MATLAB 2019a ginput spectrogram issue

1 view (last 30 days)
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

Accepted Answer

Adam Danz
Adam Danz on 22 Apr 2019
Edited: Adam Danz on 22 Apr 2019
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);
  1 Comment
Shae Morgan
Shae Morgan on 22 Apr 2019
this is exactly what I needed - thank you

Sign in to comment.

More Answers (0)

Categories

Find more on Time-Frequency Analysis in Help Center and File Exchange

Products


Release

R2019a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!