APP DESIGNER. How can I use a variable generated by one function in another funcion?

Question

alvzcal 2020-7-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/561284-app-designer-how-can-i-use-a-variable-generated-by-one-function-in-another-funcion

评论： alvzcal 2020-7-9

采纳的回答： Mohammad Sami

I have this function in App Designer:

function LoadButtonPushed(app, event)

% Display uigetfile dialog

[fn p] = uigetfile('*.dcm','MultiSelect','on'); %#ok

dicom_files = {};

for file = 1:length(fn)

str_temp = string(fn(file));

dicom_files = [dicom_files dicomread(str_temp)]; %#ok

end

And I want to be able to use the variable dicom_files on this function:

function Slices_value(app, event)

value = app.SlicesSpinner.Value;

if exist(value, 'var') == 1

imshow(uint8(dicom_files{value}), [], 'parent', app.ImageAxes);

end

How should I do it? The code does not recognise dicom_files in the second function

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Answer 1

Mohammad Sami 2020-7-8

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/561284-app-designer-how-can-i-use-a-variable-generated-by-one-function-in-another-funcion#answer_462536

You need to create an app property dicom_files to store the values in.

Change to code view, click the property button, click public property. Type the name of the property dicom_files.

After that you can change your two functions to update this value

function LoadButtonPushed(app, event)
    % Display uigetfile dialog
      [fn p] = uigetfile('*.dcm','MultiSelect','on'); %#ok
      dicom_files = {};
      for file = 1:length(fn)
        str_temp = string(fn(file));
        app.dicom_files = [app.dicom_files dicomread(str_temp)]; %#ok
      end
end
function Slices_value(app, event)
        value = app.SlicesSpinner.Value;
        if exist(value, 'var') == 1
            imshow(uint8(app.dicom_files{value}), [], 'parent', app.ImageAxes);
        end
end