REQUIRES syntax in Mapfile

[Mike Saunt]

Neil

Another good one is REQUIRES "![LayerName]"

I use this alot to have a base vector layer not draw if Aerial Photography
is shown...

Cheers
Mike


On 04/02/2008, Neil Fincham <neil at asdf.co.nz> wrote:
>
> Hi All,
>
>        Quick question today, what is the correct syntax for the REQUIRES
> tag
> in the mapfile?  I have tried "REQUIRES ([OtherRoad] = 1)" (I.E, the
> layer OtherRoad must be on for the layer to display) and a few other
> things and I don't seem to be getting any joy.  I have included the map
> layer definitions below;-
>
> LAYER
>    NAME 'OtherRoad'
>    TYPE LINE
>    CONNECTIONTYPE postgis
>    CONNECTION 'host=localhost user=postgres dbname=NZMM'
>    DATA 'the_geom FROM public.road_all_layer2_polyline'
>    METADATA
>      'wms_title' 'OtherRoad'
>    END
>    MAXSCALE 15000
>    STATUS ON
>    LABELITEM "road_name"
>    TRANSPARENCY 100
>    CLASS
>      NAME 'Road - Other'
>      STYLE
>        SYMBOL road-line
>        SIZE 1
>        COLOR 0 0 0
>      END
>    END
> END
>
> LAYER
>    NAME 'MinorRuralRoad'
>    TYPE LINE
>    CONNECTIONTYPE postgis
>    CONNECTION 'host=localhost user=postgres dbname=NZMM'
>    DATA 'the_geom FROM public.road_all_layer2_polyline'
>    METADATA
>      'wms_title' 'MinorRuralRoad'
>    END
>    MAXSCALE 15000
>    STATUS ON
>    LABELITEM "road_name"
>    TRANSPARENCY 100
>    REQUIRES ([OtherRoad] eq 1)
>    CLASS
>      NAME 'Minor Rural Road'
>      EXPRESSION ("[class]" = "MINOR RURAL ROAD")
>      LABEL
>        COLOR  0 0 0
>        FONT sans
>        TYPE truetype
>        SIZE 6
>        POSITION AUTO
>        PARTIALS FALSE
>        ANGLE FOLLOW
>        BUFFER 10
>        OUTLINECOLOR 255 255 255
>      END
>        STYLE
>        SYMBOL road-line
>        SIZE 6
>        COLOR 0 0 0
>      END
>      STYLE
>        SYMBOL road-line
>        SIZE 5
>        COLOR 255 0 255
>      END
>    END
> END
>
> Thanks Heaps
>
>
> Neil
>
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