how can a plot a function given by the user in app design?

I am developing an application that will allow to graph two imput signals given by the user and then calculate and graph the convolution of these, however, I do not know how I could read the function entered by the user in the text field to be able to graph it, i understand that it reads it as a string and i need to convert it somehow to a expression. I appreciate any help or advice, this is my first time trying app designer so I'm a bit lost.

Here I leave the part of the code where I'm having problems.

% Properties that correspond to app components

properties (Access = public)

UIFigure matlab.ui.Figure % UI Figure

LabelEditField matlab.ui.control.Label % x(t)

FInput matlab.ui.control.EditField % sin(pi*t...

LabelEditField2 matlab.ui.control.Label % h(t)

SInput matlab.ui.control.EditField % t./t

Start matlab.ui.control.Button % Start

xt matlab.ui.control.UIAxes % First Input

yt matlab.ui.control.UIAxes % Second I...

LabelNumericEditField matlab.ui.control.Label % x1

x1range matlab.ui.control.NumericEditField % [-Inf Inf]

Label matlab.ui.control.Label % x2

x2range matlab.ui.control.NumericEditField % [-Inf Inf]

Label2 matlab.ui.control.Label % h1

h1range matlab.ui.control.NumericEditField % [-Inf Inf]

Label3 matlab.ui.control.Label % h2

h2range matlab.ui.control.NumericEditField % [-Inf Inf]

Label4 matlab.ui.control.Label % t1

t1 matlab.ui.control.NumericEditField % [-Inf Inf]

Label5 matlab.ui.control.Label % t2

t2 matlab.ui.control.NumericEditField % [-Inf Inf]

NumericEditField matlab.ui.control.NumericEditField % [-Inf Inf]

end

methods (Access = private)

% Code that executes after component creation

function startupFcn(app)

end

% Start button pushed function

function StartButton(app)

%Initialization

t0 = app.t1.Value;

tf = app.t2.Value;

t = t0:tf; %Time Range

X = zeros(1,length(t)); % First Input signal

x1 = app.x1range.Value;

x2 = app.x2range.Value; % Range of Input Signal

H = zeros(1,length(t)); % Second Input signal

h1 = app.h1range.Value;

h2 = app.h2range.Value; % Range of Second Input Signal

Y = zeros(1,length(t)); % Convolution output

xh1 = x1+h1;

xh2 = x2+h2; % Range of Convolution output

%Input Signals

x = app.FInput.Value;

x(t==0)=1; % Generate First Input (Sinc default)

h = app.SInput.Value;

h(t==0)=1; % Generate Second Input (Impulse Response default)

%H(t>=h1&t<=h2) = h(t>=h1&t<=h2); % Fit First Input signal within range

X(t>=x1&t<=x2) = x(t>=x1&t<=x2); % Fit Second Input within range

%Plot Input Signals

plot(app.xt,t,X,'b')

end

end

Answer 1

[Yongjian Feng]

It seem like all you need is this.