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Re: printing figures with development version

From: Ben Abbott
Subject: Re: printing figures with development version
Date: Sat, 28 Mar 2009 15:48:45 -0400

On Mar 28, 2009, at 1:38 PM, Ben Abbott wrote:

On Mar 28, 2009, at 12:17 PM, John W. Eaton wrote:

On 27-Mar-2009, Ben Abbott wrote:

| What you see is intended. You'll need to adjust the figure's paper properties. Specifically, "papersize" and "paperpositon"
| If you'd like an 6.4in x 4.8in eps file
| figure (1)
| clf
| plot (randn (50, 1))
| set (gcf, "paperunits", "inches"); # the default is "inches"
| paper_size = [6.4, 4.8];
| set (gcf, "papersize", paper_size)
| set (gcf, "papertype", "<custom>")
| set (gcf, "paperposition", [0, 0, paper_size])
| print (gcf, strcat ("figtest", version, ".eps"), "-depsc")
| This will be much simpler once the all listeners for these properties are in place.

If I print to a .eps file, I expect that the bounding box of the
figure will be fairly tight around the figure so that it may be
included directly in another document without a lot of extra
whitespace surrounding it. I think that is most useful. I also don't
expect to have to fiddle with paper properties to make that happen
(how would I know that 6.4x4.8 inches are good values?).

Earlier versions of Octave did not add extra whitespace around the
figure, so I think we will see a lot of complaints about this change
if it escapes into a stable version.

What is the motivation for the change?  Is there something good about
this design choice that I'm missing?  If the change is purely for
Matlab compatibility, then I think this is one of those things that we
should not copy.


The current implementation produces compatible behavior ... except that the BoundingBox defined by gnuplot is not tight, and the one produced by Matlab is.

The current implementation may be modified to obtain the desired BoundingBox result by changing the papersize for the eps output to ...

        papersize = paperposition + [50, 50, 100, 100]/72;

Where the paperunits are implied to be "inches". The 50pt border is a gnuplot feature.

I'll prepare a changeset.


I didn't get the description correct above. The attached changeset produces an eps-file with what I understand to be the proper bounding box.

Shall I push it?


Attachment: changeset-epsfile.patch
Description: Binary data

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