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[udig-devel] [jira] Created: (UDIG-416) Styles scaled with map scale? 
Styles scaled with map scale?
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         Key: UDIG-416
         URL: http://jira.codehaus.org/browse/UDIG-416
     Project: uDIG
        Type: Improvement
  Components: style  
    Versions: UDIG 1.0.RC    
 Environment: WinXP_SP2
    Reporter: Matthias basler
 Assigned to: Justin Deoliveira 
    Priority: Minor


I styled the rivers example shape file with a border (width 2) and fill color.
When zooming in and out I find that the rendered border width does not change.
When I zoom out quite a bit the whole rivers are shown as border only because
their "interiour to edge ratio" becomes quite small.

This is a general issue: Should the border width (and icon size, text size etc) be scaled according to zoom level or not?

Pro:
- A user of analogous maps would expect that the overall maplayout does not change, no matter what zoom level is chosen. That is, a river with a border of ~1/10th of the line width is pained this way on all scales. This is relevant for printing!

Contra:
- The OGC SLD probably (I don't know!) handles styles as scale-independent - so "2 points" is always the same width, no matter what scale is chosen.
- Additional UI logic would be needed to allow to set a line width etc. according to the scale.
- Text would get very small and unreadable when zooming out.

What's your opinion?

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