?

Seamus





On Wed, 10 Jul 2002, Joe Bussell wrote:

> We use a road classification value which is present in our *.dbf files.
> The trick is to define different classes depending on the data.
> 
> LAYER
>     NAME    cityCenter
>     GROUP   defaultLayer
>     TYPE    POINT
>     TILEINDEX td_sm.shp
>     STATUS  ON
>     LABELITEM "NAME"
>     CLASSITEM "DISPCLASS"
>     MAXSCALE 9000
> 
>     CLASS
>         EXPRESSION ( ( [DISPCLASS] = 3 ) )
>         #NAME    "Big City"
>         ...
>     END
> 
>     CLASS
>         EXPRESSION ( ( [DISPCLASS] = 6 ) )
>         #NAME    "Medium City"
>         ...
>     END
> END
> 
> For roads it is very similar, except I have a functional road class to
> work with.
> 
> Joe Bussell
> On Time Systems
> 
> 
>         
> On Wed, Jul 10, 2002 at 12:41:26PM -0700, Seamus Thomas Carroll wrote:
> > Hi,
> > 
> > I am labeling various cities and roads I have the problem of roads and  
> > smaller cities being labelled and the larger cities not being labeled.  
> > All cities are part of the same layer and all roads are part of the same layer.
> > The map file is outlined as follows:
> > 
> > LAYER # road drawing layer
> > 
> >   CLASS 
> >     # highway drawing layer
> >   END
> > 
> >   CLASS
> >     # road drawing layer
> >   END
> > END # end of road drawing layer
> > 
> > LAYER # road label layer
> > 
> >   CLASS
> >     # highways label info
> >   END
> > 
> >   CLASS
> >     # road label info
> >   END
> > END # end of road label layer
> > 
> > 
> > LAYER # city layer
> > 
> >   CLASS 
> >     #Largest city info
> >     #Labeling and drawing of points
> >   END
> > 
> >   CLASS
> >     #Medium city info
> >   END
> > 
> >   CLASS
> >     #Small city info
> >     #Labeling and drawing of points
> >   END
> > END # end of city layer
> > 
> > I want the labeling to go in this order of precedence:
> > 1) larger city
> > 2) small city
> > 3) highway
> > 4) road
> > Any suggestions?
> > 
> > At some zoom levels things look correct and at others they dont.  I have 
> > tried changing the order of the layers and the order of the classes 
> > within the layers.  The FORCE command wont be useful because there are 
> > major cities side by side and I dont want overlap.
> > Thanks for reading this far and any suggestions would be much appreciated.
> > 
> > Seamus
> > 
> > 
>