[Mapserver-users] Wind Barbs / Truetype font annotation?

[Joe Bussell]

I had the worst time with creating custom symbols until someone passed 
me a link which suggested that I needed to declare them in a symbolset 
file.  I offer that you should create such a file and reference it in 
your mapfile with the SYMBOLSET <filename> directive.  I believe this is 
reletive to the shape path, but am not totally sure.

Good luck.  If you get something nice I would love to use it for an 
internal project here.

Cordially,

Joe Bussell
On Time Systems
www.trafficdodger.com


Luke Wallace wrote:
> 
> I've been working on the Texas Mesonet project, and am trying to get 
> Wind Barb plots for each of the sites based upon their wind speed and 
> direction.  I've looked through the archives, but the bits of code I've 
> found don't seem to work when combined together.  Below are the 
> important parts of my main mapfile
> 
> SYMBOL
>  NAME 'circle'
>  TYPE ELLIPSE
>  POINTS 1 1 END
>  FILLED TRUE
> END
> 
> SYMBOL
>   NAME 'wind1'
>   TYPE truetype
>   FONT 'Esri_Weather'
>   FILLED true
>   ANTIALIAS true
>   CHARACTER "b"        # symbol number in character map
> end
> 
> #
> # Working Point Layer
> #
> LAYER
>  NAME weather-metar
>  TYPE POINT
>  DATA currentWeather
>  STATUS ON
>  LABELCACHE OFF
>  TOLERANCE 10
>  CLASS
>    NAME 'Weather Stations'
>    COLOR 100 200 164
>    SYMBOL 'circle'
>    SIZE 7
>    TEMPLATE "weather_refresh.html"
>  END
> END
> 
> #
> # Non-working Barb Layer
> #
> LAYER
>  NAME weather-barbs
>   STATUS DEFAULT
>    TRANSFORM FALSE
>    TYPE ANNOTATION
>    DATA currentWeather
>    CLASS
>       EXPRESSION "([WINDSPD] = 0)"
>       SYMBOL 'wind1'
>       SIZE 25
>     COLOR 0 0 0
>    END
> END
> 
> I realize I'm going to need more classes (with more expressions) to get 
> this to be a truly correct barb, but I'm trying to take small steps and 
> just get any symbol to show.
> 
> The following layer in my mapfile puts a single barb in the lower left 
> corner of the map. This shows my fontset is set up correctly (right?).
> 
> LAYER
>    NAME credits
>    STATUS DEFAULT
>    TRANSFORM FALSE
>    TYPE ANNOTATION
>    FEATURE
>      POINTS 4 696 END
>      TEXT 'b'
>    END
>    CLASS
>      LABEL
>        TYPE TRUETYPE
>        FONT Esri_weather
>        SIZE 50
>        ANTIALIAS true
>        COLOR 0 0 0
>        POSITION UR
>      END
>    END
> END
> 
> 
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