[Fwd: Re: [UMN_MAPSERVER-DEV] single classed layers and GetLegendGraphic]

[Kralidis,Tom [Burlington]]

> -----Original Message-----
> From: bartvde at xs4all.nl [mailto:bartvde at xs4all.nl] 
> Sent: Wednesday, 10 November, 2004 02:33
> To: Kralidis,Tom [Burlington]
> Cc: mapserver-dev at lists.umn.edu
> Subject: Re: [UMN_MAPSERVER-DEV] [Fwd: Re: 
> [UMN_MAPSERVER-DEV] single classed layers and GetLegendGraphic]
> 
> 
> For reference, this was my original post on the wms-dev list.
> 
> http://lists.eogeo.org/pipermail/wms-dev/2004-May/000518.html
> 
> The answer Keith gave only applied to the case of multiple 
> rules, but I did not suspect this behaviour to be different 
> from the case where there is only one rule ... but apparently 
> it is in Cubewerx's implementation ...
> 
> I do see Tom has a point now, but still think the spec is not 
> fully well-thought at the moment ...
> 
> Tom, btw what is your purpose for only getting the legend 
> graphic without a label in the case of a single class layer? 
> Are you putting the wms_title next to the legend graphic in 
> the WMS client (or using no label at all?), because otherwise 
> you need to know the name of the Rule anyway to put it next 
> to the legend graphic (and use a GetStyles request to know this name).
>

Yes, I'm basically writing out a table like:

Icon|Title
Icon|Title

...so it's a bit redundant if the title is shown twice.
 
> Btw2: does Cubewerx use the GetLegend request in their LegendURL?
> 

No, it's a vendor specific thing they use in CubeXPLOR.

> Best regards,
> Bart
> 
> >> As I wrote already, I agree that this may be a valid 
> interpretation, 
> >> and that was our initial interpretation of the spec. 
> However the spec 
> >> is vague on this and in bug 653 it was requested that we align
> >> MapServer's
> >> behavior with other (prior) implementations (cubeserv) so
> >> that clients
> >> can better interoperate.
> >>
> >
> > Here are my CubeSERV observations:
> >
> > CubeSERV OGC:WMS 1.1.1 GetLegendGraphic requests:
> >
> > This is a layer with multiple classes:
> >
> > 
> http://ceoware2.ccrs.nrcan.gc.ca/cubewerx/cubeserv/cubeserv.cgi?servic
> > e=
> > 
> WMS&version=1.1.1&request=GetLegendGraphic&layer=CANADNAODA_L%
> 3ACEOWARE2
> > &format=image/png
> >
> > This is a layer with a single class (i.e. all point symbols are the
> > same)
> >
> > 
> http://ceoware2.ccrs.nrcan.gc.ca/cubewerx/cubeserv/cubeserv.cgi?versio
> > n=
> > 
> 1.1.1&service=WMS&request=GetLegendGraphic&layer=GCDB_INDEX:CE
> OWARE2&for
> > mat=image/png
> >
> > The layer title does not show up as part of the image.  This is 
> > default behaviour.
> >
> > Here is the same layer (single class) with the layer name 
> embedded in 
> > image via 'GetLegend'
> >
> > 
> http://ceoware2.ccrs.nrcan.gc.ca/cubewerx/cubeserv/cubeserv.cgi?versio
> > n=
> > 
> 1.1.1&service=WMS&request=GetLegend&layers=GCDB_INDEX:CEOWARE2
> &format=im
> > age/png
> >
> > Here are both layers in a GetLegend:
> >
> > 
> http://ceoware2.ccrs.nrcan.gc.ca/cubewerx/cubeserv/cubeserv.cgi?versio
> > n=
> > 
> 1.1.1&service=WMS&request=GetLegend&layers=GCDB_INDEX:CEOWARE2
> ,CANADNAOD
> > A_L:CEOWARE2&format=image/png
> >
> > ..Tom
> >
> >
> 
>