plotting two curve in one axes

2012 9 18
3 个回答
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0 个投票

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

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 采纳的回答

Samer Husam
Samer Husam 2012-9-21

0 个投票

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)

更多回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2012-9-18

2 个投票

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

10 个评论
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Samer Husam
Samer Husam 2012-9-18
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
Azzi Abdelmalek 2012-9-18
编辑：Azzi Abdelmalek 2012-9-18
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
Samer Husam 2012-9-19
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
Azzi Abdelmalek 2012-9-19
post the full code of your function (the one involved with plot)
Samer Husam
Samer Husam 2012-9-20
- 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
Azzi Abdelmalek 2012-9-20
You said a full code. What are y and x in function 2. Not defined
Samer Husam
Samer Husam 2012-9-20
(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
Azzi Abdelmalek 2012-9-20
编辑：Azzi Abdelmalek 2012-9-20
You said it s a full code but in your second function there is no xlsread
Samer Husam
Samer Husam 2012-9-20
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
Azzi Abdelmalek 2012-9-20
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

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Jürgen
Jürgen 2012-9-18

0 个投票

use the hold function
hold on for example will help
regardsJ

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