Trouble with OGC Workshop WFS Client Demo

Fri Jan 18 09:02:24 PST 2008

This work-around did the trick!  And wow, thank you Tom and Assefa for such a quick response.  

Cheers,
Scott

 -------------- Original message ----------------------
From: Yewondwossen Assefa <yassefa at DMSOLUTIONS.CA>
> Kralidis,Tom [Burlington] wrote:
> > Hi,
> > 
> > I'm getting the same error on my version.  I seem to remember something
> > about a path issue with a newer version of OGR, but I could be wrong.
> > 
> > Assefa: do you remember what the cause of this is?
> > 
>   I am not sure what the issue is and I need to dig more to see what is 
> causing a problem of opening a OGR type file when the full path without 
> the drive is given.
>   Quick fix for this is to replace /ms4w/tmp/ms_tmp/ with 
> 'c:/ms4w/tmp/ms_tmp/' (or your drive name where you installed ms4w)
> 
>   file to change for this problem is 
> ms4w/apps/ms_ogc_workshop/client/wfs/demo_init.html :
> 
> <input type="hidden" name="map_web" value="imagepath 
> 'c:/ms4w/tmp/ms_tmp/' imageurl /ms_tmp/">
> 
> Best Regards
> 
> > .Tom
> > 
> > 
> >> -----Original Message-----
> >> From: UMN MapServer Users List 
> >> [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of Scott Wittenburg
> >> Sent: 17 January, 2008 2:59 PM
> >> To: MAPSERVER-USERS at LISTS.UMN.EDU
> >> Subject: [UMN_MAPSERVER-USERS] Trouble with 
> >> OGC Workshop WFS Client Demo
> >>
> >> Hello All,
> >>
> >> I'm new to mapserver, and I'm having trouble getting one of 
> >> the OGC Workshop demos to work.  Hopefully I'll include 
> >> enough support information here so that someone can help me 
> >> figure what I'm doing wrong.  
> >> If anything is missing, please ask and I'll provide any other 
> >> necessary details.  Thanks for taking the time to read this 
> >> problem description.
> >>
> >> Ok, specifically, when I attempt to run the WFS client demo, 
> >> I get an error in my browser window which looks like this:
> >>
> >> msDrawMap(): Image handling error. Failed to draw layer named 
> >> 'envirodat'. msOGRFileOpen(): OGR error. Open failed for OGR 
> >> connection 
> >> `/ms4w/tmp/ms_tmp/e80d38d9bdf59eada6d84cd0b21eb99e.tmp.gml'. 
> >> File not found or unsupported format.
> >>
> >> The url that generated this error was:
> >>
> >> http://localhost/cgi-bin/mapserv.exe?map=%2Fms4w%2Fapps%2Fms_o
> >> gc_workshop%2Fclient%2Fwfs%2Fdemo.map&layer=envirodat&layer=ri
> >> vers&layer=land_shallow_topo_2048&zoomsize=2&zoomdir=1&program
> >> =%2Fcgi-bin%2Fmapserv.exe&map_web=imagepath+%2Fms4w%2Ftmp%2Fms
> >> _tmp%2F+imageurl+%2Fms_tmp%2F
> >>
> >> When I look in the directory "C:\ms4w\tmp\ms_tmp\", I see the 
> >> file in question and I've looked at it.  It appears to be 
> >> valid GML, though the cygwin "ls -lt" 
> >> command shows the file permissions as
> >> "-rwxrwx---".  Is this a problem (not world readable)?  
> >> The "C:\ms4w\tmp\ms_tmp\" directory permissions are even more 
> >> restrictive: "drwx------".  I've tried opening up all the 
> >> permissions on all these files and directories, but it didn't 
> >> seem to help.
> >>
> >> Here are some system configuration details:
> >>
> >> I'm running Windows XP, SP2.  I installed MS4W version 2.2.6 
> >> and the OGC Workshop version 1.0.8 into the recommended 
> >> location, "C:\" (root directory is "C:\ms4w\").  Everything 
> >> seemed to work fine, and several of the workshop demos worked 
> >> fine, but when I clicked on the WFS-Client demo link and then 
> >> clicked the "Initialize" button, I got the error message shown above.
> >>
> >> I noticed a message in the archives that looked very similar 
> >> to this error, but the problem was actually an extra path 
> >> separator char getting put into the tmp file path.  Other 
> >> than that, I haven't really seen this problem addressed 
> >> anywhere, so most people obviously aren't seeing it.  One 
> >> thing I found that people have said could be a problem is the 
> >> version of OGR/GDAL used by mapserver.  I've used the 
> >> "C:\ms4w\tools\gdal-ogr\ogrinfo.exe
> >> program to look at the tmp gml file in question:
> >>
> >> C:\ms4w\tools\gdal-ogr>ogrinfo.exe 
> >> C:\ms4w\tmp\ms_tmp\e80d38d9bdf59eada6d84cd0b21eb99e.tmp.gml
> >>
> >> Had to open data source read-only.
