Hi Christy,
I am not sure what is happening in your case. When I tested and
documented, I included my full working mapfile here:
http://www.mapserver.org/trunk/mapfile/union.html#mapfile-example
If you structure your test mapfile the same, does your issue still occur?
-jeff
--
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/
On 11-05-03 1:46 PM, Christy Nieman wrote:
Hello,
I was wondering if someone could let me know if my logic here is flawed...
I am testing layers of TYPE UNION. I have two point data files and if I
have classes in the UNION'ed layer, they draw correctly. E.g.:
# ==================================================
# Layer: Layer 1 for union
# ==================================================
LAYER
NAME "layer_1_for_union"
STATUS OFF
TYPE POINT
SIZEUNITS PIXELS
DATA "points1"
END
# ==================================================
# Layer: Layer 2 for union
# ==================================================
LAYER
NAME "layer_2_for_union"
STATUS OFF
TYPE POINT
SIZEUNITS PIXELS
DATA "points2"
END
# ==================================================
# Layer: UNION Layer
# ==================================================
LAYER
NAME "union_layer"
STATUS DEFAULT
TYPE POINT
SIZEUNITS PIXELS
CONNECTIONTYPE UNION
CONNECTION "layer_1_for_union,layer_2_for_union"
PROCESSING "ITEMS=TYPE,ELEV"
CLASS
NAME "At 4ft or lower"
EXPRESSION ([ELEV] <= 4)
STYLE
SYMBOL 'circle'
COLOR 0 255 0
SIZE 15
END
END
CLASS
NAME "Above 4ft"
EXPRESSION ([ELEV] <= 100)
STYLE
SYMBOL 'circle'
COLOR 0 255 255
SIZE 15
END
END
CLASS
NAME "Other"
STYLE
SYMBOL 'circle'
COLOR 180 180 180
SIZE 15
END
END
END
However, if I have styling in the source layers (i.e. layer_1_for_union
and layer_2_for_union) and use STYLEITEM "AUTO" in the union layer, the
two source layers must have STATUS DEFAULT for anything to show up
(which, I think, causes them to be drawn twice?).
Am I missing something with how UNIONs and STYLEITEM "AUTO" work? Or is
this how it was designed?
Thanks,
Christy
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