[Mapserver-users] shp2Img Segmentation Fault error with ArcSD
E layer (mapserv Query )
Fawcett, David
David.Fawcett at state.mn.us
Tue Oct 14 15:10:47 EDT 2003
The shpdump.exe utility will also give you extents.
David.
> ----------
> From: Pryor, Clayton J[SMTP:CJPRYOR at sandia.gov]
> Sent: Tuesday, October 14, 2003 12:03 PM
> To: 'mapserver-users at lists.gis.umn.edu'
> Cc: InSIST
> Subject: [Mapserver-users] shp2Img Segmentation Fault error with ArcSDE layer (mapserv Query )
>
>
> Hi all,
>
> Well, I'm making progress with building a version of the default demo app
> using my layers in ArcSDE. However, I have run into another problem that I
> can not seem to find the answer to.
>
> It has been described in the archives before but the thread in the archives
> took a different branch than mine. I have not been able to find out how to
> resolve the branch that my problem has taken.
>
>
> System Configuration:
> ---------------------
>
> Machine: IBM ThinkPad A31
> Operating System: Linux Red Hat 9
> Web Server: Apache (httpd-2.0.47)
> PHP: 4.3.3 configured for CGI
> GD: 2.0.15
> PROJ: 4.4.7
> Mapserver: 4.0
> ArcSDEClient: 8.3
>
> Mapserver Configuration: ./configure --with-sde=/usr/local/arcsde/sdeexe83
> --with-sde-version=83 --with-gd=/usr/local --with-php=/usr/local/php-4.3.3
> --with-proj=/usr/local
>
>
> Problem Description:
> --------------------
>
> When trying to do a query from my web page against a layer based on a shape
> file that came with the demo app the query works fine. When trying to do a
> query from my web page against a layer based on ArcSDE (Oracle) I get the
> generic "Internal Server Error" message. I believe everything is properly
> duplicated in my demo.map file and my html files so that the ArcSDE based
> query is the same as the shapefile based query.
>
> In reviewing the apache server logs I see the "Premature end of script
> headers" message.
>
>
> Command Line Results:
> ---------------------
>
> When I enter the mapserv call from the command line I get html for a web
> page followed by a line that reads: "Segmentation fault".
>
> Here is the actual command that I enter in the "htdocs/demoSNL3" directory
> (which contains my application):
>
> ../../cgi-bin/mapserv
> QUERY_STRING="map=%2Fusr%2Flocal%2Fapache2%2Fhtdocs%2FdemoSNL3
> %2Fdemo.map&layer=usboundaries&zoomsize=2&program=%2Fcgi-bin
> %2Fmapserv&map_web_imagepath=%2Fusr%2Flocal%2Fapache
> 2%2Fhtdocs%2Ftmp%2F&map_web_imageurl=%2Ftmp%2F"
>
> Here are the actual results that I get back:
>
> Content-type: text/html
>
> <!-- MapServer version 4.0 OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP SUPPORTS=PROJ
> SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER INPUT=TIFF INPUT=EPPL7 INPUT=JPEG
> INPUT=SDE INPUT=SHAPEFILE -->
> <html>
> <head><title>MapServer SNL3 Demo Interface</title></head>
> <body bgcolor=#FFFFFF>
>
> <center><h1>MapServer SNL3 Demo Interface</h1></center>
> <hr>
> <form method=GET action="/cgi-bin/mapserv">
>
> <center>
> <table border=0 cellspacing=0 cellpadding=4 bgcolor="#000000">
> <tr>
> <td valign="top" align=center>
> <table cellpadding="0" cellspacing="0" border="0">
> <tr><td colspan="2"><INPUT NAME="img" TYPE="image"
> SRC="/tmp/DEMO106614390932750.png" width=600 height=600 border=0></td></tr>
> <tr>
> <td> <font size=-1 face="arial,helvetica"
> color="#FFFFFF"><b>Powered by MapServer</b></font></td>
> <td align="right"><img src="/tmp/DEMOsb106614390932750.png"></td>
> </tr>
> </table>
> </td>
> <td valign="top" bgcolor=#ffffff>
> <table cellpadding="5" cellspacing="0" border="0" bgcolor="#ffffff">
> <tr><td>
> <center><input type="submit" value="Refresh/Query"></center>
> <p>
>
