MATLAB Central Newsreader - Exporting data from .fig to matlab

Exporting data from .fig to matlab

Suske — Fri, 16 May 2008 02:15:16 -0400

Hi there:
i have a figure .fig, from which i lost the data and i want to export the data into matlab, without needing to copy point by point. I tried from properties, Xdata and Ydata, but for that i would have to copy point by point (and there are a loooot of them).
Can someone help me? I believe there is an easier way....

Tanks in advance!

Re: Exporting data from .fig to matlab

roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson) — Fri, 16 May 2008 20:04:32 -0400

In article <7246882.1210904146653.JavaMail.jakarta@nitrogen.mathforum.org>,
Suske <susana.cruz2008@gmail.com> wrote:

>i have a figure .fig, from which i lost the data and i want to export
>the data into matlab, without needing to copy point by point. I tried
>from properties, Xdata and Ydata, but for that i would have to copy
>point by point (and there are a loooot of them).
>Can someone help me? I believe there is an easier way....

It is not clear to me why you think you would have to copy point by
point?

alllines = findobj('Type',line');
nlines = length(alllines);
thepoints = cell(nlines,2);
for K = 1:nlines
  thepoints{K,1} = get(alllines(K),'XData');
  thepoints{K,2} = get(alllines(K),'YData');
end

What happens after this depends on the structure of your plot and
how much of that structure you want to preserve.

This code depends upon your plot being composed of lines, not surfaces
or patches or contours... you didn't say.
--
  "The beauties of conception are always superior to those of
   expression." -- Walter J. Phillips

Re: Exporting data from .fig to matlab

aasim Azooz — Sat, 17 May 2008 07:50:03 -0400

Suske <susana.cruz2008@gmail.com> wrote in message
<7246882.1210904146653.JavaMail.jakarta@nitrogen.mathforum.o
rg>...
> Hi there:
> i have a figure .fig, from which i lost the data and i
want to export the data into matlab, without needing to
copy point by point. I tried from properties, Xdata and
Ydata, but for that i would have to copy point by point
(and there are a loooot of them).
> Can someone help me? I believe there is an easier way....
>
> Tanks in advance!
If you can be satisfied with approximate reproduction of
the data, you can try the program 'convert' you can
download it from the file exchange it may help
Aasim Azooz