MATLAB: Copy the curve in the Axes of a Figure to the Axes of a GUI

copyobjfigurefindobjguiguidetransfer figure

I have a figure (simple sine curve). Figure 1. And I have an Axis in a GUI (guide), with the tag axes1.

I want to copy this cruve from Figure 1 to the GUI.

I have tried the following on a button in the guide code:

FigAxes = findobj('Parent',figure(1),'Type','axes');
axes(handles.axes1);
plot(FigAxes);

I also tried to use findobj for the axes in the GUI (guide) and then use copyobj. and i dont know how.

FigAxes = findobj('Parent',figure(1),'Type','axes');
GUIAxes = findobj(); %code to find axes1 in guide;
copyobj(FigAxes,GUIAxes);

Nothing worked. Any suggestions?

Best Answer

If you have the handle of figure 1 as hFig then

hLine = findobj( hFig.CurrentAxes, 'Type', 'line' )

hLine = findobj( hFig, 'Type', 'line' )

would work, but again a lot depends on the figure and the axes you are taking these from - e.g. if you have multiple axes in your figure or multiple plots in your axes. In the latter case that may be what you want as it would copy all the line plots to your GUI.

Those two options would be equivalent if you just have 1 axes containing 1 line.

It is always useful to check the documentation though. This syntax of findobj is shown in

doc findobj

Where possible though it is always best to store handles when you create figure or axes or plot data though than have to find it afterwards using findobj

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One thing you could try (I haven't done so I'm not sure if it would work) is to launch your figure (i.e. the one that represent a single tab), making it invisible (you can set 'Visible' to 'off' in GUIDE itself.

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MATLAB: How to copy a graph from a figure window to an axis within a GUI

Haitham - Consider using copyobj which will allow you to copy a graphics object from one parent to another. Suppose you have the following figure which displays a single axes with the sine curve drawn on it

 figure;
 x = linspace(-2*pi,2*pi,500);
 y = sin(x);
 hCurve = plot(x,y,'r');

So we create a figure and draw the sine curve to it. The output from plot is a handle to the graphics object, and is saved to hCurve.

In a second figure we create the figure and two sup lots

 figure;
 hSub1 = subplot(2,1,1);
 hSub2 = subplot(2,1,2);

hSub1 and hSub2 are handles to the axes of each subplot. We then copy the curve to the first axes as

 copyobj(hCurve,hSub1);

And we see that the sine curve has been copied over.

You can do something similar starting with your fig_i handle. Since it is a handle to a figure, then you want to first get the handle to the axes on that figure (let's assume that you just have the one axes). You can do this as

 hFigIAxes = findobj('Parent',fig_i,'Type','axes');

So the above searches for any graphics object whose parent is the handle fig_i and whose type is axes. We then can copy the axes children (which are the graphics objects drawn on it) to the subplot

 if ~isempty(hFigIAxes)
     hAxes = hFigIAxes(1);  % assume just the one axes
     copyobj(get(hAxes,'Children'),hSub1);
 end

Try the above and see what happens!

Best Answer

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