Hello,<br>
I'm using PHP/MapScript 4.6 and trying to create a layer of points from
a PostGIS database using an arrow pointing in the direction of the
'heading' field in the data table. No matter what I try though, I
get a map with all of the arrows pointing straight up (i.e.
unrotated). My definitions include a TrueType symbol using a
character of an arrow pointing up (I've also tried drawing an arrow as
a Vector symbol with the same results):<br>
<br>
SYMBOL<br>
NAME 'trackarrow'<br>
TYPE TRUETYPE<br>
FONT 'adings'<br>
FILLED false<br>
ANTIALIAS false<br>
CHARACTER 'a'<br>
END<br>
<br>
A layer with the following data source:<br>
<br>
DATA "vessel_coordinate from (select * from archive_v where vessel_id=12) as foo using unique myoid using SRID=-1"<br>
<br>
A class to size, colour and (in theory) rotate the symbol:<br>
<br>
CLASS<br>
SYMBOL 'trackarrow'<br>
SIZE 12<br>
STYLE<br>
COLOR 0 0 0<br>
ANGLEITEM 'heading'<br>
END<br>
END<br>
<br>
I know that the ANGLEITEM line is being read by MapServer because if I
change the name in quotes I get an error that the field doesn't exist,
and if I try putting the field name in square brackets I get parsing
errors, but setup like this I simply get all of the arrows size twelve,
coloured black, but pointing up. The table contains thousands of
records with values in the heading field ranging from 0 to 359.<br>
<br>
Any insight into why the arrows won't rotate and how to make them do so would be greatly appreciated.<br>
Thanks,<br>
Mike<br>