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Ian,<br>
<br>
Using the "standard" capabilities of a POINT layer wouldn't work?<br>
<br>
<pre class="moz-signature" cols="72">Best Regards,
Brent Fraser</pre>
<br>
On 12/11/2011 3:06 PM, Ian Walberg wrote:
<blockquote
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Brent,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Ok,
we had been using an earlier version of the mapserver
documentation we had downloaded which had the text below.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
latest version now describes the discussed functionally more
closely.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We
had been looking at using the previous functionally to draw
and rotate a symbol around the label text. Not what we are
thinking but this could be used for something like
displaying the wind speed and symbol rotated for the wind
direction using a symbol around the outside.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">To
do this it sounds like a new GEOMTRANSFORM type.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Ian<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">STYLE
The start of a STYLE object.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Label
specific mechanisms of the STYLE object are the
GEOMTRANSFORM options:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">GEOMTRANSFORM
[labelpnt|labelpoly] Creates geometries that can be used for
styling the label.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">•
labelpnt generates a point with its center at the middle of
the bounding rectangle of the text.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">•
labelpoly generates the bounding rectangle for the text,
with 1 pixel of padding added in all directions.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
resulting geometries can be styled using the mechanisms
available in the STYLE object.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">New
in version 6.0.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US"> Brent Fraser
[<a class="moz-txt-link-freetext" href="mailto:bfraser@geoanalytic.com">mailto:bfraser@geoanalytic.com</a>] <br>
<b>Sent:</b> Sunday, December 11, 2011 1:52 PM<br>
<b>To:</b> Ian Walberg<br>
<b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [mapserver-users] GEOMTRANSFORM
LABELPNT example<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Ian,<br>
<br>
No, there is no ability to do that, unless you use POSITION
CC. There had been some discussion several months ago to add
functions to the GEOMTRANSFORM resulting in RFC 72 (<a
moz-do-not-send="true"
href="http://www.mapserver.org/development/rfc/ms-rfc-72.html">http://www.mapserver.org/development/rfc/ms-rfc-72.html</a>)<br>
<br>
I think something like <br>
<br>
GEOMTRANSFORM (getCentroid(labelpoly))<br>
<br>
would be a good addition, but I don't have a specific
use-case. What were you planning to do the center of the
label polygon?<br>
<br>
<o:p></o:p></p>
<pre>Best Regards,<o:p></o:p></pre>
<pre>Brent Fraser<o:p></o:p></pre>
<p class="MsoNormal"><br>
On 12/11/2011 2:18 PM, Ian Walberg wrote: <o:p></o:p></p>
<pre>So is it expected that labelpnt generates a point with its center at the middle of the bounding rectangle of the text?<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Thanks<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Ian<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre>-----Original Message-----<o:p></o:p></pre>
<pre>From: <a moz-do-not-send="true" href="mailto:mapserver-users-bounces@lists.osgeo.org">mapserver-users-bounces@lists.osgeo.org</a> [<a moz-do-not-send="true" href="mailto:mapserver-users-bounces@lists.osgeo.org">mailto:mapserver-users-bounces@lists.osgeo.org</a>] On Behalf Of Brent Fraser<o:p></o:p></pre>
<pre>Sent: Sunday, December 11, 2011 1:02 PM<o:p></o:p></pre>
<pre>To: thomas bonfort<o:p></o:p></pre>
<pre>Cc: <a moz-do-not-send="true" href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><o:p></o:p></pre>
<pre>Subject: Re: [mapserver-users] GEOMTRANSFORM LABELPNT example<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Thomas,<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre> I tracked it down to the LABELCACHE setting.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>LABELCACHE ON gives the expected results LABELCACHE OFF gives my old blue-dot-on-the-left results.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>See attached PDFs.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Best Regards,<o:p></o:p></pre>
<pre>Brent Fraser<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre>On 12/11/2011 1:05 PM, thomas bonfort wrote:<o:p></o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>There might have been a bug in the initial implementation. trying it <o:p></o:p></pre>
<pre>out with current trunk gives me the expected result, unless I'm <o:p></o:p></pre>
<pre>missing something.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre>On Sun, Dec 11, 2011 at 20:44, Brent Fraser<a moz-do-not-send="true" href="mailto:bfraser@geoanalytic.com"><bfraser@geoanalytic.com></a> wrote:<o:p></o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>Thomas,<o:p></o:p></pre>
