Hi Bart,
may be this is what you are looking for:
From the map file documentation:
LABEL
...
POSITION [ul|uc|ur|cl|cc|cr|ll|lc|lr|auto]
Position of the label relative to the labeling point (layers only). First
letter is Y position, second letter is X position. Auto tells MapServer
to calculate a label position that will not interfere with other labels. With
points, MapServer selects from the 8 outer positions (i.e. excluding cc). With
polygons, MapServer selects from cc (added in MapServer 5.4), uc, lc, cl and cr
as possible positions. With lines, it only uses lc or uc, until it finds a
position that doesn't collide with labels that have already been drawn. If all
positions cause a conflict, then the label is not drawn (Unless the label's
FORCE a parameter is set to true). Auto placement is only available with
cached labels.
Regards,
Andreas
-Ursprüngliche Nachricht-
Von: mapserver-users-boun...@lists.osgeo.org
[mailto:mapserver-users-boun...@lists.osgeo.org] Im Auftrag von Bart van den
Eijnden (OSGIS)
Gesendet: Dienstag, 21. Juni 2011 15:55
An: Robert Hollingsworth
Cc: mapserver-users@lists.osgeo.org
Betreff: Re: [mapserver-users] Re: symbol position moving when using angle
Hi Robert,
thanks for your answer, indeed that must be the explanation.
However, the ESRI software (ArcMap in this case) is doing what we expect
with the same true type font.
Best regards,
Bart
looks to me like the 'base point' around which the symbol is defined in
terms
of x-y position, and therefore around which the thing will rotate -- is to
the lower-left of the visible exclamation mark:
#
#
#
#
x rotates around this
while you really want something like:
#
#
# rotates around this point
#
I'm guessing this is the normal case for most ttf's? Can you find or
create a ttf char that is defined like the second case? Otherwise
probably need to use a bitmap or just block out what you need with
mapserver vector symbology
Robert
==
original msg
==
Hi list,
hopefully someone can explain the following issue to me.
I am using a vector symbol (ttf), and when using no angle, it is
positioned correctly.
However, when I use ANGLE on the STYLE (using an attribute in the
dataset), things get weird and the symbol position changes.
Image brous4.png (no rotation in Mapserver, red exclamation marks are
Mapserver, black exclamation marks are ArcMap, blue dot is the same
Mapserver layer using a circle symbol to display the location):
http://www.osgis.nl/download/mapserver/brous4.png
Image brous3.png, now we rotate the symbols in Mapserver, but their
location is moving (a simple OFFSET does not seem to be a possible
solution however):
http://www.osgis.nl/download/mapserver/brous3.png
TIA for any guidance.
Best regards,
Bart
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