[mapserver-users] Mapscript shapeObj->toWKt() or ms_shapeObjfromWkt problem.

[Edmar Moretti]

I had the same problem. The solution was to change the Mapserver, before 
compiling, to use the "OGR" instead of "GEOS" in the routine generation 
of WKT

Moen, Paul T. escreveu:
> I changed my Geos to version 3.0.3 and the error changed from 
> "Segmentation fault" to "Bus error".
> I also looked at the ticket Assefa indicated below and am wondering if 
> that was related to the buffer or to the same problem I am having? 
>  The script I am having problems does nothing more than create a new 
> shape object from a wkt and then re-output the wkt from the shape 
> object.  The object seems to be created fine, because I can get the 
> number of lines with $drawnShp->numlines.  I can also create a new 
> shape object with the other shape object constructer as follows and 
> the output works.
>
> <?php
>     dl('php_mapscript.so');
>     $drawnShp = ms_newShapeObj(MS_SHAPE_POLYGON);
>     $line = ms_newLineObj();
>     $line->addXY(1207657,478875);
>     $line->addXY(1208230,478275);
>     $line->addXY(1207452,477811);
>     $line->addXY(1207043,478520);
>     $line->addXY(1207657,478875);
>     $drawnShp->add($line);
>     error_log($drawnShp->numlines);
>     error_log($drawnShp->towkt());
> ?>
>
> Is this specifically a problem with Geos 3.1 and the function 
> ms_shapeObjFromWkt()?  Which version of Mapserver will have the patch 
> in ticket 2929?
>
> Thanks,
>
> Paul
>
> On 4/1/09 12:33 PM, "Yewondwossen Assefa" <yassefa at dmsolutions.ca> wrote:
>
>     Not helping here but I have tested your script on windows with
>     Mapserver
>       5.2.2 and 5.4 and the script runs ok. The geos version used in this
>     case is geos 2.2.3. Do you know what version of geos you are using?
>     There was a recent fix done toward geos support in MapServer and the
>     problem from what I remember was occurring with geos 3.1 (Is that
>     correct Tom ?)
>
>       (http://trac.osgeo.org/mapserver/ticket/2929
>
>     Best Regards
>
>     Moen, Paul T. wrote:
>     > I get a segmentation fault when I run the following simple script
>     with
>     > PHP MapScript on Mac OSX 10.5.6 running the latest versions from
>     > www.kyngchaos.com
>     >
>     > #!/usr/local/php5cgi/bin/php -q
>     > <?php
>     >     dl('php_mapscript.so');
>     >     $newwkt = 'MULTIPOLYGON(((1207657 478875,1208230 478275,1207452
>     > 477811,1207043 478520,1207657 478875)))';
>     >     $drawnShp = ms_shapeObjFromWkt($newwkt);
>     >     echo $drawnShp->toWKT();
>     > ?>
>     >
>     > /Library/WebServer/CGI-Executables/mapserv -v
>     > MapServer version 5.2.2 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
>     > OUTPUT=SWF OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE
>     > SUPPORTS=ICONV SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT
>     > SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER
>     > SUPPORTS=SOS_SERVER SUPPORTS=GEOS INPUT=EPPL7 INPUT=POSTGIS INPUT=OGR
>     > INPUT=GDAL INPUT=SHAPEFILE
>     >
>     > The only output is;
>     > Segmentation fault
>     >
>     > The php version is 5.2.9 and the same thing happens with php versions
>     > 5.2.8, 5.2.5.
>     >
>     > *MapServer Version    *MapServer version 5.2.2 OUTPUT=GIF OUTPUT=PNG
>     > OUTPUT=JPEG OUTPUT=WBMP OUTPUT=SWF OUTPUT=SVG SUPPORTS=PROJ
>     SUPPORTS=AGG
>     > SUPPORTS=FREETYPE SUPPORTS=ICONV SUPPORTS=WMS_SERVER
>     SUPPORTS=WMS_CLIENT
>     > SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER
>     > SUPPORTS=SOS_SERVER SUPPORTS=GEOS INPUT=EPPL7 INPUT=POSTGIS INPUT=OGR
>     > INPUT=GDAL INPUT=SHAPEFILE
>     > *PHP MapScript Version    *($Revision: 7937 $ $Date: 2008-09-30
>     07:37:46
>     > -0700 (Tue, 30 Sep 2008) $)
>     >
>     >
>     > Anybody else run into this this error?  How do I get more debug
>     information?
>     >
>     >
>     > Thanks,
>     >
>     > Paul
>     >
>     >
>     > ------------------------------------------------------------------------
>     >
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>
>
>     --
>     ----------------------------------------------------------------
>     Assefa Yewondwossen
>     Software Analyst
>
>     Email: assefa at dmsolutions.ca
>     http://www.dmsolutions.ca/
>
>     Phone: (613) 565-5056 (ext 14)
>     Fax:   (613) 565-0925
>     ----------------------------------------------------------------
>
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-- 

Edmar Moretti
CGTI/MMA
Área de Gestão de Geotecnologias
Gerente de Projetos

blog: http://edmarmoretti.blogspot.com/
skype: edmar.moretti

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