Re: key text placement in SVG

[Ethan A M. <sf...@us...>]

On Friday, October 12, 2012 11:27:20 am pl...@pi... wrote:
> > - font-size="8pt" requests an 8 point font regardless of the
> >    display resolution or current scaling.  That's what gnuplot does.
> >    In theory, if you view an SVG document in a viewer that allows
> >    you to rescale the figure, the font should display as the same
> >    size even after rescaling the plot.  That is, if you shrink the
> >    figure the font does not shrink with it.
> 
> Not what I am finding in practise.

Right.  Me neither.  So theory and practice diverge once again.
Nevertheless, writing the same SVG text element twice,
once with font-size="10pt" and once with font-size="10" is
quite informative about the substantial difference between the
two descriptions.

I think I will change the svg terminal to omit units from the
font-size attribute, bringing it into line with what inkscape
does.  I am left rather confused about the level of device
dependence, but at least on typical terminal screens (90-100dpi)
this makes gnuplot's string width estimates much more accurate.

If this causes problems for someone's use case (probably when
embedding into a larger XML document) then we can consider how
to make the font-size units a driver configuration option.

	Ethan