> >> INFO: Open of 
> >> 'C:\ms4w\tmp\ms_tmp\e80d38d9bdf59eada6d84cd0b21eb99e.tmp.gml'
> >>            using driver 'GML' successfull.
> >> 1: envirodat
> >>
> >> So that seems fine, doesn't it?  The MS4W 2.2.6 documentation 
> >> says it includes "GDAL/OGR 1.4.2 and Utilities", so that 
> >> seems fine too.
> >>
> >> Here's the mapfile of the demo that caused the
> >> problem:
> >>
> >> #
> >> # $Id: demo.map,v 1.2 2006/08/08 19:02:46 tkralidi Exp $ # # 
> >> Start of map file #
> >>
> >> MAP
> >>
> >>  # all temp files get prefixed with this string  NAME ms_ogc_workshop
> >>
> >>  # always returns a map
> >>  STATUS ON
> >>
> >>  # image format options
> >>  OUTPUTFORMAT
> >>   NAME png
> >>   DRIVER "GD/PNG"
> >>   MIMETYPE "image/png"
> >>   IMAGEMODE RGB
> >>   EXTENSION "png"
> >>  END
> >>
> >>  # width / height of map image
> >>  SIZE 500 300
> >>
> >>  # projection of the INTERFACE that this mapfile supports  PROJECTION
> >>   "init=epsg:4326"
> >>  END
> >>
> >>  # minx miny maxx maxy
> >>  EXTENT -180 -90 180 90 # World
> >>
> >>  # units of map/app
> >>  UNITS DD
> >>
> >>  # def pointers for symbols
> >>
> >>  SYMBOLSET "../../etc/symbols/symbols.sym"
> >>  FONTSET   "../../etc/fonts/fonts.txt"
> >>
> >>  #
> >>  # Start of web interface definition
> >>  #
> >>  WEB
> >>
> >>   TEMPLATE "../../templates/demo.html"
> >>   HEADER   "../../templates/query_header.html"
> >>   FOOTER   "../../templates/query_footer.html"
> >>   
> >>   # this is set in the form which initializes the page, but 
> >> can be set here if you want
> >>   IMAGEPATH "/ms4w/tmp/ms_tmp/"
> >>
> >>   # this is set in the form which initializes the page, but 
> >> can be set here if you want
> >>   IMAGEURL "/ms_tmp/"
> >>  END
> >>
> >>  #
> >>  # Start of reference map
> >>  #
> >>  REFERENCE
> >>   # which image is the base image for refmaps
> >>   # a area of interest box will be drawn on top of it
> >>   IMAGE ../../graphics/refmap_world_4326.gif
> >>
> >>   # extents of ref image (minx miny maxx maxy)
> >>   EXTENT -180 -90 180 90
> >>
> >>   # width / height of image
> >>   SIZE 150 75
> >>
> >>   # always generated
> >>   STATUS ON
> >>
> >>   COLOR -1 -1 -1
> >>
> >>   # color of outline
> >>   OUTLINECOLOR 255 0 0
> >>  END
> >>
> >>  #
> >>  # Start of legend
> >>  #
> >>  LEGEND
> >>   KEYSIZE 18 12
> >>   LABEL
> >>    TYPE BITMAP
> >>    SIZE MEDIUM
> >>    COLOR 0 0 89
> >>   END
> >>   TEMPLATE "../../templates/legend.html"
> >>   STATUS ON
> >>  END
> >>
> >>  #
> >>  # Start of scalebar
> >>  #
> >>  SCALEBAR
> >>   IMAGECOLOR 255 0 0
> >>   LABEL
> >>    COLOR 0 0 0
> >>    SIZE tiny    
> >>   END
> >>   STYLE 1
> >>   SIZE 80 2
> >>   COLOR 0 0 0
> >>   UNITS KILOMETERS
> >>   INTERVALS 1
> >>   TRANSPARENT TRUE
> >>   STATUS TRUE
> >>  END
> >>
> >>  # start of querymap object
> >>  QUERYMAP
> >>   SIZE 200 200
> >>   STATUS ON
> >>   STYLE HILITE
> >>   COLOR 255 0 0
> >>  END
> >>
> >>  # start of layer definitions
> >>
> >>  LAYER
> >>   # name of layer
> >>   NAME land_shallow_topo_2048
> >>   GROUP "RASTER"
> >>   
> >>   # projection: if the data is NOT in the same projection as 
> >> the global
> >>   # mapfile, you must explicitly give the native projection 
> >> code of the data
> >>   # some common projections:
> >>   # lat/long: epsg:4326
> >>   # NRCan LCC: epsg:42304
> >>   PROJECTION
> >>    "init=epsg:4326"
> >>   END
> >>
> >>   # what type of data is this?
