Trouble with OGC Workshop WFS Client Demo
Kralidis,Tom [Burlington]
Tom.Kralidis at EC.GC.CA
Fri Jan 18 10:40:59 EST 2008
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?
..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
>
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