query: wrong results
Franziska Wenzel
fw at urbanix.de
Sat Dec 2 07:17:17 PST 2000
I have still teh same problem:
For testing purposes I've managed to get a map with London Boroughs
(area) and tube stations (points) displayed, on mapserver 3.3.011 for Linux.
But when I do a query on objects, either the borough layer or the tube layer,
I sometimes get wrong results. Tolerance for points is 5 and for area is 1.
Within one borough different results are possible, a right one and wrong
ones which is the neigbouring borough (any direction).
I tested various tolerances, and tested different coordinates
(geographic and rectangular)
Any idea why this happens?
How is the reference done between the dbf-file and the map-objects?
Thanks
Franziska
Here is my map file, it's more or less the file from the ms_demo,
slightly adapted
for my purposes only, so it should work, I guess.
#
# Start of map file
#
NAME DEMO
STATUS ON
SIZE 580 460
SHADESET symbols/shade.sym
LINESET symbols/line.sym
MARKERSET symbols/marker.sym
EXTENT 503900.133726333 155850.12399045 561960.144833978 201720.08577298
UNITS METERS
SHAPEPATH "data"
IMAGECOLOR 255 255 255
#LABELOVERLAP FALSE
#
# Start of web interface definition
#
WEB
HEADER demo_header.html
TEMPLATE demo.html
MINSCALE 1
MAXSCALE 15500000
IMAGEPATH "/home/httpd/html/tmp/"
IMAGEURL "/tmp/"
END
#
# Start of legend
#
LEGEND
KEYSIZE 18 12
LABEL
TYPE BITMAP
SIZE MEDIUM
COLOR 0 0 89
END
STATUS ON
END
#
# Start of scalebar
#
SCALEBAR
IMAGECOLOR 255 255 255
LABEL
COLOR 0 0 0
SIZE SMALL
END
SIZE 350 5
COLOR 255 255 255
BACKGROUNDCOLOR 0 0 0
OUTLINECOLOR 0 0 0
UNITS KILOMETERS
INTERVALS 5
STATUS ON
END
#
# Start of layer definitions
#
LAYER
NAME boroughs
TYPE POLYGON
STATUS DEFAULT
TOLERANCE 1
DATA boroughs
CLASS
SYMBOL 0
OUTLINECOLOR 150 120 10
COLOR 248 248 95
END
QUERY
TEMPLATE boroughs.html
END
END
LAYER
NAME tubestations
TYPE POINT
STATUS DEFAULT
TOLERANCE 5
DATA tubestations
CLASS
SYMBOL 7
SIZE 7
OUTLINECOLOR 150 10 10
COLOR 150 10 10
END
QUERY
TEMPLATE tubes.html
END
END
END # Map File
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