[Mapserver-users] How to use mapserver to cascade arcims wms services
Bart van den Eijnden
bartvde at xs4all.nl
Tue Feb 10 15:34:38 EST 2004
Ed, Larry, list,
Sorry for the confusion. What was I thinking ... I sometimes tend to take
our own WMS software product as a reference, without realizing how much
more advanced Mapserver is :-)
Best regards,
Bart
On Tue, 10 Feb 2004 15:28:34 -0500, Ed McNierney <ed at topozone.com> wrote:
> Bart -
>
> My MapServer reprojects hundreds of thousands of rasters every day <g>.
> There's no problem requesting a raster layer and reprojecting it.
>
> - Ed
>
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA 01863
> ed at topozone.com
> (978) 251-4242
>
> -----Original Message-----
> From: Bart van den Eijnden [mailto:bartvde at xs4all.nl]
> Sent: Tuesday, February 10, 2004 1:29 PM
> To: Larry Nolan; mapserver-users at lists.gis.umn.edu
> Subject: Re: [Mapserver-users] How to use mapserver to cascade arcims
> wms services
>
> Hi Larry,
>
> this is because Mapserver cannot reproject raster layers.
>
> A WMS layer is treated as a RASTER layer, so it cannot be reprojected.
>
> Only thing Mapserver can do is send the EPSG code in the WMS request to
> the WMS it cascades. Maybe if you use EPSG:4326 the ArcIMS WMS won't
> reproject?
>
> Best regards,
> Bart
>
> On Tue, 10 Feb 2004 14:53:53 -0330, Larry Nolan <larrynolan at gov.nl.ca>
> wrote:
>
>> Thanks Bart,
>> It turns out that my problem is in my projection specification. If
>
>> I put an espg:26721 it works fine but is projected incorrect.
>> I'm trying to use a Transverse Mercator projection centered on 59.5
>> degrees west with a false easting of 1000000 and a false northing of 0
>
>> in NAD 27 But for some reason mapserver or arcims reports an error.
>> The projection string in the arcims axl file is:
>>
>> <FEATURECOORDSYS
>>
> string='PROJCS["NF_GNL1",GEOGCS["GCS_North_American_1927",DATUM["D_North
> _American_1927",SPHEROID["Clarke_1866",6378206.4,294.9786982]],PRIMEM["G
> reenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse
> _Mercator"],PARAMETER["False_Easting",1000000.0],PARAMETER["False_Northi
> ng",0.0],PARAMETER["Central_Meridian",-59.5],PARAMETER["Scale_Factor",0.
> 998],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]'
>> />
>>
>> In Mapserver I am using:
>>
>> Projection
>> "proj=tmerc"
>> "lat_0=0.0"
>> "lon_0=-59.5"
>> "k=0.998"
>> "x_0=1000000.0"
>> "y_0=0.0"
>> "ellps=clrk66"
>> "units=m"
>> "no_defs"
>> End
>>
>>
>> Thanks.
>>
>> Larry Nolan
>> GIS and Geoscience Data Management
>> Geological Survey of Newfoundland and Labrador Department of Mines and
>
>> Energy larrynolan at gov.nl.ca http://gis.geosurv.gov.nf.ca telephone
>> 709-729-2168
>> fax 709-729-4270
>>
>>>>> Bart van den Eijnden <bartvde at xs4all.nl> 02/07/04 01:24PM >>>
>> Hi Larry,
>>
>> first of all I think your wms_name is invalid, because it contains a
>> space. The wms_name is used to perform the WMS request. Secondly, you
>> should use 1 wms_format instead of 2 formats separated by commas (does
>
>> your ArcIMS server have a GIF license, if not use image/png).
>>
>> Here I have a working example (BTW I am using the ESRI WMS connector
>> 0.0.6
>> instead of the standard version delivered with ArcIMS 4):
>>
>> LAYER
>> CONNECTION
>>
> "http://myserver/ogcwms/servlet/com.esri.ogc.wms.WMSServlet?servicename=
> top50vector&SERVICE=WMS&VERSION=1.1.0&LAYERS=t50_vlakken_region&QUERY_LA
> YERS=t50_vlakken_region&FORMAT=image/png&transparent=true"
>> CONNECTIONTYPE WMS
>> METADATA
>> "wms_srs" "EPSG:28992 EPSG:4326"
>> "wms_onlineresource"
> "http://myserver/ogcwms/servlet/com.esri.ogc.wms.WMSServlet?servicename=
> top50vector&"
>> "wms_stylelist" ""
>> "wms_name" "top50vector_t50_vlakken_region"
>> "wms_title" "top 50 vector"
>> "wms_style_default_title" ""
>> "wms_style_default_legendurl" "0 0 "
>> "wms_server_version" "1.1.0"
>> "wms_formatlist" "image/jpeg,image/png"
>> "wms_format" "image/png"
>> "wms_boundingbox" "EPSG:28992 0 288007.5 288009 624000"
>> "wms_style" "default"
>> "wms_latlonboundingbox" "2.68506 49.54247 7.75847
> 54.61588"
>> END
>> NAME "top50vector_t50_vlakken_region"
>> PROJECTION
>> "init=epsg:28992"
>> END
>> SIZEUNITS PIXELS
>> STATUS ON
>> DUMP TRUE
>> MINSCALE 0
>> MAXSCALE 50000
>> TEMPLATE "blank.html"
>> TOLERANCE 0
>> TOLERANCEUNITS PIXELS
>> TYPE RASTER
>> UNITS METERS
>> END
>>
>> Best regards,
>> Bart
>>
>> On Fri, 06 Feb 2004 16:47:18 -0330, Larry Nolan <larrynolan at gov.nl.ca>
>> wrote:
>>
>>> I have a group of geological surveys which have arcims web mapping
>>> servers with tons of geological information. I would like to use
>>> mapserver to act as a one stop connection to each of those servers in
>
>>> a client. I have mapserver 4.0 working fine serving ogc wms map
> services.
>>> Does anyone have the syntax to connect to an esri arcims service
>>> which has the wms connector turned on.
>>>
>>> I get a a general service exception when I try to connect to this
> layer.
>>>
>>> LAYER
>>> NAME "NAD27LandBase"
>>> TYPE RASTER
>>> STATUS ON
>>> CONNECTION
>>>
> "http://gis.geosurv.gov.nf.ca/servlet/com.esri.wms.Esrimap?servicename=N
> AD27_Basemap"
>>> CONNECTIONTYPE WMS
>>> METADATA
>>> "wms_name" "Base Map"
>>> "wms_server_version" "1.1.0"
>>> "wms_formatlist"
> "image/gif,image/png,image/jpeg,image/wbmp"
>>> "wms_format" "image/gif,image/png"
>>> END
>>> PROJECTION
>>> "proj=tmerc"
>>> "lat_0=0.0"
>>> "lon_0=-59.5"
>>> "k=0.998"
>>> "x_0=0.0"
>>> "y_0=1000000.0"
>>> "ellps=clrk66"
>>> "units=m"
>>> "no_defs"
>>> END
>>> END
>>>
>>>
>>>
>>> thanks
>>> Larry Nolan
>>>
>>>
>>>
>>> _______________________________________________
>>> Mapserver-users mailing list
>>> Mapserver-users at lists.gis.umn.edu
>>> http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>>
>>
>>
>>
>
>
>
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