WFS problem solved - projection issue:
I was having a problem with getting WFS to work correctly on
mapserver. The mapserver WFS was functioning properly (returning the
correct info from a GetCapabilities request. However the map did not
function properly. Tom Kralidis helped me solve the problem by
identifying that I had more than one projection definition in the WFS
mapfile - WFS mapfiles will not function with more than one level of
projection.
Here are some snippets from our exchange:
The data from the shapefile is in NAD 27, GRS80. Which I think is
EPSG 4326. I had the epsg for the mapfile set to 54004, because I
created it for wms output to google maps which uses that projection.
- I think it's EPSG:4269: http://spatialreference.org/ref/epsg/4269
I just realized that I may have the projection wrong - it looks
as though that shapefile is in NAD83. How do I figure out the epsg
for that?
- You have a .prj file, which, if exists, defines the coord sys for
the data. Eyeballing the .prj file and checking http://
spatialreference.org/ tells me that EPSG:4269 corresponds to this.
********* Key Point ********
Remember, WFS can only output ONE SRS, usually the native SRS of the
data. WMS can output MANY SRSs, hence MAP/WEB/METADATA/wms_srs.
- Thanks, Tom.
At the bottom of this message is the mapfile that Tom created.
This is the original mapfile:
###########################
MAP
NAME "roadless"
STATUS ON
SIZE 800 600
STATUS ON
EXTENT -124.40950012207 18.2457218170166 -65.7071533203125
49.0011405944824
SHAPEPATH "../shapefiles"
FONTSET ../fonts/fonts.txt
PROJECTION
"init=epsg:54004"
END
WEB
IMAGEPATH "/tmp/"
IMAGEURL "/tmp/"
METADATA
"wfs_title" "ira_wfs"
"wms_srs" "EPSG:4326"
END
END
LAYER
NAME "ira"
TYPE POLYGON
METADATA
"wfs_title" "ira"
"gml_include_items" "all"
"wfs_featureid" "ID"
END
PROJECTION
"proj=latlong"
"ellps=GRS80"
"datum=NAD27"
END
EXTENT -124.40950012207 18.2457218170166 -65.7071533203125
49.0011405944824
DUMP TRUE
DATA ira_by_name_nad83
STATUS ON
CLASS
STYLE
COLOR 255 0 0
END
END
END
END
###########################
MAP
NAME test
IMAGETYPE PNG
STATUS ON
EXTENT -124.409498 18.245724 -65.707153 49.001137
SIZE 500 300
SYMBOLSET "../../etc/symbols/symbols.sym"
FONTSET "../../etc/fonts/fonts.txt"
IMAGECOLOR 125 125 125
PROJECTION
"init=epsg:4269"
END
DEBUG ON
TRANSPARENT ON
WEB
HEADER "../../etc/templates/query_header.html"
FOOTER "../../etc/templates/query_footer.html"
IMAGEPATH "../../tmp/"
IMAGEURL "/ms_tmp"
METADATA
"ows_title" "test Web Services"
"ows_abstract" "test Web Services"
"ows_keywordlist" "kw1,kw2"
"ows_service_onlineresource" "http://www.example.org/";
"ows_fees" "none"
"ows_accessconstraints" "none"
# OGC:WMS
"wms_feature_info_mime_type" "text/html"
"wms_addresstype" "postal"
"wms_address" "867 Lakeshore Road"
"wms_city" "Burlington"
"wms_stateorprovince" "Ontario"
"wms_postcode" "L7R-4A6"
"wms_country" "Canada"
"wms_contactelectronicmailaddress" "[EMAIL PROTECTED]"
"wms_contactvoicetelephone" "+01-905-336-4409"
"wms_contactfacsimiletelephone" "+01-905-336-4499"
"wms_contactperson" "Tom Kralidis"
"wms_contactorganization" "Environment Canada"
"wms_contactposition" "Senior Systems Scientist"
"wms_srs" "EPSG:4326 EPSG:2294 EPSG:2295 EPSG:4267 EPSG:4269 EPSG:
26707 EPSG:26708 EPSG:26709 EPSG:26710 EPSG:26711 EPSG:26712 EPSG:
26713 EPSG:26714 EPSG:26715 EPSG:26716 EPSG:26717 EPSG:26718 EPSG:
26719 EPSG:26720 EPSG:26721 EPSG:26722 EPSG:26907 EPSG:26908 EPSG:
26909 EPSG:26910 EPSG:26911 EPSG:26912 EPSG:26913 EPSG:26914 EPSG:
26915 EPSG:26916 EPSG:26917 EPSG:26918 EPSG:26919 EPSG:26920 EPSG:
26921 EPSG:26922 EPSG:42101 EPSG:42304"
"wms_attribution_onlineresource" "http://www.example.org/";
"wms_attribution_title" "Data from example.org"
"wms_attribution_logourl_width" "439"
"wms_attribution_logourl_height" "68"
"wms_attribution_logourl_format" "image/jpeg"
"wms_attribution_logourl_href" "http://mapserver.gis.umn.edu/
logo.jpg"
END
END
QUERYMAP
STATUS OFF
SIZE 400 300
STYLE HILITE
COLOR 255 255 0
END
LEGEND
LABEL
SIZE 10
TYPE TRUETYPE
FONT verdana
COLOR 0 0 0
END
END
LAYER
NAME "ira"
STATUS ON
DEBUG ON
DATA "ira_by_name_nad83.shp"
TYPE POLYGON
DUMP TRUE
HEADER "ttt.html"
TEMPLATE "ttt.html"
TOLERANCE 30
METADATA
"ows_title" "ira"
"ows_abstract" "ira"
"ows_keywordlist" "kw1,kw2"
"wms_opaque" "0"
"ows_metadataurl_type" "FGDC"
"wms_metadataurl_format" "text/html"
"ows_metadataurl_href" "http://www.example.org/foo.fgdc";
"wfs_metadataurl_format" "XML"
"gml_include_items" "all"
"wfs_featureid" "ID"
END
CLASS
NAME " "
COLOR 0 255 0
OUTLINECOLOR 0 0 0
STYLE
SIZE 10
END
END
END
END
