MATLAB Central Newsreader - extracting data from .fig in 2007a - did the proceedure change?

extracting data from .fig in 2007a - did the proceedure change?

Chris — Tue, 23 Oct 2007 15:33:04 -0400

I'd like to extract the original data from several
scatterplot .fig files. However, using load('filename','-
mat') does not produce xdata and ydata files and the file
available here "getfigdata.m" also returns an error saying
it can't find "lh".

Does anyone know where the data is actually stored in
a .fig file under 2007a?

For instance, www.gaiteri.net/intrinsic_stress.fig
is one I just need to extract this very simple information
from. Thanks!

Re: extracting data from .fig in 2007a - did the proceedure change?

Chris — Tue, 23 Oct 2007 15:48:28 -0400

better link to file

www.gaiteri.net/stress_intrinsic.zip

"Chris " <cag44@removethispitt.edu> wrote in message
<ffl47g$q5v$1@fred.mathworks.com>...
> I'd like to extract the original data from several
> scatterplot .fig files. However, using load
('filename','-
> mat') does not produce xdata and ydata files and the
file
> available here "getfigdata.m" also returns an error
saying
> it can't find "lh".
>
> Does anyone know where the data is actually stored in
> a .fig file under 2007a?
>
> For instance, www.gaiteri.net/intrinsic_stress.fig
> is one I just need to extract this very simple
information
> from. Thanks!

Re: extracting data from .fig in 2007a - did the proceedure change?

PB — Tue, 23 Oct 2007 16:02:10 -0400

Den Tue, 23 Oct 2007 15:33:04 +0000 skrev Chris :

> I'd like to extract the original data from several
> scatterplot .fig files. However, using load('filename','-
> mat') does not produce xdata and ydata files and the file
> available here "getfigdata.m" also returns an error saying
> it can't find "lh".
>
> Does anyone know where the data is actually stored in
> a .fig file under 2007a?
>
> For instance, www.gaiteri.net/intrinsic_stress.fig
> is one I just need to extract this very simple information
> from. Thanks!

I get the following error trying to download your fig:

The page cannot be found...

Anyway, this might work:

%create figure

fplot(@humps,[0,1]);
saveas(gcf,'test','fig');
close(gcf); % close fig

% open the figure again
fighandle=openfig('test.fig');
ax=findall(fighandle,'Type','line');
x=get(ax,'Xdata')
y=get(ax,'YData')

HTH

PB

Re: extracting data from .fig in 2007a - did the proceedure change?

Peter Boettcher — Tue, 23 Oct 2007 16:03:22 -0400

"Chris " <cag44@removethispitt.edu> writes:

> I'd like to extract the original data from several
> scatterplot .fig files. However, using load('filename','-
> mat') does not produce xdata and ydata files and the file
> available here "getfigdata.m" also returns an error saying
> it can't find "lh".
>
> Does anyone know where the data is actually stored in
> a .fig file under 2007a?
>
> For instance, www.gaiteri.net/intrinsic_stress.fig
> is one I just need to extract this very simple information
> from. Thanks!

load the file, then start digging through the resulting structure:

>> a = load('filename', '-mat')

a =

    hgS_070000: [1x1 struct]

>> a.hgS_070000

ans =

          type: 'figure'
        handle: 9
    properties: [1x1 struct]
      children: [2x1 struct]
       special: []

>> a.hgS_070000.children(1)
and
>> a.hgS_070000.children(2)

etc, etc, etc.

Eventually you'll find what you're looking for.

-Peter

Re: extracting data from .fig in 2007a - did the proceedure change?

Dan Haeg — Tue, 23 Oct 2007 17:26:50 -0400

"Chris " <cag44@removethispitt.edu> wrote in message
<ffl47g$q5v$1@fred.mathworks.com>...
> I'd like to extract the original data from several
> scatterplot .fig files. However, using load('filename','-
> mat') does not produce xdata and ydata files and the file
> available here "getfigdata.m" also returns an error saying
> it can't find "lh".
>
> Does anyone know where the data is actually stored in
> a .fig file under 2007a?
>
> For instance, www.gaiteri.net/intrinsic_stress.fig
> is one I just need to extract this very simple information
> from. Thanks!

This works:

s=hgload('inlet.fig')
h = findobj(s,'Type','line')
y=get(h,'ydata');
x=get(h,'xdata');

Re: extracting data from .fig in 2007a - did the proceedure change?

Chris — Tue, 23 Oct 2007 22:35:08 -0400

Hi Dan - thanks for the information.

I tried your exact code on one of my figures and findobj
always returns empty.

"Dan Haeg" <haegd@msoe.edu> wrote in message
<fflasp$skn$1@fred.mathworks.com>...
> "Chris " <cag44@removethispitt.edu> wrote in message
> <ffl47g$q5v$1@fred.mathworks.com>...
> > I'd like to extract the original data from several
> > scatterplot .fig files. However, using load
('filename','-
> > mat') does not produce xdata and ydata files and the
file
> > available here "getfigdata.m" also returns an error
saying
> > it can't find "lh".
> >
> > Does anyone know where the data is actually stored in
> > a .fig file under 2007a?
> >
> > For instance, www.gaiteri.net/intrinsic_stress.fig
> > is one I just need to extract this very simple
information
> > from. Thanks!
>
> This works:
>
> s=hgload('inlet.fig')
> h = findobj(s,'Type','line')
> y=get(h,'ydata');
> x=get(h,'xdata');
>
>

Re: extracting data from .fig in 2007a - did the proceedure change?

Chris — Tue, 23 Oct 2007 22:40:23 -0400

Re: extracting data from .fig in 2007a - did the proceedure change?

Dan Haeg — Fri, 26 Oct 2007 01:04:30 -0400

"Chris " <cag44@removethispitt.edu> wrote in message
<fflt8n$cpe$1@fred.mathworks.com>...
> Hi Dan - thanks for the information.
>
> I tried your exact code on one of my figures and findobj
> always returns empty.
>
> "Dan Haeg" <haegd@msoe.edu> wrote in message
> <fflasp$skn$1@fred.mathworks.com>...
> > "Chris " <cag44@removethispitt.edu> wrote in message
> > <ffl47g$q5v$1@fred.mathworks.com>...
> > > I'd like to extract the original data from several
> > > scatterplot .fig files. However, using load
> ('filename','-
> > > mat') does not produce xdata and ydata files and the
> file
> > > available here "getfigdata.m" also returns an error
> saying
> > > it can't find "lh".
> > >
> > > Does anyone know where the data is actually stored in
> > > a .fig file under 2007a?
> > >
> > > For instance, www.gaiteri.net/intrinsic_stress.fig
> > > is one I just need to extract this very simple
> information
> > > from. Thanks!
> >
> > This works:
> >
> > s=hgload('inlet.fig')
> > h = findobj(s,'Type','line')
> > y=get(h,'ydata');
> > x=get(h,'xdata');
> >
> >
>

If it is not too late this works for your scatter plot:

s=hgload('stress_intrinsic.fig')
h = findobj(s,'Type','hggroup')
y=get(h,'ydata');
x=get(h,'xdata');

Re: extracting data from .fig in 2007a - did the proceedure change?

pipa — Fri, 26 Feb 2010 17:23:04 -0500

Thanks!
It was really helpful!