*About Arrowhead problem:*
* *
*I am working on a GIS project & need to show directions(one way direction)
along a section of a road or highway. I need to show regularly spaced arrows
along the line segment.*
* *
*Problem: Creation of arrowhead*
*I am creating arrowhead symbol to be derived from a TrueType font. So my
symbol file looks like:*
* *
*SYMBOL*
*NAME "one_way_from"*
*TYPE truetype*
*FONT arial-bold*
*CHARACTER ">"*
*#FONT "Wingdings"*
*#CHARACTER "รจ"*
*GAP -40*
*END *
* *
* *
*SYMBOL*
*NAME "one_way_to"*
*TYPE truetype*
*FONT arial-bold*
*CHARACTER "<"*
*#FONT "Wingdings"*
*#CHARACTER "&#???;"*
*GAP -40*
*END *
* *
*And I have created a separate Layer just to display the arrowhead on the
road, which looks like this: *
*LAYER*
* GROUP "Basemap"*
* NAME "major road direction"*
* CONNECTIONTYPE databasetype*
* CONNECTION connection_string*
* DATA "query_to_be_executed"*
* *
* CLASSITEM "ONEWAYDIRECTION"*
* TYPE Line*
* STATUS ON*
* *
* CLASS*
* NAME "From"*
* EXPRESSION *([ONEWAYDIRECTION] = 1) **
* STYLE*
* SYMBOL "one_way_from"*
* COLOR 0 0 0*
* SIZE 6*
* END *
* END*
* *
* CLASS*
* NAME "To"*
* EXPRESSION *([ONEWAYDIRECTION] = 0) **
* STYLE*
* SYMBOL "one_way_to"*
* COLOR 0 0 0*
* SIZE 6*
* END*
* END *
* *
* END # Layer*
*Where ONEWAYDIRECTION is a column in my road named table, having 0 or 1
value.*
* And the Road layer looks like this:*
*LAYER*
* NAME "major road"*
* CONNECTIONTYPE database_type*
* CONNECTION "username/password"*
* DATA "query_to_be_executed"*
* CLASSITEM "ROADCLASS"*
* LABELITEM "STREETNAME"*
* TYPE Line*
* STATUS ON*
* CLASS*
*NAME "MAJOR-ROADS"*
*MAXSCALE 3*
*MINSCALE 7000*
*EXPRESSION ([ROADCLASS] <= 5 )*
* *
* *
* style *
* *
* color 255 192 203*
* #color 246 191 0*
* width 9 *
* antialias true*
* end*
* *
*style*
* *
* color 255 192 203*
* #color 255 222 0*
* width 8*
* antialias true*
* end*
* *
*END # Layer*
* *
*Now on executing this, I am only getting road on my screen. I am not
getting the arrows along with road. Please see where I am doing mistake &
let me know about it.*
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