[Geoserver-users] About the WFS-T demo

[Yanlin_Weng]

Hi, Brent,

I set the SRS (2289) of my shapefiles correctly in geoserver. But the
corresponding created xml files in the "geoserver/preview" folder which
MapBuilder uses to draw the map, the SRS became 4326. I thought either
GeoServer or Mapbuilder
automatically did the conversion. So I used the same BoundingBox from xml files
in the preview folder to the xml files in my wfs-t demo folder.

After reading your message, I tried changing the SRS in xml file to 2289, the
corresponding minx, miny, maxx, maxy units as well. Then do the query again.
The two messages I got as follows:

1.A erro message box poped up with "unsupported map projection:
HTTP://WWW.OPENGIS.NET/GML/SRS/EPSG.XML#2289".

2. from Javascript Console,
Error: objRef.proj has no properties
Source File: http://localhost:8080/geoserver/mb/lib/widget/CursorTrack.js
Line: 143

Now my guess is the cursortrack widget of mapbuilder works only for 4326 or
lat/lon., and then send wfs requests with SRS defined in the local xml file,
not the one actually defined in GeoServer.

Do I need to reproject my shapefile to 4326 before uploading to geoserver?

--------------------------------------------------------------------------
Please let me know if the words above look confusing. (Still learning English)

Thanks.

Best,
Yanlin

Quoting Brent Owens <brentowens@anonymised.com>:

hmm, if the request is a getFeatureInfo request it should be
reprojecting for you. Is your data set up in geoserver with the correct
SRS value?

Brent Owens
(The Open Planning Project)

Yanlin Weng wrote:
> Hi, all,
>
> I guess I found the problem: the SRS setting.
>
> The coordinates from the mouse click is in lat. and lon. units, but the SRS
of
> my shapefile is using is a projected coordinate systems, here 2289.
Therefore
> this query returns no feature.
>
> I tried the WFS_getFeatureBBOX request using SRS 2289, and the returned GML
> looks good.
>
> Now the problem is how to convert the coordinates from mouse click to the
one I
> want on the fly?
>
> Thanks!
>
> Best,
> Yanlin
>
>
>

[Brent_Owens1]

Hi Yanlin,
Sorry for the late reply.

GeoServer 1.4 has a bug in the map preview where it defaults the SRS value to 4326. It is fixed in 1.5 however, so that issue should be resolved.

I think in mapbuilder you will need to have your data reprojected to 4326 in order for your cursor track to work, but I could be wrong. You do no need to reproject the shapefile yourself, but Geoserver will do it for you automatically (although for the best performance if it is already reprojected then it will be quicker).
Does anyone on the mapbuilder list know how the different projections are handled in mapbuilder?

Brent Owens
(The Open Planning Project)

Yanlin Weng wrote:

Hi, Brent,

I set the SRS (2289) of my shapefiles correctly in geoserver. But the
corresponding created xml files in the "geoserver/preview" folder which
MapBuilder uses to draw the map, the SRS became 4326. I thought either
GeoServer or Mapbuilder
automatically did the conversion. So I used the same BoundingBox from xml files
in the preview folder to the xml files in my wfs-t demo folder.

After reading your message, I tried changing the SRS in xml file to 2289, the
corresponding minx, miny, maxx, maxy units as well. Then do the query again.
The two messages I got as follows:

1.A erro message box poped up with "unsupported map projection:
HTTP://WWW.OPENGIS.NET/GML/SRS/EPSG.XML#2289".

2. from Javascript Console,
Error: objRef.proj has no properties
Source File: http://localhost:8080/geoserver/mb/lib/widget/CursorTrack.js
Line: 143

Now my guess is the cursortrack widget of mapbuilder works only for 4326 or
lat/lon., and then send wfs requests with SRS defined in the local xml file,
not the one actually defined in GeoServer.

Do I need to reproject my shapefile to 4326 before uploading to geoserver?

--------------------------------------------------------------------------
Please let me know if the words above look confusing. (Still learning English)

Thanks.

Best,
Yanlin

Quoting Brent Owens <brentowens@anonymised.com>:

hmm, if the request is a getFeatureInfo request it should be
reprojecting for you. Is your data set up in geoserver with the correct
SRS value?

Brent Owens
(The Open Planning Project)

Yanlin Weng wrote:
    

Hi, all,

I guess I found the problem: the SRS setting.

The coordinates from the mouse click is in lat. and lon. units, but the SRS
      

of
    

my shapefile is using is a projected coordinate systems, here 2289.
      

Therefore
    

this query returns no feature.

I tried the WFS_getFeatureBBOX request using SRS 2289, and the returned GML
looks good.

Now the problem is how to convert the coordinates from mouse click to the
      

one I
    

want on the fly?

Thanks!

Best,
Yanlin