Jody,
The spec says this for the height/width parameters to GetLegendGraphic:
WIDTH
Optional
This gives a hint for the width of the returned graphic in pixels.
Vector-graphics can use this value as a hint for the level of detail to
include.
HEIGHT
Optional
This gives a hint for the height of the returned graphic in pixels.
So, they're "hints" and non-prescriptive. My concern was with the
<LegendURL> tag in the capabilities file which I think is prescriptive
(well, descriptive and accurate). So, we can ALL be right!
GISs like ArcView (and even the web WMSes -- see mapserver legends) seem
to have a "large" legend - large enough to have actual meaning.
dave
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dblasby@anonymised.com wrote:
Jody,
The spec says this for the height/width parameters to GetLegendGraphic:
Okay - that is most unfriendly.
Only really works if:
a) you known how many rules you have
b) you even have access to the SLD document to begin with
What do you recommend? That I should just take the first 16x16 and hope for the best?
Right now I just ignore the graphic provided by any WMS that provides me images that are not the same size I asked for.
Incidently what is the problem with returning a graphic of the requested size? I see some WMS servers including labels for example.
Is the visualization of rules really what is driving/breaking this for me?
Jody
WIDTH
Optional
This gives a hint for the width of the returned graphic in pixels.
Vector-graphics can use this value as a hint for the level of detail to
include.
HEIGHT
Optional
This gives a hint for the height of the returned graphic in pixels.
So, they're "hints" and non-prescriptive. My concern was with the
<LegendURL> tag in the capabilities file which I think is prescriptive
(well, descriptive and accurate). So, we can ALL be right!
GISs like ArcView (and even the web WMSes -- see mapserver legends) seem
to have a "large" legend - large enough to have actual meaning.
dave
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