Hi,
The demo service of DM Solutions is quite fast and Zoom to WMS layer works also
with the first advertised SRS (EPSG:42304).
http://www2.dmsolutions.ca/cgi-bin/mswms_gmap
There is an issue with Zoom to WMS layer. OpenJUMP seems to take the West-East
extents of BBOX parameter from the advertised WMS BoundingBox and use the
width of the current map window as WIDTH. Then the height of the map window is
transferred to HEIGTH parameter and the South-North coordinates of BBOX are
computed to suit the image height in pixels. This may lead to oversized BBOX
which goes over valid limits. Some servers, with some projections do not like
this. For example geographic South-North extents of -137°S - 137°N may not be
accepted.
To reproduce this
- Open a new project window with default size
- Add osm layer from WMS server http://irs.gis-lab.info/? with Geographics SRS
(EPSG:4326)
- Do zoom to layer
The GetMap request which is sent by OJ is
http://irs.gis-lab.info/?
REQUEST=GetMap&
SERVICE=WMS&
VERSION=1.1.1&
WIDTH=459&
HEIGHT=351&
LAYERS=osm&
TRANSPARENT=TRUE&
FORMAT=image%2Fpng&
BBOX=-180.0,-137.64705882352942,180.0,137.64705882352942&
SRS=EPSG:4326&
STYLES=
The issue is perhaps not critical because OpenJUMP is in any case often unable
to zoom to WMS layer. On the other hand, making an oversized GetMap may work
with some servers, especially with projected coordinate systems. User can also
zoom too far out with zoom tools and make the WMS layer to disappear that way.
-Jukka-
Giuseppe Aruta wrote:
Hi
We can also enlarge the wms list with local general services, if you agree.
I think that lat/lon doesn't work because of copyright issue (Bing WMS) :-(
Peppe
2013/3/25 Rahkonen Jukka
<jukka.rahko...@mmmtike.fi<mailto:jukka.rahko...@mmmtike.fi>>
Hi,
OSM-GB works for me. Check spelling of URL, the SERVICE=WMS& part must be
included
http://www.osmgb.org.uk/OSM-GB/wms?SERVICE=WMS&;
The Zoom to WMS layer issue is a combination of WMS standard and OpenJUMP
inability to handle projections. WMS service must announce the BBOXes for
layers as WGS84 longitude-latitude. Because OpenJUMP cannot project WGS84 BBOX
to other projections, it is common that zoom on a WMS layer does not work with
all available SRS codes.
Some WMS servers send BBOXes for all the supported projections and then
OpenJUMP can zoom to layer with all coordinate systems. Zoom to layer should
also work fine if "Geographics" projection (EPSG:4326) is selected. You can try
it for example with the "USA Population" layer from the OpenGEO WMS.
The question mark button in the Zoom to layer panel shows all the BBOXes which
are included in the GetCapabilities document of the server.
I fear we can't do anything to improve the Zoom to layer operation, except that
we might add a bit more text to the message which is now only "No bounding
box(es) available!". I do not know if something like this would make user more
happy "WMS server does not send a BBOX for the selected Coordinate Reference
System {code}. You must zoom to correct location by some other means".
I will try to find some more suitable free WSM service for us.
-Jukka-
Michaël Michaud wrote:
>
> Thanks,
>
> With openstreetmap, I get the same error as with latlon (missing
> WMT_MS_Capabilities)
>
> There is also a problem with zoom on layer.
> I don't know if it is a OJ bug or a limitation, but with
> http://demo.opengeo.org/geoserver/wms
> I find no way to see a layer
>
> Michaël
>
> NB : from 3403, you get the layer list much faster with url like
> http://demo.opengeo.org/geoserver/wms
>
>
> > Hi,
> >
> > It is OK to use the demo service of OpenGEO:
> > http://demo.opengeo.org/geoserver/wms
> >
> > Then I suppose that we could use some free server from this list:
> > http://wiki.openstreetmap.org/wiki/WMS
> >
> > Perhaps OSM-GB with layers
> > http://www.osmgb.org.uk/OSM-GB/wms?SERVICE=WMS&;
> >
> > -Jukka-
> >
> > ________________________________________
> > Michaël Michaud wrote:
> >
> >> Hi
> >> I tried the default URL in OpenJUMP
> >> http://wms.latlon.org/? returns an error message
> >> http://openaerialmap.org/wms/ is not found Any idea ?
> >> any suggestion to replace them by useful addresses Michaël
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