> >>   TYPE RASTER
> >>
> >>   # always returned with interface
> >>   STATUS ON
> >>
> >>   # actual data pointer
> >>   DATA ../../data/land_shallow_topo_2048.tif
> >>   
> >>   DUMP TRUE
> >>   
> >>   HEADER   "../../templates/land_shallow_topo_2048_query_header.html"
> >>   TEMPLATE "../../templates/land_shallow_topo_2048_query_body.html"
> >>   
> >>   TOLERANCE 5
> >>     
> >>  END
> >>  
> >>  LAYER
> >>   # name of layer
> >>   NAME rivers
> >>   GROUP "VECTOR"
> >>   
> >>   # projection: if the data is NOT in the same projection as 
> >> the global
> >>   # mapfile, you must explicitly give the native projection 
> >> code of the data
> >>   # some common projections:
> >>   # lat/long: epsg:4326
> >>   # NRCan LCC: epsg:42304
> >>   PROJECTION
> >>    "init=epsg:4326"
> >>   END
> >>
> >>   # what type of data is this?
> >>   TYPE LINE
> >>
> >>   # always returned with interface
> >>   STATUS ON
> >>
> >>   # actual data pointer
> >>   DATA ../../data/rivers
> >>
> >>   # data is queryable
> >>   DUMP TRUE
> >>
> >>   # query templates for HTML-based queries
> >>   HEADER   ../../templates/rivers_query_header.html
> >>   TEMPLATE ../../templates/rivers_query_body.html
> >>
> >>   TOLERANCE 5
> >>
> >>   # how will this data look?
> >>   CLASS
> >>    NAME "Rivers"
> >>    COLOR 0 0 255
> >>   END
> >>  END
> >>
> >>  LAYER
> >>   NAME envirodat
> >>   GROUP "VECTOR"
> >>   TYPE POINT
> >>   STATUS ON
> >>   # this is a remote OGC:WFS
> >>   CONNECTIONTYPE WFS
> >>
> >>   # the server URL prefix
> >>   # MapServer will add the OGC:WMS specific
> >>   # keyword value pairs accordingly
> >>   #CONNECTION 
> >> "http://map.ns.ec.gc.ca/envdat/map.aspx?service=WFS&version=1.
> >> 0.0&request=GetFeature"
> >>   CONNECTION "http://map.ns.ec.gc.ca/envdat/map.aspx?"
> >>
> >>   PROJECTION
> >>    "init=epsg:4326"
> >>   END
> >>
> >>   # base info MapServer needs to know to generate the
> >>   # OGC:WFS GetFeature request
> >>   METADATA
> >>
> >>    # MapServer default sends POST
> >>    # force to GET
> >>    
> >>    "wfs_request_method" "GET"
> >>    
> >>    # how long (in seconds) should MapServer use
> >>    # in issuing and receiving the data?
> >>    "wfs_connectiontimeout" "60"
> >>
> >>    # which version of the OGC:WFS should MapServer communicate with
> >>    "wfs_version" "1.0.0"
> >>
> >>    # service type for connection
> >>    # this info is a bit redundant
> >>    "wfs_service" "WFS"
> >>
> >>    # what is the feature type you are querying
> >>    "wfs_typename" "envirodat"
> >>
> >>    # what is the spatial extent?
> >>    "wfs_latlonboundingbox" "-64.6622 46.7594 -52.6808 55.2333"
> >>    #
> >>   END
> >>   #
> >>   # MapServer will then use this information to generate a 
> >> string like:
> >>   # 
> >> http://map.ns.ec.gc.ca/envdat/map.aspx?version=<wfs_version>&s
> > ervice=<wfs_service>&request=GetFeature&typename=<wfs_typename>
> >>   #
> >>   # missing required keyword value pairs get generated according
> >>   # to the application using this mapfile, i.e.:
> >>   # &bbox, &filter, etc.
> >>
> >>   CLASS
> >>    NAME "Water Quality Monitoring Stations"
> >>    COLOR 255 255 0
> >>   END
> >>  END
> >> END
> >>
> > 
> > 
> 
> 
> -- 
> ----------------------------------------------------------------
> Assefa Yewondwossen
> Software Analyst
> 
> Email: assefa at dmsolutions.ca
> http://www.dmsolutions.ca/
> 
> Phone: (613) 565-5056 (ext 14)
> Fax:   (613) 565-0925
> ----------------------------------------------------------------