[mapserver-dev] Bug in trunk? layer with object getting rendered by two classes

[Stephen Woodbridge]

It looks like in the full mapfile this is getting rendered via 3 
separate classes. I stripped the other classes to simplify the example 
but here is an image showing it:

http://imaptools.com:8080/dl/drawn-by-multple-classes.png

The red, the yellow and the Orange are each separate classes in this layer.

-Steve

On 4/3/2012 11:41 AM, Stephen Woodbridge wrote:
> Hi all,
>
> I think I have found a weird bug where an objects are getting rendered
> by two classes in a layer, which is counter to my understanding of how
> this should work. Here is the scenario, drawing tiger roads I have a lot
> of class to deal with rendering styles for various categories. I have
> removed a bunch of classes that did not pertain to this issue. In the
> mapfile fragment below I have marked the two classes the are getting
> rendered. The second class has a restricted scale on it that is a
> narrower range that the first class and they have different expressions,
> but I would still expect the object to only be rendered once.
>
> Does this look like a bug? I'll write it up if so. Does this description
> provide enough detail to find the bug in the code. If not I can try to
> make a simplified example.
>
> Thanks,
> -Steve W
>
> LAYER
> NAME "roads"
> METADATA
> "ows_title" "Roadway features"
> "ows_srs" "EPSG:4269 EPSG:4326"
> "ows_abstract" "Road way features from the U.S. Census ROADS data layer."
> END
> TYPE LINE
> TILEINDEX "tidx-ROADS"
> PROJECTION
> "+proj=longlat +ellps=GRS80 +datum=NAD83" #EPSG: 4269
> END
> INCLUDE "map-ROADS.inc"
> END
>
> # map-ROADS.inc
>
> # S1100, 20533, primary
> # S1200, 325140, secondary
> # S1400, 16320345, local
> # S1500, 374859, 4wd trail
> # S1630, 176149, ramp
> # S1640, 176415, service along highway
> # S1710, 17033, walkway
> # S1720, 241, stairway
> # S1730, 72743, alley
> # S1740, 2255679, private
> # S1750, 434084, census use
> # S1780, 10645, parking lot
> # S1820, 2893, bike path
> # S1830, 12, bridle path
>
> MAXSCALEDENOM 500000
> CLASSITEM "RTTYP"
> LABELITEM "FULLNAME"
> SIZEUNITS METERS
> CLASS # <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< this is drawn <<<<<<<<<
> EXPRESSION /^[USC]/
> STYLE
> COLOR "#FFFB89"
> WIDTH 18
> OUTLINECOLOR "#ECD390"
> OUTLINEWIDTH 4 ## make it big to verify this class is drawn ######
> END
> LABEL
> EXPRESSION ('[RTTYP]' = 'U' && '[RTENUM]' ~ '.')
> TEXT '[RTENUM]'
> STYLE
> SYMBOL "U"
> SIZE 20
> MINSIZE 20
> MAXSIZE 20
> END
> SIZE TINY
> POSITION CC
> #OFFSET 1 0
> MINDISTANCE 100
> REPEATDISTANCE 100
> COLOR "#000000"
> PARTIALS FALSE
> PRIORITY 6
> END
> LABEL
> MAXSCALEDENOM 300000
> EXPRESSION ('[RTTYP]' = 'S' && '[RTENUM]' ~ '.')
> TEXT '[RTENUM]'
> STYLE
> SYMBOL "S"
> SIZE 20
> MINSIZE 20
> MAXSIZE 20
> END
> SIZE TINY
> POSITION CC
> MINDISTANCE 100
> REPEATDISTANCE 100
> COLOR "#000000"
> PARTIALS FALSE
> PRIORITY 5
> END
> LABEL
> MAXSCALEDENOM 200000
> TYPE TRUETYPE
> FONT "arial"
> SIZE 16
> MAXSIZE 10
> MINSIZE 8
> COLOR "#816C34"
> OUTLINECOLOR "#FFFB89"
> PARTIALS FALSE
> MINDISTANCE 250
> MINFEATURESIZE 10
> BUFFER 4
> ANGLE FOLLOW
> PRIORITY 7
> END
> END
> CLASS
> MINSCALEDENOM 30000
> EXPRESSION ('[MTFCC]' = 'S1400')
> STYLE
> COLOR "#c1c1a1"
> WIDTH 6
> MINWIDTH 0.5
> END
> END
> CLASS ## <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< this is draw <<<<<<<<<<<<<<<<
> MAXSCALEDENOM 30000
> EXPRESSION ('[MTFCC]' = 'S1400')
> # tried this expression also and it does not filter it out
> #EXPRESSION ('[MTFCC]' = 'S1400' && ! '[RTTYP]' ~ '^[USC]')
> STYLE
> #COLOR "#FFFFFF"
> COLOR "#FF0000" ## make it RED to verify this is also drawn #####
> WIDTH 18
> #MINWIDTH 10
> MAXWIDTH 10
> OUTLINECOLOR "#D8D4C8"
> OUTLINEWIDTH 1.0
> END
> LABEL
> MAXSCALEDENOM 20000
> TYPE TRUETYPE
> FONT "arial"
> SIZE 18
> MAXSIZE 10
> MINSIZE 8
> COLOR "#645C58"
> OUTLINECOLOR "#FFFFFF"
> PARTIALS FALSE
> MINDISTANCE 250
> MINFEATURESIZE 10
> BUFFER 4
> ANGLE FOLLOW
> PRIORITY 7
> END
> END
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