[OpenLayers-Users] [Geoserver-users] wfs, state plane,
and spherical mercator
cgp
carina_palanca at forcorp.com
Thu Sep 3 17:21:53 EDT 2009
How do you get this to work with ArcSDE? I have the exact same thing but it
only works for shape files. For WFS-T, same thing. Ok for shape files but
for SDE files the layers are not displayed and saving/editing an SDE layer
returns a NoSuchMethodError.
--------------------------------------------------------------------------------------
David Hollema wrote:
>
> I tried #1 below and it works sometimes. The key was setting the
> srsName. That was the whole trick. Are those options like 'typeName',
> 'srsName', etc. case sensitive?
>
>
>
> Trouble is, my WFS layer only shows at small scales but not when zoomed
> in...what other things can I check. Is that a server side issue?
>
>
>
>
>
> David A. Hollema
>
> GIS Analyst
>
>
>
> United Power, Inc.
>
> From: Jimmy Aumard [mailto:jimmy.aumard at gmail.com]
> Sent: Thursday, April 09, 2009 1:06 AM
> To: David Hollema
> Cc: Andrea Aime; users at openlayers.org;
> geoserver-users at lists.sourceforge.net
> Subject: Re: [Geoserver-users] [OpenLayers-Users] wfs, state plane, and
> spherical mercator
>
>
>
> Hi david!
>
> for wfs I make this:
>
> var France = new OpenLayers.Layer.WFS(
> "France WFS","http://localhost:8080/geoserver/wfs",
> {
> typeName: 'dep',
> featureNS: 'http://www.openplans.org/topp',
> //style:fStyle,
> extractAttributes: true ,
> srsName: "EPSG:900913"
> },
> {'reproject': true}
> );
>
> or
>
> var wfs = new OpenLayers.Layer.Vector(
> "France2 wfs",
> {
> strategies: [new OpenLayers.Strategy.BBOX(), saveStrategy],
> projection: new OpenLayers.Projection("EPSG:900913"),
> protocol: new OpenLayers.Protocol.WFS({
> srsName: "EPSG:900913",
> url: "http://localhost:8080/geoserver/wfs",
> featureType: "dep",
> version:'1.1.0',
> featureNS: "http://www.openplans.org/topp",
> })
> }
> );
>
> try and tell me if it's works.
>
> Jim
>
> 2009/4/8 David Hollema <dhollema at unitedpower.com>
>
> Here is my code. WMS reprojects fine b/c my understanding is geoserver
> receives the base map projection (900913) and reprojects accordingly. I
> would figure that geoserver would do the same thing to the WFS but it
> doesn't. My SRS handling in geoserver is set to force declared (default
> setting) and my declared is correct, 2231 in this case. For WMS, it's
> not even necessary to set the srs in the layer constructor b/c geoserver
> just figures it out.
>
> It's important to note that I even tried with my source data in 4326
> (lat/long) and WMS still worked fine but WFS fails. It doesn't seem to
> be due to State Plane issues but it's more fundamental than that.
>
> var bounds = new OpenLayers.Bounds
> (-20037508.34, -20037508.34, 20037508.34, 20037508.34);
> var options2 = {
> units: 'm',
> projection: 'EPSG:900913',
> maxExtent: bounds
> };
> format = 'image/gif';
>
> map2 = new OpenLayers.Map('map2',
> options2);
>
> velayer = new
> OpenLayers.Layer.VirtualEarth( "VE",
> { 'type': VEMapStyle.Roads,
> 'sphericalMercator': true});
>
> layerWMS = new OpenLayers.Layer.WMS(
> "Joint Use Photos",
> "http://upigis:8080/geoserver/wms",
> {layers: 'sde:jointusepicture',
> format: format,
> transparent: true
> },
> {opacity: 1.0,
> isBaseLayer: false, 'singleTile': true
> });
>
> layerWFS = new OpenLayers.Layer.WFS(
> "Joint Use Photos WFS",
> "http://upigis:8080/geoserver/wfs",
> {
> typename:
> "sde:jointusepicture"},
> {extractAttributes: true}
> );
>
>
> David A. Hollema
> GIS Analyst
>
> United Power, Inc.
>
> -----Original Message-----
> From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org]
> On Behalf Of Andrea Aime
> Sent: Tuesday, April 07, 2009 1:36 AM
> To: David Hollema
> Cc: users at openlayers.org; geoserver-users at lists.sourceforge.net
> Subject: Re: [OpenLayers-Users] [Geoserver-users] wfs, state plane,and
> spherical mercator
>
> David Hollema ha scritto:
>> Here's my dilemma. I have a map with projection defined as spherical
>> Mercator, EPSG 900913. I have a geoserver WMS layer whose native
>> projection is state plane Colorado north (EPSG 2231). With help from
>> the lists, I'm able to overlay the WMS fine on a Virtual Earth map.
>> When I add a new WFS layer (pointing at the same geoserver data) using
>
>> similar constructor as the WMS, the WFS layer does not overlay fine,
>> it's shifted way off. That's problem 1. I can't figure out how to
> get
>> the WFS to overlay.
>
> Please share the request you're making. The WFS and WMS reprojection
> syntaxes are not equal. Also, what is the SRS handling you chose
> in your feature type configuration?
>
>> Next question. I want to recenter the map based on a feature created
>> from a separate WFS request. I use OL.Format.GML and the read method
>
>> to create a new feature from the responseXML. When I look at the
>> geometry of the point feature, the x,y cords are in the native
>> coordinates. I tried point.transform("EPSG:2231","EPSG:900913") but
> the
>> transformation never works properly. All the examples I see go from
>> 4326 to 900913. My data are in State Plane. I would expect that the
>> underlying transformation library could handle this transformation but
>
>> maybe not?
>
> You can also have GeoServer do the reprojection for you. You just
> have to add &srsName=EPSG:900913 to your request, keeping the eventual
> bbox in 2231, or have the bbox in 900913 too, but state it explicitly
> with &bbox=x0,y0,x1,y1,EPSG:900913
>
> Cheers
> Andrea
>
> --
> Andrea Aime
> OpenGeo - http://opengeo.org
> Expert service straight from the developers.
>
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