GUIDE code from pre 2015 need to access the button press function and "programatically press the button" from a different m file

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Bera 2024-7-17

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评论： Fangjun Jiang 2024-7-23

采纳的回答： Fangjun Jiang

FWHM_ver_Richard.m

Hey All

As the title suggests, I am dealing with a GUIDE file from a long time ago and I need to have it running and while its running I want to be able to access one of the functions called SaveSpectrumPlotButton_Callback() on line 1933

I have not been able to find how to access it from a different file or even create an output that I could maybe access in order to activate that button. I have shared the m file below

Any help would be much appreciated/

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Bera 2024-7-17

Hey Steven first off thanks. Secondly, I am a co-op working on this code that was given to me and to be frank its quite disorganized. In summary, the code itself is a live updating camera that feeds information to a spectroscope and makes a plot of the peak and then to save this data a button called save plot has to be saved. The issue arises that I am automating a giant process of quantum dots be excited and the light being extracted. So I have to implement this code into there i.e. I have to have the main function running while I can "progammitcally press" the save button every time I'm positioned on a new quantum dot

Bera 2024-7-17

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Fangjun Jiang 2024-7-17

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In the .m file created for your GUIDE application, there is a function called SaveSpectrumPlotButton_Callback() defined. Currently, it is a local function. Other .m file outside of the FWHM_ver_Richard.m file can not call it.

I think you can cut the code for SaveSpectrumPlotButton_Callback() out and make it a separate SaveSpectrumPlotButton_Callback.m file. Then you can call this function from anywhere.

Calling it from other .m file will be equivalent as " programatically press the button".

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Voss 2024-7-18

编辑：Voss 2024-7-18

@Bera You're welcome!

I am not suggesting to change anything about the m-file you posted. I am only saying that, if you copy the SaveSpectrumPlotButton_Callback function into its own m-file, with the function itself unchanged, as @Fangjun Jiang has suggested, then you need to call it with the proper inputs:

the figure itself (which is called hObject in SaveSpectrumPlotButton_Callback)
the second argument (called eventdata in SaveSpectrumPlotButton_Callback) is unused, so you can pass anything; I suggested to pass an empty array []
the guidata of the figure (called handles in SaveSpectrumPlotButton_Callback)

Now, you point out that FWHM_ver_Richard has an output already, and that is true. Its output is the figure itself, referred to as handles.output in FWHM_OutputFcn. See the excerpt below (comments I added are preceded by "<----"):

% --- Outputs from this function are returned to the command line.

function varargout = FWHM_OutputFcn(hObject, eventdata, handles)

% varargout cell array for returning output args (see VARARGOUT);

% ...

varargout{1} = handles.output; % <---- the output of FWHM_ver_Richard is handles.output

And handles.output is set to hObject in FWHM_OpeningFcn, where in that context hObject refers to the figure. Here are the relevant lines of FWHM_OpeningFcn:

% --- Executes just before FWHM is made visible.

function FWHM_OpeningFcn(hObject, eventdata, handles, varargin)

% This function has no output args, see OutputFcn.

% hObject handle to figure % <---- hObject is the figure

% ...

handles.output = hObject; % <---- so handles.output is the figure

% ...

Again, no changes need to be made to the code; you only need to store that output to some variable (I called it hFig) when FWHM_ver_Richard is run, and pass that same variable to SaveSpectrumPlotButton_Callback (along with guidata(hFig) as the third input).

Voss 2024-7-23

@Bera: Looks like you have to specify a duration, duration unit, period, and period unit first.

Fangjun Jiang 2024-7-23

Okay, that makes sense. You are writing code to mimic the effect of pushing a button on that GUI, so the necessary fields of that GUI should all provide valid input. Make sure you can do it manually first and then try your code.

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