<pre> See comments below.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Best Regards,<o:p></o:p></pre>
<pre>Brent Fraser<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre>On 12/11/2011 12:26 PM, thomas bonfort wrote:<o:p></o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>I think this is all expected behavior, although the documentation <o:p></o:p></pre>
<pre>may be incorrect.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>LABELPNT draws a marker on the geographic position the label is <o:p></o:p></pre>
<pre>attached to. This corresponds to the center of the label text only <o:p></o:p></pre>
<pre>if the label is in position CC.<o:p></o:p></pre>
</blockquote>
<pre>I think that is what is intended but my original test case (using CC <o:p></o:p></pre>
<pre>) resulted in the LABELPNT rendered on the left side of the <o:p></o:p></pre>
<pre>labelpoly, see <a moz-do-not-send="true" href="http://lists.osgeo.org/pipermail/mapserver-dev/attachments/20110526/47c9bc8c/labelpnt-0001.png">http://lists.osgeo.org/pipermail/mapserver-dev/attachments/20110526/47c9bc8c/labelpnt-0001.png</a>.<o:p></o:p></pre>
<pre> I had expected it to be coincident with the yellow circle and green cross.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>To draw a label at the center of the label text, another <o:p></o:p></pre>
<pre>geomtransform would have to be implemented, named e.g. LABELBBOXCENTROID.<o:p></o:p></pre>
</blockquote>
<pre>or maybe<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>GEOMTRANSFORM (centroid([LABELPOLY]))<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>regards,<o:p></o:p></pre>
<pre>thomas<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>On Sun, Dec 11, 2011 at 19:34, Brent Fraser<a moz-do-not-send="true" href="mailto:bfraser@geoanalytic.com"><bfraser@geoanalytic.com></a><o:p></o:p></pre>
<pre> wrote:<o:p></o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>Hey Jeff,<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre> I've been looking into this too (not finished yet). I'm using <o:p></o:p></pre>
<pre>v6.0.1 and can reproduce my original results (blue dot to the left) <o:p></o:p></pre>
<pre>AND Ian's (grey dot coincident with white dot). Very strange. My <o:p></o:p></pre>
<pre>shapefile dataset gets reprojected from geographic to UTM, so that <o:p></o:p></pre>
<pre>may be causing the difference.<o:p></o:p></pre>
<pre> I need to look into that...<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Best Regards,<o:p></o:p></pre>
<pre>Brent Fraser<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre>On 12/11/2011 10:57 AM, Jeff McKenna wrote:<o:p></o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>On 11-12-11 11:20 AM, Ian Walberg wrote:<o:p></o:p></pre>
<blockquote
style="margin-top:5.0pt;margin-bottom:5.0pt">
<pre>Here is the map file we are using ms4w 3.0.3.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>We thought the larger grey circle should be drawn in the center <o:p></o:p></pre>
<pre>of the label text.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>What have we done wrong?<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
</blockquote>
<pre>I have done some testing on this on Windows, with MapServer trunk <o:p></o:p></pre>
<pre>(6.1-dev), here are my findings:<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>- I used Brent's original example styles (from<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><a moz-do-not-send="true" href="http://osgeo-org.1803224.n2.nabble.com/GEOMTRANSFORM-labelpnt-location-td6408065.html">http://osgeo-org.1803224.n2.nabble.com/GEOMTRANSFORM-labelpnt-location-td6408065.html</a>)<o:p></o:p></pre>
<pre>with Ian's FEATURE layer --> Brent's "Blue Dot" LABELPNT with POSITION<o:p></o:p></pre>
<pre>CC is<o:p></o:p></pre>
<pre>now correctly placed in the center of the label text (so it seems <o:p></o:p></pre>
<pre>this has been fixed in the code, but I can't find the ticket that <o:p></o:p></pre>
<pre>says that)<o:p></o:p></pre>
<pre>- If I change to POSITION LR (as in Ian's example layer) then I <o:p></o:p></pre>
<pre>get Ian's issue (LABELPNT is placed at the geometry location, not <o:p></o:p></pre>
<pre>in the center of the label text<o:p></o:p></pre>
<pre>- but this is now an issue of understanding the developer's logic <o:p></o:p></pre>
<pre>(from that thread SteveL says "Let me ponder this and get back to <o:p></o:p></pre>
<pre>you. I think it makes sense to use the label point geotransform <o:p></o:p></pre>
<pre>only with position CC so that it matches actual shape location.")<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>That's all I know at this point (ha pun).<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>-jeff<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
<pre><o:p> </o:p></pre>
</blockquote>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>mapserver-users mailing list<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><o:p></o:p></pre>
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</blockquote>
</blockquote>
<pre><o:p> </o:p></pre>
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<pre>_______________________________________________<o:p></o:p></pre>
<pre>mapserver-users mailing list<o:p></o:p></pre>
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