plotting two curve in one axes

Hi all; I have to plot two functions in same axes these functions in two different pushbutton functions, the code so far is as follow:

- function pushbutton1_Callback(hObject, eventdata, handles)

     x = [31 32 32 33 34 35 35 37 37];        % data 1
     y = [0 3 11 29 53 80 98 126 150];       % maximum power 
  plot(handles.axes,x,y)

- function pushbutton2_Callback(hObject, eventdata, handles)

     x = [31 32 32 33 34 35 35 37 37];        % data 1
      y1=y*0.7;                               % actual power
  plot(handles.axes,x,y1)

the problem that i am facing is when plotting the second function the first is disappear. how to overcome this issue ?? please help and advice.

Sam

Answer 1

[Samer Husam]

by using (handles.axes) so need to hold on this axes, if using hold on only its not working it will work only with plot(x,y) not with plot(handles.axes,x,y) the code should be as follow:

- function pushbutton1_Callback(hObject, eventdata, handles)

     x = [31 32 32 33 34 35 35 37 37];        % data 1
     y = [0 3 11 29 53 80 98 126 150];       % maximum power 
  plot(handles.axes,x,y)

- function pushbutton2_Callback(hObject, eventdata, handles)

     x = [31 32 32 33 34 35 35 37 37];        % data 1
      y1=y*0.7;                               % actual power

   hold(handles.axes,'on')

   plot(handles.axes,x,y1)

Answer 2

[Azzi Abdelmalek]

 hold on;
 plot(handles.axes,x,y1)

[Samer Husam]

thanks for ur suggestion.

but I have tried this way, but it get the same results. only one curve will be showing. so how to keep both curves ??

[Azzi Abdelmalek]

what is the name of your axes object, by default it's axes1, have you changed it? if not then

 hold on;
 plot(handles.axes1,x,y1)

have you any error message?

[Samer Husam]

i am not getting any error, it just plot one function in the axes (not two curves) so how to get both plotted on one axes

[Azzi Abdelmalek]

post the full code of your function (the one involved with plot)

[Samer Husam]

- function pushbutton1_Callback(hObject, eventdata, handles)
   [num,T,vT] = xlsread('Excel 1.xlsx','Sheet1');      
   x = num(:,1);        % Time column
   y = num(:,4);       % maximum power column   

     plot(handles.axes8,x,y,'-ob',...
                            'LineWidth',1,...
                            'MarkerEdgeColor','b',...
                            'MarkerFaceColor','b',...
                            'MarkerSize',6)
     datetick(handles.axes8,'x' ,15)

- function pushbutton2_Callback(hObject, eventdata, handles)

d= str2double(get(handles.edit51,'string'));     %derating factor
y1= y*d;                                         %actual power

hold on;
 plot(handles.axes8,x,y1,'-or',...
                            'LineWidth',1,...
                            'MarkerEdgeColor','r',...
                            'MarkerFaceColor','r',...
                            'MarkerSize',6)
 datetick(handles.axes8,'x' ,15)

this is the full code, but when I plot the actual power (the second function the) the first curve disappear.

[Azzi Abdelmalek]

You said a full code. What are y and x in function 2. Not defined

[Samer Husam]

(x) and (y) is data reading from the excel file, where x is the time and y is the maximum power. so its plot as a power against the time, so the user might define the de-rating factor to plot the actual power. thanks for your time is replying here

[Azzi Abdelmalek]

You said it s a full code but in your second function there is no xlsread

[Samer Husam]

I just remove it cause its not the main of what i am asking for. when I am using the (hold on) the first function is disappear, so I wounder how to overcome this issue ?

[Azzi Abdelmalek]

to find the problem, it's usefull to read the full code, at least of functions that are involved. Because there is no problem with

hold on;
plot(handles.axes,x,y1)

I did it and it works

Answer 3

[Jürgen]

use the hold function

hold on for example will help

regardsJ