How to establish the handle value of a personalized plot function?

I need to develop a program that will:

(a) plot one set of data into a figure at a time,

(b) when the next set of data is plotted, the previous plot needs to be removed.

I definied my own functioned as below:

function plot1(a, b, c, d)
      plot ...
      plot ...
      plot ...
      .... % a total of about 50 plots
end

It works very well by calling the program as below:

  plot1(a, b, c, d)

Here is the problem. Because I need to remove the previous plot, I'm trying to give the plot a handle, so that I can use delete(app.A) to remove the previous plot.

  app.A = plot1(a, b, c, d)

Now Matlab is complaining:

  Too many output arguments.

How do I rewrite my plot program so that it can be assigned with a handle like the normal Matlab function "plot".

Many thanks.

Answer 1

[Walter Roberson]

function plots = plot1(a, b, c, d)
      plots(1) = plot ...
      plots(2) = plot ...
      plots(3) = plot ...
      .... % a total of about 50 plots
end

However, have you considered just using

  cla(app.AppropriateAxesHandle);

or

  delete(findobj(app.AppropriateAxesHandle, 'type', 'line'));

[Leon]

Many thanks for the amazing resolution!

delete(findobj(app.AppropriateAxesHandle, 'type', 'line'));

The above recommended solution solves my issue beautiful.