[GRASSLIST:4481] Re: how to generate high resolution image?

[Victor Wren]

> Xueming Wu wrote:
> 
> > I cann't find any tool that can run under unix/linux and
> > convert ps to wmf through the web. I tried to use "gs".
> > And the image is better. But the size of image is too
> > large. 
> > 
> > Any idea or suggestion? 

 
> Glynn Clements <glynn.clements at virgin.net>

> It may be possible to use a "chain" of converters, e.g. convert
> PostScript to PDF, then PDF to WMF. [I only mention WMF because it's
> one of Microsoft's own formats; I have no idea what PowerPoint
> actually accepts.]

Powerpoint's support of vector formats is exceptionally poor.  It does, at least 
as of Office '97, import EPS.  As far as I'm aware, DXF is entirely unsupported.  
It does accept WPG (not very useful).  If there are any converters out there for 
PostScript to EPS (does Ghostscript do this?) then Powerpoint can import it.  It 
will only display the preview image, but it will print out from the vector image.  
Support for EPS is much better in the Mac version of Office (and always has 
been) but portability may suffer.

I'm not sure what he's saying about the "size of the image" being too large.  Is it 
creating too large a file, or is it too big for the page?  If the latter, it can just be 
dragged down to the correct size with no loss of detail (the whole advantage of 
a vector format).  If the former, using EPS should help (WMF simulates curves 
via straight line segments -- boo hiss! -- which makes for much larger files, not 
to mention poor quality curves [EMF was supposed to fix this, but it's WORSE, 
supporting only circular curves, which is almost as useless as only supporting 
straight segments] -- though the presence of a bitmap preview in EPS will grow 
the filesize somewhat.)

Victor Wren



Victor Wren
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