Ruby mapscript oddness

[The Cunctator]

Here.... ruby chokes on the EXPRESSION. (For example, EXPRESSION (25>0)
works.)

MAP
  NAME "Election Results"
  STATUS ON
  EXTENT -2450520 -1730156 2332934 1953725
  SIZE 600 450
  SHAPEPATH "./data"
  SYMBOLSET "./etc/symbols.sym"
  FONTSET "./etc/fonts.txt"
  IMAGETYPE PNG
  IMAGECOLOR 255 255 255
  UNITS METERS
  #
  # Start of OutputFormat object
  #
  OUTPUTFORMAT
    NAME "png"
    MIMETYPE "image/png"
    DRIVER "GD/PNG"
    EXTENSION "png"
    IMAGEMODE PC256
    TRANSPARENT FALSE
  END
#
# Start of layer definitions
#
  LAYER
    NAME "House of Representatives"
    GROUP "House of Representatives"
    STATUS ON
    DATA "the_geom FROM (SELECT state, seatnumber, gid, the_geom,
  round(cast(dempct*100 as numeric),2) as dempct
                           from cds
          ) a using unique gid using srid=-1"
    TYPE POLYGON
    CONNECTIONTYPE POSTGIS
    CONNECTION "user=user dbname=cd host=host"
    UNITS METERS
    LABELITEM "seatnumber"
    LABELMAXSCALE 4000000
    TEMPLATE "newtemplate.html"
    CLASSITEM "dempct"
    CLASS
      NAME "Democrat"
      EXPRESSION ([dempct] > 25)
      STYLE
        SYMBOL 11
        COLOR 0 0 255
        OUTLINECOLOR 0 0 0
        SIZE 1
      END
    END
    CLASS
      STYLE
        SYMBOL 7
        COLOR 0 0 0
        OUTLINECOLOR 0 0 0
        SIZE 1
      END
    END
  END
END



On 11/17/06, Steve Lime <Steve.Lime at dnr.state.mn.us> wrote:
>
> The mapfile would help...
>
> >>> The Cunctator <cunctator at GMAIL.COM> 11/17/2006 1:09:48 PM >>>
> I'm happy to give settings/sample files etc but maybe someone has some
> idea
> what my problem is -- I'm guessing it has to do with the installation.
>
> The following script:
>
> #!/usr/bin/env ruby
>
> require "mapscript"
> include Mapscript
>
> map=MapObj.new("test.map")
> image = map.draw
> image.save('test.png')
>
> fails:
>
> in `draw': msEvalExpresssion: Expression parser error. Failed to parse
> expression;msyyparse(): Expression parser error. syntax
> error;msEvalExpression: Expression parser error. Failed to parse
> expression;msyyparse():
> ...
>
> etc.
>
> whereas the php script
>
> <?php
> if(!extension_loaded("MapScript")) {
>    dl('php_mapscript.'.PHP_SHLIB_SUFFIX);
> }
>
> $map = ms_newMapObj("test.map");
>
> $image = $map->draw();
> $image->saveImage('test.png');
>
> ?>
>
> works fine.
>
> map.drawLegend
> and
> map.drawScalebar
> work fine.
>
> Anyone have thoughts or what information would people need to
> diagnose?
>
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