How to Import Vectors in AppDesigner

Question

Francesco Carraro 2020-2-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/507875-how-to-import-vectors-in-appdesigner

评论： Adam 2020-2-27

Hello everyone,

I need to import a Matlab data File in a script made with Appdesigner, and plot the vectors, but I can't load properly the file.

I have to use the vectors that are storage in "('E:\UniPd\Motostudent\Dati\Prova_export_MATLAB.mat')" as variables 1/2. I've already tried to use 'load' function but Matlab gives me error. Here it is a part of the script:

classdef App_Telemetry_1 < matlab.apps.AppBase
    % Properties that correspond to app components
    properties (Access = public)
        UIFigure                matlab.ui.Figure
        UIAxes                  matlab.ui.control.UIAxes
        UIAxes2                 matlab.ui.control.UIAxes
        Slider                  matlab.ui.control.Slider
        UIAxes3                 matlab.ui.control.UIAxes
        ThrottleTextAreaLabel   matlab.ui.control.Label
        ThrottleTextArea        matlab.ui.control.TextArea
        BrakeTextAreaLabel      matlab.ui.control.Label
        BrakeTextArea           matlab.ui.control.TextArea
        LeanAngleTextAreaLabel  matlab.ui.control.Label
        LeanAngleTextArea       matlab.ui.control.TextArea
    end
    % Component initialization
    methods (Access = private)
        
      
        % Create UIFigure and components
        function createComponents(app)
            
            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [0 0 1280 720];
            app.UIFigure.Name = 'UI Figure';
            % Create Telemetry Data Portion Plot
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Data Portion')
            xlabel(app.UIAxes, '')
            ylabel(app.UIAxes, '')
            app.UIAxes.Position = [1 298 751 421];
            %time= variable 1
            %y1 = variable 2
            plot(app.UIAxes,time,y1,'r');

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Adam 2020-2-27

在 MATLAB Online 中打开

https://uk.mathworks.com/help/matlab/matlab_prog/variables-in-nested-and-anonymous-functions.html

Use the form of load which returns a structure as output (which is recommended in any case) rather than just dumping the variables into the workspace as a regular call to load will do.

doc load

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Answer 1

Emerson Nithiyaraj 2020-2-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/507875-how-to-import-vectors-in-appdesigner#answer_417590

If loading the data file is the only problem, check whether the data file is present in your current working directory.

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Francesco Carraro 2020-2-27

在 MATLAB Online 中打开

Yes I've already checked and the file is there; this is the error that Matlab shows

>> App_Telemetry_1
Error using load
Attempt to add "L003_time" to a static workspace.
 See Variables in Nested and Anonymous Functions.
Error in App_Telemetry_1/createComponents (line 40)
            load('E:\UniPd\Motostudent\Dati\Prova_export_MATLAB.mat');