[mapserver-users] [EXTERNAL] Re: How can I read Z coordinates in a shape file ?
Smith, Michael ERDC-RDE-CRREL-NH
Michael.Smith at erdc.dren.mil
Thu Jan 8 04:07:41 PST 2015
The line in MapServer to show Z_M support is SUPPORTS=POINT_Z_M.
Here's an example that shows WFS output with Z Values:
http://geo.usace.army.mil/cgi-bin/wms/nldwfs?service=wfs&version=1.1.0&requ
est=getfeature&typename=leveesclosurestructureln&maxfeatures=10&outputforma
t=gml3d
Note that this uses a specific outputformat that is an OGR outputformat
with the ows_geomtype in the Layer metadata set to LineString25D.
Mike
--
Michael Smith
US Army Corps
Remote Sensing GIS/Center
On 1/8/15, 5:26 AM, "Rahkonen Jukka (MML)"
<jukka.rahkonen at maanmittauslaitos.fi> wrote:
>Hi,
>
>I would first check that your Mapserver is compiled with Z/M coordinate
>support which is required by reading the document
>http://mapserver.org/output/ogr_output.html . However, I have never
>played with 25D/3D geometries with Mapserver and I have no idea how to
>check if the Z_M support is compiled in. Perhaps there would be something
>about that in the comment line of GetCapabilities which typically shows
>something like "MapServer version 6.4.0 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG
>SUPPORTS=PROJ ..."
>
>Excerpt from the WFS server manual:
>
>ows/wfs_geomtype
>
> (Optional) Set the geometry type of OGR layers created from this
>MapServer LAYER. One of "Point", "LineString", "Polygon", "MultiPoint",
>"MultiLineString", "MultiPolygon", "GeometryCollection", "Geometry", or
>"None". Most are fairly obvious, but "Geometry" can be used to represent
>a mix of geometry types, and "None" is sometimes suitable for layers
>without geometry. Note that layers which are a mix of polygon and
>multipolygon would normally have to be described as "Geometry". To
>produce 2.5D output append "25D" to the geometry type (ie. "Polygon25D").
>Note that Z values are only carried by MapServer if built with
>USE_POINT_Z_M support.
>
>I would guess that it is OK in your case because you must have read the
>documentation well before getting as far as you are now.
>My next guess is that perhaps 'wfs_getfeature_formatlist' 'OGRGML' does
>not remove the default outputformat which is mandated by the WFS standard
>and which is GML2 for WFS version 1.0.0. In that case, if you are lucky,
>the problem may be solved by asking Mapserver explicitly use your
>tailored outputformat by adding &OUTPUTFORMAT=OGRGML. If Mapserver
>behaves as it should you can check the GetCapabilities document and read
>the list of available formats from the ResultFormat section. For example
>this server supports only the default GML2
>http://demo.mapserver.org/cgi-bin/wfs?SERVICE=WFS&VERSION=1.0.0&REQUEST=Ge
>tCapabilities.
>
>Despite being the last thing on my short list reading carefully the
>GetCapabilities document is actually the thing that should always be done
>first if there are some troubles with WMS/WFS/WCS services.
>
>
>-Jukka Rahkonen-
>
>
>
>
>Heyser Sylvain wrote:
>
>> Dear Mapserver community,
>
>> I try to read the value of the Z coordinate in an Esri Shape file
>>without success.
>
>> I want to get the Z values through an url request (WFS) like this :
>http://my_server_ip/cgi-bin/mapserv?map=/var/www/data/mapfile.map&SERVICE=
>WFS&VERSION=1.0.0&REQUEST=GetFeature&SRS=EPSG:3163&BBOX=458692.315380274,3
>94716.36951207,460607.98862158,395413.707691068&TYPENAME=Piste
>
>> But I only get output data without Z values.
><gml:featureMember><ms:Piste fid="Piste.1"><gml:boundedBy><gml:Box
>srsName="EPSG:3163"><gml:coordinates>459689.471118,394821.251944
>459699.341118,394828.476944</gml:coordinates></gml:Box></gml:boundedBy><ms
>:msGeometry><gml:LineString
>srsName="EPSG:3163"><gml:coordinates>459699.341118,394821.251944
>459693.717118,394828.476944 459689.471118,394825.098944
></gml:coordinates></gml:LineString></ms:msGeometry><ms:PISTAER_ID>1</ms:PI
>STAER_ID></ms:Piste></gml:featureMember><gml:featureMember>
>
>
>> The OGRINFO of the data is :
>Layer name: PISTAERO_line
>Geometry: 3D Line String
>Feature Count: 2
>Extent: (459349.927521, 394583.151000) - (460037.901778, 395483.896917)
>Layer SRS WKT:
>(unknown)
>PISTAER_ID: Integer (5.0)
>
>I have configure my map file as follow :
>MAP
> NAME DACDEV_map
> STATUS ON
> SIZE 900 700
> EXTENT 150000 150000 650000 650000
> UNITS METERS
> SHAPEPATH "shape"
> IMAGECOLOR 255 255 0
> SYMBOLSET "symbols-dac.sym"
> PROJECTION
> 'init=epsg:3163'
> END
>
> CONFIG 'MS_ERRORFILE' '/var/www/tmp/ms_error.log'
>
> OUTPUTFORMAT
> NAME "OGRGML"
> DRIVER "OGR/GML"
> FORMATOPTION "STORAGE=filesystem"
> FORMATOPTION "FORM=multipart"
> FORMATOPTION "FILENAME=/var/www/tmp/result.gml"
> END
>
> WEB
> TEMPLATE "template.html"
> IMAGEPATH "/var/www/tmp/"
> IMAGEURL "/tmp/"
> METADATA
> 'wms_title' 'DAC_DATA'
> 'wms_srs' 'EPSG:3163'
> 'wfs_title' 'DEMO'
> 'wfs_olineressource' 'http://192.168.10.108/cgi-bin/mapserv?'
> 'wfs_srs' 'EPSG:3163'
> 'wfs_enable_request' '*'
> END
> END
>
> LAYER
> NAME "Piste"
> DEBUG 5
> METADATA
> 'wfs_title' 'Piste'
> 'wfs_srs' 'EPSG:3163'
> 'gml_featureid' 'PISTAER_ID'
> 'gml_include_items' 'all'
> 'wfs_enable_request' '*'
> 'wms_enable_request' '*'
> 'ows_geomtype' 'LineString25D'
> 'wfs_geomtype' 'LineString25D'
> 'wfs_getfeature_formatlist' 'OGRGML'
> END
> CONNECTION "PISTAERO_line.shp"
> CONNECTIONTYPE OGR
> DATA 'PISTAERO_line'
> STATUS ON
> DUMP true
> TYPE LINE25D
> CLASS
> NAME "line_color"
> COLOR 255 215 0
> END
> END
>END
>
>> I don't understand why the /var/www/tmp/result.gml file is never
>>created. It looks like that the OGRGML OUTPUTFORMAT is not used by
>>mapserv.
>
>Kind regards,
>Sylvain
>
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