function entering and plotimg

hey, i want to input a function of t(time) in my edit text box.then i want this function to be plotted with respect to time in the axes.how can i do that.

Answer 1

[Matt Fig]

Here is another.

function [] = plot_ex()
% Help goes here.
S.fh = figure('units','pixels',...
              'position',[200 300 420 420],...
              'menubar','none',...
              'name','plot_ex',...
              'numbertitle','off',...
              'resize','off');
S.ax = axes('units','pix',...
            'position',[40 90 360 290]);          
S.pb = uicontrol('style','push',...
                 'unit','pix',...
                 'position',[280 20 120 25],...
                 'string','push2plot',...
                 'callback',@pp_call,...
                 'fontweight','bold',...
                 'fontsize',12); 
S.ed = uicontrol('style','edit',...
                 'unit','pix',...
                 'string','4*t^2*cos(t)',...
                 'position',[40 20 220 25]);
guidata(S.fh,S)           
uicontrol(S.ed)

function [] = pp_call(varargin)
% Callback for the pushbutton.
S = guidata(gcbf);
ezplot(get(S.ed,'string'))

Answer 2

[Paulo Silva]

function test123
figure
axes('Position',[0.2 0.2 0.7 0.7]);
pbh1 = uicontrol(gcf,'Style','pushbutton','String','New plot',...
    'Position',[10 40 60 40],...
    'callback',@newcomb);

tx = uicontrol(gcf,'Style','edit','String','',...
    'Position',[10 10 600 30],'FontSize',20);

      function newcomb(obj,ev)
      cla
      t=0:0.01:10;
      f=get(tx,'String')
      ezplot(f)
      end
  end