Trouble with OGC Workshop WFS Client Demo
Scott Wittenburg
wwittenburg at COMCAST.NET
Fri Jan 18 12:02:24 EST 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
> ----------------------------------------------------------------
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