MATLAB: Transfer data from a figure to variable

simulinkspectrum frequency plot transfer data

Hi,

I'm using Matlab Simulink to simulate the behavior of a electric circuit.

I obtain the average transfer function by using "averaging spectrum analyzer" block. What i need to do is to obtain the data of this average transfer function. I mean, i want to obtain in a vector x the range of frequency and in a vector y the range of gain.

How can i do it?

Thanks in advanced, Néstor

Best Answer

open axes proprieties of your figure,then click "more proprieties"

select the second plot then click "more proprieties" you will find your data in xdata and ydata
do the same to the third plot

be sur that you select the plot (not only the box)

 x=get(gco,'XData');y=get(gco,'YData');

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MATLAB: I need to get the data from this figure

The plot appears to have only Bar objects.

Try this:

F = openfig('untitled.fig');
Ax = gca;
hBar = findobj(Ax.Children, 'Type','Bar');
X = hBar.XData;
Y = hBar.YData;

Finding that took a bit of exploring.

MATLAB: How to plot existing MATLAB plots from different figures all in one figure using SUBPLOT in MATLAB

One way to achieve this is to obtain the 'XData' and 'YData' of all the children of the figures that need to be replotted and then plot them again in one figure using the SUBPLOT command.

The following example shows how to obtain the 'XData' and 'YData' for a plot from a figure:

plot(1:10)  % for example this is your existing figure
ha1 = get(gca,'Children') %this returns the children of the axes
a1 = get(ha1,'Xdata') % obtain the XData
b1 = get(ha1,'Ydata') % obtain the YData
figure;   % new figure
plot(a1,b1) %plot the data again

Similarly, obtain the XData and YData of all other figures then use SUBPLOT to plot them in one figure.

NOTE: If the figure has multiple plots (multiple children of the axes), an array of handles will be returned by the following command:

ha1 = get(gca,'Children')

Best Answer

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MATLAB: I need to get the data from this figure

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