problems including pdf figures with ipe 6pre25

Kostas Oikonomou wrote:
> My particular figure is a scatterplot with a lot of
points, labels on 
> the axes, etc.  I don't think that's a very suitable
figure for 
> pdftoipe.  I assume this problem will be addressed in
the future,
> but for now, is there some other way to include
scalable graphics of the 
> type I'm talking about?

No, Ipe currently has no way to incorporate external PDF
data in its own 
output.  What exactly are you trying to achieve?

I currently have no plan to add this feature to Ipe.  The
reason is that 
the feature would probably disappoint many people, because:

* Ipe doesn't know PDF.  So Ipe cannot display the contents
of the 
included scalable figure on the screen - you would only see
an empty 
rectangle where the figure will go.

* Ipe wouldn't know how to generate Postscript output for
the included 
figure.  So saving in EPS format wouldn't work - once you
have included 
a scalable graphics in PDF format, you would no longer be
able to save 
in Postscript.  (Or Ipe would need to use an external
program like 
"pdftops" to do the conversion to EPS format).

Other than this, adding the feature would be realistic (but
not trivial 
- unlike EPS inclusion, which is simply copying of text, PDF
inclusion 
needs some parsing of the PDF document to extract the PDF
objects that 
need to be copied).

Otfried

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And why it can't include EPS files?

I think this will solve this issue because a PDF file can
always be 
(easily) converted into EPS.

Cheers,
	Manuel.


Otfried Cheong wrote:
> Kostas Oikonomou wrote:
> 
>> My particular figure is a scatterplot with a lot of
points, labels on 
>> the axes, etc.  I don't think that's a very
suitable figure for 
>> pdftoipe.  I assume this problem will be addressed
in the future,
>> but for now, is there some other way to include
scalable graphics of 
>> the type I'm talking about?
> 
> 
> No, Ipe currently has no way to incorporate external
PDF data in its own 
> output.  What exactly are you trying to achieve?
> 
> I currently have no plan to add this feature to Ipe. 
The reason is that 
> the feature would probably disappoint many people,
because:
> 
> * Ipe doesn't know PDF.  So Ipe cannot display the
contents of the 
> included scalable figure on the screen - you would only
see an empty 
> rectangle where the figure will go.
> 
> * Ipe wouldn't know how to generate Postscript output
for the included 
> figure.  So saving in EPS format wouldn't work - once
you have included 
> a scalable graphics in PDF format, you would no longer
be able to save 
> in Postscript.  (Or Ipe would need to use an external
program like 
> "pdftops" to do the conversion to EPS
format).
> 
> Other than this, adding the feature would be realistic
(but not trivial 
> - unlike EPS inclusion, which is simply copying of
text, PDF inclusion 
> needs some parsing of the PDF document to extract the
PDF objects that 
> need to be copied).
> 
> Otfried
> 
> _______________________________________________
> Ipe-discuss mailing list
> Ipe-discusscs.uu.nl
> ht
tps://mail.cs.uu.nl/mailman/listinfo/ipe-discuss
> 

		
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> No, Ipe currently has no way to incorporate external
PDF data in its own 
> output.  What exactly are you trying to achieve?

I'm using Ipe to make slides.  One of the slides (more, if
it were 
easier!) shows a plot of a bunch of data.  The plot is
generated by 
GnuPlot.  It is a scatterplot, i.e. a few thousand points at
various x,y 
coordinates, axes, and labels on the axes.  It is essential
for the plot 
to be scaleable, otherwise when the slide is projected it
looks ugly, 
unlike the rest of the slides 

As I mentioned, both the presence of text and the number of
points makes 
using pdftoipe impractical.

> I currently have no plan to add this feature to Ipe. 
The reason is that 
> the feature would probably disappoint many people,
because:
> 
> * Ipe doesn't know PDF.  So Ipe cannot display the
contents of the 
> included scalable figure on the screen - you would only
see an empty 
> rectangle where the figure will go.

Right, I understand.  While that is not optimal, I don't
find it too 
bad, especially considering the alternatives.

> * Ipe wouldn't know how to generate Postscript output
for the included 
> figure.  So saving in EPS format wouldn't work - once
you have included 
> a scalable graphics in PDF format, you would no longer
be able to save 
> in Postscript.  (Or Ipe would need to use an external
program like 
> "pdftops" to do the conversion to EPS
format).

I don't mind not saving in EPS format, PDF is fine.  In
general, if you 
were using Ipe to edit a Postscript figure, saving it in EPS
would be 
desirable.  Lacking that, saving in PDF is ok.

> Other than this, adding the feature would be realistic
(but not trivial 
> - unlike EPS inclusion, which is simply copying of
text, PDF inclusion 
> needs some parsing of the PDF document to extract the
PDF objects that 
> need to be copied).

Are you saying EPS inclusion would be easier?  In that case,
problem solved!

Under certain conditions, Ipe seems able to include PDF (via

\includegraphics{...}) right now, although it doesn't
display it. 
Whether it is able to do so or not appears to depend on the
file 
contents, and on how the EPS to PDF conversion was made. 
For the 
particular file I'm working with, ps2pdf made Ipe report an
error in the 
.pdf file generated by PDFlatex.  However, and old copy of
Adobe's 
"distill" worked.  But then I changed the .ps
file a bit, and it stopped 
working.

As a final note, I was in the end able to make a scaleable
plot that 
also shows on the screen.  I did it using the
"latex" terminal driver of 
gnuplot, which produces the plot in the form of a LaTeX
picture 
environment.  You can put that inside an Ipe text box by 
\input{filename.tex}.  The "latex" driver lacks
a lot of features, but I 
hope this is a stopgap measure.

		Kostas
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