[mapserver-users] symbology showing line direction

[G. Allegri]

Adam, you gave me a little doubt abotu shp line directions and Mapserver...

Could you try to use a simble like this?

SYMBOL

    NAME "arrow"
    TYPE TRUETYPE
    FONT verdana
    CHARACTER '&\#62;' # don't use the backslash! (the verdana greater
than tag)
    FILLED true
    ANTIALIAS true
    GAP -10 # the negatation tells MapServer to honor the vector
direction when computing the angle

END

and use it in the STYLE of the layer CLASS

Put attention on the GAP parameter

2008/2/29, Adam Feidt <afeidt at edenprairie.org>:
> I was hoping it could read ESRI's From and To node structure much like
>  ArcMap, but by the sounds of it that isn't possible. Shapefile geometry
>  is saved in the Shape column, which I'm guessing is useless in
>  Mapserver.  What you're saying is I need to create an attribute and
>  populate it with the angle of the line and use that to define my label
>  direction?
>
>
>  Adam M. Feidt
>  GIS Coordinator
>  City of Eden Prairie
>  8080 Mitchell Rd
>  Eden Prairie, MN 55344
>  phone# 952-949-8443
>  fax# 952-949-8334
>
>
>
> -----Original Message-----
>  From: G. Allegri [mailto:giohappy at gmail.com]
>  Sent: Friday, February 29, 2008 8:57 AM
>  To: Adam Feidt
>  Cc: Fawcett, David; mapserver-users at lists.osgeo.org
>  Subject: Re: [mapserver-users] symbology showing line direction
>
>  A question: how can you derive a line direction by a shp without
>  having an appropriate attribute?
>
>  Giovanni
>
>  2008/2/29, Adam Feidt <afeidt at edenprairie.org>:
>  >
>  >
>  >
>  >
>  > 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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>  >
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>
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