> <input type="radio" name="mode" value="browse" checked> <b>Browse
> map</b><br>
> <input type="radio" name="mode" value="query"> <b>Query
> feature</b><br>
> <input type="radio" name="mode" value="nquery"> <b>Query multiple
> features</b>
>
> <hr>
>
> <p>
> <b>Select Layers to Display: </b><br>
> <select multiple name="layer" size=3>
>
> <option value="usboundaries" selected> US State Boundaries>
> <option value="generationplants" > EP Generation Plants
> <option value="substations" > EP Substations
> <option value="transmissionlines" > EP Transmission Lines
>
> </select>
>
> <p>
> Zoom In <input type=radio name=zoomdir value=1 >
> Pan <input type=radio name=zoomdir value=0 checked>
> Zoom Out <input type=radio name=zoomdir value=-1 >
> <p>
> Zoom Size <input type=text name=zoomsize size=4 value=2>
> <p>
>
> <font size=+1><b>Legend</b></font><br><hr>
> <img src="/tmp/DEMOleg106614390932750.png"><hr>
>
> <p>
> <center><INPUT NAME="ref" TYPE="image"
> SRC="/tmp/DEMOref106614390932750.png" border="0"></center>
> </td></tr></table>
>
> </td></tr>
> </table>
> </center>
>
> <input type="hidden" name="imgxy" value="299.5 299.5">
> <input type="hidden" name="imgext" value="-4574351.873995 -4032950.294076
> 4517834.162229 5059850.315722">
> <input type="hidden" name="map"
> value="/usr/local/apache2/htdocs/demoSNL3/demo.map">
> <input type="hidden" name="savequery" value="true">
>
> <input type="hidden" name="program" value="/cgi-bin/mapserv">
> <input type="hidden" name="map_web_imagepath"
> value="/usr/local/apache2/htdocs/tmp/">
> <input type="hidden" name="map_web_imageurl" value="/tmp/">
>
> </form>
>
> <p><hr><p>
>
> </body></html>
>
> Segmentation fault
>
>
> Similar Post:
> -------------
>
> I found the following response to a similar post in the archives. This, in
> fact, does generate the same problem in my environment. However, it is not
> the problem in the archives so I could not find out what to do with this
> problem!
>
> --------begin post--------
>
> Hi Matthew,
>
> > However, if I pass any parameters at all, be they in mapserver, WMS
> > or WFS format, I get an internal server error. The error log says
> > only "premature end of script", and if I run mapserv at the command
> > line by passing a QUERY_STRING here, I get "segmentation fault".
>
> I had a similar problem and could find out what went wrong the shp2img
> program, that was compiled with mapserver. Run it on a shell with your
> mapfile (e.g. shp2img -m mapfile.map -o output.png) and see, if there
> are any errors. If yes, I think, that the same errors will happen using
> the mapserv CGI.
>
> hth,
>
> Bjoern.
>
> ---------end post---------
>
>
> Follow-up Command Line Results:
> -------------------------------
>
> When I enter the suggested command on my own system in the subdirectory
> containing shp2img I get the "Segmentation fault" error again. This is the
> difference between my problem and the post referenced above.
>
> Here is the actual command that I enter and the result:
>
> ./shp2img -m /usr/local/apache2/htdocs/demoSNL3/demo.map -o output.png
> Segmentation fault
>
> Help Requested:
> ---------------
>
> Now that I have isolated the problem to shpimg, what is the next step in
> resolving it?
>
> Once again, your help is greatly appreciated!
>
> Sincerely,
>
> Clay
>
> ------------------------------------------------------------
> Clayton J. Pryor phone (505) 845-3557
> Sandia National Laboratories
> Critical Infrastructure Surety fax (505) 844-9641
> PO Box 5800 MS 0451
> Albuquerque NM 87185-0451 email cjpryor at sandia.gov
> ------------------------------------------------------------
>
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