[Mapserver-users] WMS GetLegendGraphic and KEYIMAGE

[Yewondwossen Assefa]

Tom,

  I understand what you suggest but at the same time, the keyimage is 
just an additional way to generate icons beside the defaut way of 
generating them (using classes defined on the layer). Thus the use of 
the legend's  keysizex and keysizey is the one that make more sense. If 
we add a specific size parameters for layers using a keyimage, we need 
to do the same for other types of layers so we can generate icons of 
diffrent siezes. What I propose as a compromise is to maybe use a 
metadata at the layer level that would be used by the LegendURL to fetch 
the width and height for that specific layer. By default the LegendURL 
would use the legend's keysizex/keysizey.  Is this acceptable ?

Later,

Kralidis,Tom [Burlington] wrote:

> 
>>-----Original Message-----
>>From: Yewondwossen Assefa [mailto:assefa at dmsolutions.ca] 
>>Sent: Wednesday, July 07, 2004 2:14 PM
>>To: Kralidis,Tom [Burlington]
>>Cc: mapserver-users at lists.gis.umn.edu
>>Subject: Re: [Mapserver-users] WMS GetLegendGraphic and KEYIMAGE
>>
>>
>>If it is for a specific layer, why not use the width and height 
>>parameters in the request ? Do you have other suggestions ?
>>
> 
> 
> I could explicitly, however if I'm a WMS client, my first inclination is
> to do a GetCapabilities, and go from there.  This is where LegendURL
> would be useful.
> 
> I suggest a KEYIMAGESIZE be added so that when LegendURL does get added
> to WMS GetCapabilities, that the width and height attributes are taken
> from KEYIMAGESIZE (or, even better, if MapServer can figure out the
> KEYIMAGE value extents :))
> 
> What do you think?
> 
> ..Tom
> 
> 
> 
>>Kralidis,Tom [Burlington] wrote:
>>
>>
>>>Right, but doesn't the legend object define a legend for 
>>
>>the *entire* 
>>
>>>WMS?  This is a specific layer level legend KEYIMAGE -- 
>>
>>i.e. I don't 
>>
>>>want all my legend image dimensions to be the size of the 
>>
>>KEYIMAGE in 
>>
>>>the one layer.
>>>
>>>..Tom
>>>
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: Yewondwossen Assefa [mailto:assefa at dmsolutions.ca]
>>>>Sent: Wednesday, July 07, 2004 10:21 AM
>>>>To: Kralidis,Tom [Burlington]
>>>>Cc: mapserver-users at lists.gis.umn.edu
>>>>Subject: Re: [Mapserver-users] WMS GetLegendGraphic and KEYIMAGE
>>>>
>>>>
>>>>Tom,
>>>>
>>>>  Here is how the size is determined :
>>>>    -  If Width and Height parameter are passed in the
>>>>GetLegendGraphic 
>>>>request , they will be used.
>>>>    - If not, it will use the size oparameters in the legend object
>>>>    - if none of the above is valid, the defaut size will be 20/20.
>>>>
>>>>Later,
>>>>
>>>>Kralidis,Tom [Burlington] wrote:
>>>>
>>>>
>>>>
>>>>>Hi,
>>>>>
>>>>>I've created a WMS, which has a layer, which defines
>>>>
>>>>KEYIMAGE in the
>>>>
>>>>
>>>>>CLASS object.
>>>>>
>>>>>>From what I understand, KEYIMAGE points to a static image file, so
>>>>>
>>>>>
>>>>>>when
>>>>>
>>>>>requesting a legend (either through OGC:WMS or classic mapserv
>>>>>mode=legend), the static image is fed back.
>>>>>
>>>>>When I request GetLegendGraphic from my WMS layer with
>>>>
>>>>KEYIMAGE, the
>>>>
>>>>
>>>>>image comes back really small (i.e. 20 x 10).  My legend
>>>>
>>>>image is like
>>>>
>>>>
>>>>>300 x 50 -- the output image looks like it scrunched into 20 x 10.
>>>>>
>>>>>Suggestions?
>>>>>
>>>>>Thanks
>>>>>
>>>>>..Tom
>>>>>
>>>>>_______________________________________________
>>>>>Mapserver-users mailing list Mapserver-users at lists.gis.umn.edu 
>>>>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>>>>
>>>>
>>>>
>>>>--
>>>>----------------------------------------------------------------
>>>>Assefa Yewondwossen
>>>>Software Analyst
>>>>
>>>>Email: assefa at dmsolutions.ca
>>>>http://www.dmsolutions.ca/
>>>>
>>>>Phone: (613) 565-5056 (ext 14)
>>>>Fax:   (613) 565-0925
>>>>----------------------------------------------------------------
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>-- 
>>----------------------------------------------------------------
>>Assefa Yewondwossen
>>Software Analyst
>>
>>Email: assefa at dmsolutions.ca
>>http://www.dmsolutions.ca/
>>
>>Phone: (613) 565-5056 (ext 14)
>>Fax:   (613) 565-0925
>>----------------------------------------------------------------
>>
>>
>>
> 
> 
> 


-- 
----------------------------------------------------------------
Assefa Yewondwossen
Software Analyst

Email: assefa at dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925
----------------------------------------------------------------