CPK Smithies wrote:
> I think you were the victim of some extreme scaling effects. Not sure,
> but with the extremely small dimensions you were using you could be
> falling victim to rounding errors or other artefacts arising from
> working at the limit of numeric precision. In particular, a stroke-width
> of 1 would have been big enough perhaps to wipe out most of the detail.

CPK,

Thanks for your help! It turns out that is it a scaling issue; widths 
greater than 1 don't show up at all, and those smaller than 0.00001 or 
so are too small to see. I hadn't explored between those extremes 
previously (paper bag time), but e.g. 0.0001 shows up fine, as does 
specifying the stroke widths in percentages.

This raises a related issue. As you might have guessed, I'm working on 
a mapping application; I'd prefer to work in geographic coordinates, 
because that allows me to generate the SVG in a scale-agnostic way.

This requires scaling those geographic shapes rather drastically (as you 
noted) to make them reasonably sized on-screen. However, I would like to 
express the stroke-width in screen pixels, _not_ geographic units. Is 
this possible? I.e., can I make the stroke-width exempt from the scaling 
transform?

Thanks,

Reid



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