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Quick and dirty workaround: multiply the desired size by 1.25
For instance: 10 pt type = 12.5 px
The explaination of this is that svg uses a resolution of 90 dpi for its
pixel size as default. Postscript type units are 72 dpi.
90/72=1.25
Anyway, as I expressed before, inkscape is being used by designers who
work for print as well as for screen. Typographic point size of 1/72"
is sort of "industry standard" for print, and most of the applications
using type for that output use that unit.
So Inkscape needs, at least, a unit selector in the type dialog asap.
Gez.
On Friday, March 21, 2008, 5:21:00 PM, Guillermo wrote:
GE> Quick and dirty workaround: multiply the desired size by 1.25
GE> For instance: 10 pt type = 12.5 px
GE> The explaination of this is that svg uses a resolution of 90 dpi for its
GE> pixel size as default. Postscript type units are 72 dpi.
GE> 90/72=1.25
Could you point to somewhere in the SVG spec that leads you to this conclusion?
--
Chris Lilley mailto:chris@...157...
Interaction Domain Leader
W3C Graphics Activity Lead
Co-Chair, W3C Hypertext CG
Apperently, nowhere in the SVG specification. But Inkscape documentation
makes clear that the "user units" in inkscape are defined as 90 dpi.
http://inkscape.modevia.com/inkscape-man.html
**-d* /DPI/, *--export-dpi*=/DPI/*
The resolution used for PNG export. The default is 90, which
corresponds to 1 SVG user unit (px, also called ``user unit'')
exporting to 1 bitmap pixel. This value overrides the DPI hint if
used with --export-use-hints.
I don't know why this value seems to be set on stone. I think it should
be customizable.
For me (I work mostly for print) the 90 dpi set only means that I'll get
the wrong sizes when I export or import files and a nightmare when it
comes to font sizes.
:-)
Chris Lilley escribió:
On Friday, March 21, 2008, 5:21:00 PM, Guillermo wrote:
GE> Quick and dirty workaround: multiply the desired size by 1.25
GE> For instance: 10 pt type = 12.5 px
GE> The explaination of this is that svg uses a resolution of 90 dpi for its
GE> pixel size as default. Postscript type units are 72 dpi.
GE> 90/72=1.25
Could you point to somewhere in the SVG spec that leads you to this conclusion?
On Fri, 4 Apr 2008 19:38:23 +0200, Chris Lilley <chris@...157...> wrote:
On Friday, March 21, 2008, 5:21:00 PM, Guillermo wrote:
GE> Quick and dirty workaround: multiply the desired size by 1.25
GE> For instance: 10 pt type = 12.5 px
GE> The explaination of this is that svg uses a resolution of 90 dpi for
its
GE> pixel size as default. Postscript type units are 72 dpi.
GE> 90/72=1.25
Could you point to somewhere in the SVG spec that leads you to this
conclusion?
That SVG requires a particular interpretation of px in physical units
is a common misconception resulting from uncareful reading of section
4.3.2 of the CSS2 specification, which SVG references. I've had to
disabuse people of it many, many times.
Inkscape's default interpretation of px actually is 1/90in (before
the effects of the viewbox or any user transformations), which may not
help.
Given how often people make this mistake, it's something that may be
worth explicitly clarifying in the SVG specification.
-mental
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