MATLAB 2019a ginput spectrogram issue

I recently updated to 2019a from 2018a and my code no longer works. I get the error below from the following code:

y = randn(10^5,1);
fs = 10^4
spectrogram(y,600,450,[],fs,'yaxis','minthreshold',-110);
[x_info,y_info]=ginput(1);

"Unrecognized method, property, or field 'Visible' for class 'matlab.graphics.GraphicsPlaceholder'.

Error in ginput>setupFcn (line 225)

initialState.toolbarVisible{1} = tb.Visible;

Error in ginput (line 62)

initialState = setupFcn(fig);

Error in test (line 3)

[x_info,y_info]=ginput(1);"

This code is simplified; In the actual application, I'm gathering duration data from speech samples (displayed in the spectrogram to see onset/offset).

Any tips?

Thank you

Shae

Answer 1

[Adam Danz]

Changes were made to the toolbar starting in R2018b. The ginput() function temporarily disables the toolbar on the figure. To do so, it must find the handle to the tool bar and set its Visible property to 'off'.

In your spectrogram plot, the toolbar handle is empty and the error is thrown because the empty handle doesn't have the 'Visible' property.

This is probably a bug; I'll report it.

I found a way to get around it, though. After creating the spectrogram plot and before calling ginput(), add a toolbar handle to the axes.

y = randn(10^6,1);
spectrogram(y,600,450,[],fs,'yaxis','minthreshold',-110);

axh = gca;                                             %add this
axh.Toolbar = matlab.ui.controls.AxesToolbar();       %add this

[x_info,y_info]=ginput(1);

[Shae Morgan]

this is exactly what I needed - thank you