[mapserver-users] Abandoned railroad symbol

[Havard Tveite]

Dear Bob,

Mapserver does not allow sensible styling of dashed lines with for
instance point symbols.
To be able to do this, a new mechanism will have to be introduced
(for instance INITIALGAP, as used in the SLD specification).  This
is what Mapserver ticket #3879 suggests.
http://trac.osgeo.org/mapserver/ticket/3879

Advanced styling of lines with point symbols is also hampered by the
strange calculation of GAP in Mapserver, as reported in ticket #3867.
GAP should, in my opinion, specify the centre to centre distance
between the point symbols.
http://trac.osgeo.org/mapserver/ticket/3867

Håvard Tveite

On 9/22/2011 6:14 PM, Bistrais, Bob wrote:
> Hmm, still not getting the spacing correct.  The crossties seem to be at a consistent interval, but the dashed centerline isn't spacing well- sometimes I get ties centered on the line (which is whaat I want), and sometimes the ties are at the end of a dash.
>
> -----Original Message-----
> From: thomas bonfort [mailto:thomas.bonfort at gmail.com]
> Sent: Thursday, September 22, 2011 11:21 AM
> To: Bistrais, Bob
> Cc: mapserver-users at lists.osgeo.org
> Subject: Re: [mapserver-users] Abandoned railroad symbol
>
> SYMBOL
>    NAME "tie"
>    TYPE TRUETYPE
>    FONT "path/to/arial.ttf"
>    CHARACTER "|"
> END
>
>
> CLASS
>      EXPRESSION ('[STATUS]' = '3')
> # The crossties:
>      STYLE
>        COLOR 200 200 200
>        SIZE 4
>        SYMBOL "tie"
>        GAP -10
>      END
> # The centerline:
>      STYLE
>        COLOR 200 200 200
>        WIDTH 1
>        PATTERN
>          5 10
>        END
>      END
>
>    END
>
> On Thu, Sep 22, 2011 at 17:15, Bistrais, Bob<Bob.Bistrais at maine.gov>  wrote:
>> I've been playing around with the symbology but I'm not getting my spacing
>> right.  I'm trying to create a symbol for abandoned railroad track, looks
>> like the standard RR symbol, a line with the crossties, but dashed.  Here is
>> my code.  Problem is, although I get a dashed line and the crossties, the
>> interval isn't correct, and I was wondering if anyone had advice on making
>> it more consistent so the crossties are always on the dashed line:
>>
>>
>>
>>    CLASS
>>
>>      EXPRESSION ('[STATUS]' = '3')
>>
>> # The crossties:
>>
>>      STYLE
>>
>>        COLOR 200 200 200
>>
>>        WIDTH 4
>>
>>        LINECAP BUTT
>>
>>        ANGLE 90
>>
>>        PATTERN
>>
>>          1 10
>>
>>        END
>>
>>      END
>>
>> # The centerline:
>>
>>      STYLE
>>
>>        COLOR 200 200 200
>>
>>        WIDTH 1
>>
>>        PATTERN
>>
>>          5 10
>>
>>        END
>>
>>      END
>>
>>
>>
>>    END
>>