Unable to plot multiple graphs on same UIAxes (Matlab AppDesigner)

Please see my UI attahced. (Matlab App Designer)

I am importing CSV files and plotting each of the three variables(column vectors on Y Axis) against length(X axis). By using checkboxes, I want the user to specify which variables(Y axis) to plot against length(X Axis). Also by importing multiple files, the user should be plot files on same graph. For eg. import 10 files, and plot load vs length in the same graph or UIAxes. However, UIAxes is not responding as expected. It sometimes plots only 4, sometimes 2 and erases the rest of them. In short, it is unable to plot every plot that I want on the same plot.

(You can skip the code and go directly to the Plot section)

Here's my code when pushbutton(Plot) is pressed:

[filename,~] = uigetfile('*.csv;','MultiSelect','on');

              s = size(filename);
              s = s(1,2);
              f = 1;

              for f = 1:s
                  Raw=xlsread(char(filename(f)));

                  TestLength = app.TestLength.Value;
                  Points = app.NoofPoints.Value;

                  %Assigning columns to variables
                  RawTime = Raw(:,1);
                  RawExtension = Raw(:,2);
                  RawLoad = Raw(:,3);

                  %Calculating Profile
                  Distance= TestLength/(Points-1);
                  Length_Points= linspace(0,TestLength,Points);

                  % Removing slack 
                  RawLoad(RawLoad<10)=0;

                  %findpeaks(RawLoad,RawTime,'Annotate','extents','WidthReference','halfheight');
                  [peaks,ind] = findpeaks(RawLoad);
                  P = size(peaks);
                  P = P(1);

                  i=1;
                  for i=1:P
                      ext(i)=RawExtension(ind(i),1);
                  end

                  %Stiffness
                  stiffness = peaks./ext'; 

                  if app.LoadCheckBox.Value==1
                      yyaxis (app.UIAxes,'left')
                      plot(app.UIAxes,Length_Points(1:P),peaks,'-')
                      ylim(app.UIAxes,[0 600]);
                      xlim(app.UIAxes,[0 TestLength]);
                      hold(app.UIAxes);
                  end

                  if app.StiffnessCheckBox.Value==1
                      yyaxis (app.UIAxes,'left')
                      plot(app.UIAxes,Length_Points(1:P),stiffness,'--')
                      xlim(app.UIAxes,[0 TestLength]);
                      hold(app.UIAxes);
                  end

                   if app.ExtensionCheckBox.Value==1
                      yyaxis (app.UIAxes,'right')
                      plot(app.UIAxes,Length_Points(1:P),ext,':')
                      ylim(app.UIAxes,[0 10]);
                      xlim(app.UIAxes,[0 TestLength]);
                      hold(app.UIAxes);
                  end

              end

[dpb]

"I don't do GUIs" so not very adept but I note

hold(app.UIAxes);

is scattered around quite a lot, but I never see a

hold(app.UIAxes,'on');

to add plots to a given axes...

hold

by itself simply toggles the state from present state to the other; looks to me like that could possibly be the source of much of the variability of what is/is not "erased".

If you want to add more to a given axes, it must be in the "hold on" state; you need to ensure that you know whether you are adding or creating new without fail every time plot() is called.

It's more efficient to create a full array of X,Y columns and call plot just once for the array than to call it repetitively as well.

No real idea if that's the actual problem or not, just an observation.

Answer 1

[Cris LaPierre]

In appDesigner, you would use the hold(ax,___) syntax.

For example, in one of my apps, I do the following:

hold(app.UIAxes,'on')
app.Sa_avg = plot(app.UIAxes, app.pO2, SaO2_avg,':k');
app.Sa = plot(app.UIAxes, app.pO2, SaO2);
hold(app.UIAxes,'off')

[Alvaro Cuartero]

thank my friend, you saved my life

[Ajiket Patil]

Thank You Cris LaPierre

[Kadir AK]

thank my friend

[Sarvesh Shevade]

Thank you cris