How to Construct Railroad Style lines?

[Pericles S. Nacionales]

Bill,

I recommend reading through the symbology reference...  I see that you pointed 
out a link to some symbol examples in one of your earlier posts but had you 
browsed through http://mapserver.gis.umn.edu/docs/reference/symbology/syntax 
or http://mapserver.gis.umn.edu/docs/reference/symbology/notes, you would 
have seen a link to one of the definitive guides to MapServer symbology: 
http://mapserver.gis.umn.edu/docs/howto/cartosymbols

There's at least one example of railroad symbology in that document.  All 
examples are available in a downloadable file, linked within the document.

Cheers!
-Perry

On Friday 29 December 2006 14:17, Bill Thoen wrote:
> It seems that line styles for railroads (i.e. lines that look like
> ---|--|--|--|--) are pretty hard to find in the documentation. I did
> find one googlit on the subject from 2003
> (http://mapserver.gis.umn.edu/data2/wilma/mapserver-users/0302/msg00716.htm
>l) but I can't seem to make it work. The following map file excerpt built
> from that suggestion just seems to produce a simple red line. I don't see
> how this makes the "tie" lie crossways to the track line. Does anyone know
> what I did wrong? Is there a more modern solution?
>
> MAP
>   ...
>   SYMBOL
>       NAME 'line'
>       TYPE ELLIPSE
>       FILLED TRUE
>       POINTS 1 1 END
>    END
>    SYMBOL
>       NAME 'tie'
>       TYPE ELLIPSE
>       FILLED TRUE
>       POINTS 1 1 END
>       STYLE 1 3 END
>    END
> ...
>   LAYER
>       NAME railroads
>       GROUP transportation
>       TYPE LINE
>       STATUS ON
>       CONNECTIONTYPE OGR
>       CONNECTION "railroads.TAB"
>       LABELITEM "Name"
>       CLASS
>          NAME "Railroads"
>          COLOR 255 100 100
>          SYMBOL 'line'
>          SIZE 1
>          OVERLAYSYMBOL 'tie'
>          OVERLAYSIZE 3
>       END
>       PROJECTION
>          "init=epsg:4326"
>       END
>    END
> ...
> END
>
>
> TIA,
> - Bill Thoen

-- 
Perry Nacionales
Dept. of Forest Resources
University of Minnesota
naci0002 at umn.edu