[mapserver-users] symbology showing line direction

[Fawcett, David]

Adam, 
 
I am quite sure that MapServer is not going to read the line topology.
To display direction, you will need to add an attribute for flow
direction and populate it.  You would then use an expression for each
class that combined both the pipe type and the direction.  (Maybe use -1
and 1 for values?)
 
Something like ('[FUNCTION]' = 'Main' AND [DIRECTION] = -1)   
 
I haven't tested this.  Note the difference in quoting for string fields
vs number fields.  
 
David.

	-----Original Message-----
	From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Adam Feidt
	Sent: Friday, February 29, 2008 8:43 AM
	To: Fawcett, David; mapserver-users at lists.osgeo.org
	Subject: RE: [mapserver-users] symbology showing line direction
	
	

	David,

	     Below is my Layer definition.  I've tried a truetype symbol
and label with the ANGLE parameter set to AUTO or FOLLOW.  Neither case
pointed out actual shapefile line direction.  I'm reading an ESRI
shapefile so there is no specific column for line direction.

	 

	LAYER

	            NAME 'Utilities Sanitary Lines'

	            DATA './UtilitiesSanitaryLines.shp'

	            TYPE LINE

	            STATUS DEFAULT

	            CLASSITEM "Function"

	            CLASS

	                  NAME 'Main'

	                  EXPRESSION ""

	                  STYLE

	                    COLOR 85 255 0

	                    SYMBOL "plainline"

	                    SIZE 2

	                  END

	            END # end class

	            CLASS

	                  NAME 'Low Pressure'

	                  EXPRESSION "Low Pressure"

	                  STYLE

	                    COLOR 255 85 0

	                    SYMBOL "plainline"

	                    SIZE 2

	                  END

	            END # end class

	            CLASS

	                  NAME 'Sub Trunk'

	                  EXPRESSION "Sub Trunk"

	                  STYLE

	                    COLOR 85 255 0

	                    SYMBOL "plainline"

	                    SIZE 2

	                  END

	            END # end class

	            CLASS

	                  NAME 'Trunk'

	                  EXPRESSION "Trunk"

	                  STYLE

	                    COLOR 112 168 0

	                    SYMBOL "plainline"

	                    SIZE 2

	                  END

	            END # end class

	            CLASS

	                  NAME 'Force Main'

	                  EXPRESSION "forcemain"

	                  STYLE

	                    COLOR 255 170 0

	                    SYMBOL 'dashed1'

	                    SIZE 2

	                  END

	            END # end class

	            CLASS

	                  NAME 'Private'

	                  EXPRESSION "private"

	                  STYLE

	                    COLOR 161 33 240

	                    SYMBOL 'plainline'

	                    SIZE 2

	                  END

	            END # end class

	      END #end layer

	 

	 

	Adam M. Feidt

	GIS Coordinator

	City of Eden Prairie

	8080 Mitchell Rd

	Eden Prairie, MN 55344

	phone# 952-949-8443

	fax# 952-949-8334

	 

	From: Fawcett, David [mailto:David.Fawcett at state.mn.us] 
	Sent: Friday, February 29, 2008 8:19 AM
	To: Adam Feidt; mapserver-users at lists.osgeo.org
	Subject: RE: [mapserver-users] symbology showing line direction

	 

	Adam, 

	 

	What does your layer definition, with the classes look like?

	 

	Does your data have the direction column properly populated for
all records?  

	 

	David.

		-----Original Message-----
		From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Adam Feidt
		Sent: Friday, February 29, 2008 8:14 AM
		To: mapserver-users at lists.osgeo.org
		Subject: [mapserver-users] symbology showing line
direction

		      I'm working in a GeoMoose application and trying
to display utility lines with the correct line direction via some arrow
character or symbol.  I've had no luck so far.  I've successfully
labeled my lines with a truetype font character by defining the TEXT ">"
parameter in the CLASS object.  I've also tried a pixelmap symbol
definition using a .gif file.  Both appear to work at first, but when
you compare it to the actual line direction it isn't true in all cases.
Has anybody found a way to accomplish this?  I would appreciate if you
could send me any examples.

		 

		 

		Adam M. Feidt

		GIS Coordinator

		City of Eden Prairie

		8080 Mitchell Rd

		Eden Prairie, MN 55344

		phone# 952-949-8443

		fax# 952-949-8334

		 

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