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<DIV dir=ltr align=left><SPAN class=678503613-11102006><FONT face=Arial
color=#0000ff size=2>Sorry, I was under the impression that the overposting
stuff could be turned off for all types of geometries. Turns out that's not the
case. Well, one way around this (and a painful one) might be to generate a
point layer with the centroid of each polygon and use that point layer to
display labels. I am not sure if this is worth trying out, since the results
aren't guaranteed...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=678503613-11102006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=678503613-11102006><FONT face=Arial
color=#0000ff size=2>Traian</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Jackie Ng
[mailto:jackie.ng@aecsystems.com.au] <BR><B>Sent:</B> Tuesday, October 10, 2006
8:36 PM<BR><B>To:</B> users@mapguide.osgeo.org<BR><B>Cc:</B> Traian
Stanev<BR><B>Subject:</B> RE: [mapguide-users] Erratic display of feature
labels<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=372222800-11102006><FONT face=Arial
size=2>Hi Traian,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=372222800-11102006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=372222800-11102006><FONT face=Arial size=2>I
would like to try your first solution (turn off overpost detection) but the
layer in question is a polygon layer with area styles. There is no option
available to turn off overposting.</FONT></SPAN></DIV>
<DIV align=left>
<P align=left><FONT face="Lucida Sans Unicode" size=2>Regards,</FONT></P>
<P align=left><FONT face="Lucida Sans Unicode" size=2>Jackie Ng</FONT></P>
<P align=left><FONT face="Lucida Sans Unicode" color=#0000ff size=2>AEC Spatial
Pty Ltd. / AEC Systems Pty Ltd.</FONT><BR><SPAN lang=en-au><FONT
face="Lucida Sans Unicode" color=#0000ff size=2>SYDNEY - MELBOURNE - BRISBANE -
PERTH - ADELAIDE - HOBART</FONT></SPAN> <SPAN lang=en-au><FONT
face="Lucida Sans Unicode" color=#0000ff size=2><FONT size=2></P>
<P>A.B.N: 32 075 809 451</P></FONT></FONT></SPAN>
<P><SPAN lang=en-au><FONT face="Lucida Sans Unicode" color=#0000ff size=2>Level
4, 37-41 Prospect St. Box Hill, Victoria, 3128</FONT></SPAN></P>
<P><SPAN lang=en-au><FONT face="Lucida Sans Unicode" size=2>Phone: 1300 368
609</FONT></SPAN> <BR><SPAN lang=en-au><FONT face="Lucida Sans Unicode"
size=2>Fax: 1300 362 140</FONT></SPAN> </P>
<P><SPAN lang=en-au><FONT face="Lucida Sans Unicode"
size=2>www.aecsystems.com.au</FONT></SPAN> <BR><FONT face=Arial size=2><A
href="mailto:jackie.ng@aecsystems.com.au">jackie.ng@aecsystems.com.au</A></FONT></P></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV><FONT face=Arial
color=#0000ff size=2></FONT><FONT face=Arial color=#0000ff size=2></FONT><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Traian Stanev
[mailto:traian.stanev@autodesk.com] <BR><B>Sent:</B> Tuesday, 10 October 2006
11:51 PM<BR><B>To:</B> users@mapguide.osgeo.org<BR><B>Subject:</B> RE:
[mapguide-users] Erratic display of feature labels<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff
size=2></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff
size=2></FONT> </DIV>
<DIV dir=ltr align=left><SPAN class=932244413-10102006><FONT face=Arial
color=#0000ff size=2>This is caused by, how can I say it, impefections, in the
label occlusion avoidance algorithm. The problems happen especially when text is
rotated, in which case the bounding box used to compute the region covered by
the label is no longer tight. This, combined with the fact as new features
appear on the map, the order labels get processed changes, causes the behavior
you describe. So it is currently normal for some labels to disappear and appear
depending on the view. One solution I could offer is to turn off label overpost
detection for the layer -- there is a checkbox for that in Studio, in the style
dialog -- this would cause all labels to draw. Another solution would be to use
a tiled map, which would result in a more fixed labeling, but then some labels
may just never show up. A third solution may be to use a smaller font so that
more labels fit. A fourth solution is for us to improve the labeling to deal
with non-axis-aligned bounds. :-)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=932244413-10102006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=932244413-10102006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=932244413-10102006><FONT face=Arial
color=#0000ff size=2>Traian</FONT></SPAN></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff
size=2></FONT> </DIV><FONT face=Arial color=#0000ff size=2></FONT><FONT
face=Arial color=#0000ff size=2></FONT><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Jackie Ng
[mailto:jackie.ng@aecsystems.com.au] <BR><B>Sent:</B> Tuesday, October 10, 2006
4:30 AM<BR><B>To:</B> users@mapguide.osgeo.org<BR><B>Subject:</B>
[mapguide-users] Erratic display of feature labels<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>Hi
All,</FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>I am experiencing a
very strange problem with the display of feature labels. Basically the map is
only showing a subset of all the feature labels that are actually there. At
closer zoom levels, when I am panning around on my map, some labels will
magically disappear while some will magically appear. The attached images will
better explain the problem. </FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>The "before" image a
partcular close-up view of the map. </FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>The "after" image is
the same view, panned slightly to the right. </FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>The "after-more"
image is the "after" view panned slightly up.</FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>The selected polygon
in blue is the same polygon for all 3 images.</FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>Notice how some
labels disappear and some appear during these transitions? </FONT></SPAN></DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=634251708-10102006><FONT face=Arial size=2>Help me
:(</FONT></SPAN></DIV>
<DIV align=left>
<P align=left><FONT face="Lucida Sans Unicode" size=2>Regards,</FONT></P>
<P align=left><FONT face="Lucida Sans Unicode" size=2>Jackie Ng</FONT></P>
<P align=left><FONT face="Lucida Sans Unicode" color=#0000ff size=2>AEC Spatial
Pty Ltd. / AEC Systems Pty Ltd.</FONT><BR><SPAN lang=en-au><FONT
face="Lucida Sans Unicode" color=#0000ff size=2>SYDNEY - MELBOURNE - BRISBANE -
PERTH - ADELAIDE - HOBART</FONT></SPAN> <SPAN lang=en-au><FONT
face="Lucida Sans Unicode" color=#0000ff size=2><FONT size=2></P>
<P>A.B.N: 32 075 809 451</P></FONT></FONT></SPAN>
<P><SPAN lang=en-au><FONT face="Lucida Sans Unicode" color=#0000ff size=2>Level
4, 37-41 Prospect St. Box Hill, Victoria, 3128</FONT></SPAN></P>
<P><SPAN lang=en-au><FONT face="Lucida Sans Unicode" size=2>Phone: 1300 368
609</FONT></SPAN> <BR><SPAN lang=en-au><FONT face="Lucida Sans Unicode"
size=2>Fax: 1300 362 140</FONT></SPAN> </P>
<P><SPAN lang=en-au><FONT face="Lucida Sans Unicode"
size=2>www.aecsystems.com.au</FONT></SPAN> <BR><FONT face=Arial size=2><A
href="mailto:jackie.ng@aecsystems.com.au">jackie.ng@aecsystems.com.au</A></FONT></P></DIV>
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