i can't find the mistake in the code

i created a GUI to plot multiple functions between specified limits ,their are 2 axes in the figure . i have a problem by plotting the functions , when i write them and give their limits and press the plot button , one function appears on the axes that i want , but when i run the code another time from the editor , the two functions appear , why is that happening ? (the .m file is attached below).

Answer 1

[Walter Roberson]

Please see http://www.mathworks.co.uk/matlabcentral/answers/22208-show-figure

[Elia]

i want to plot them in the same figure and axes so i tired the following code :

tm1=str2num(get(handles.Mtime1,'String'));%get M time interval [a b]
tm2=str2num(get(handles.Mtime2,'String'));

Mf1=get(handles.Mfunc1,'String');
Mf2=get(handles.Mfunc2,'String');

M1=str2func(['@(t)' Mf1]);
M2=str2func(['@(t)' Mf2]);

fplot(M1,tm1,'Parent',handles.axes1);
hold on
fplot(M2,tm2,'Parent',handles.axes1);
hold off

but it didn't work , the 2 functions are plotted again in the first axes

[Walter Roberson]

Remember to specifically hold handles.axes2

hold(handles.axes2, 'on')

and

hold(handles.axes2, 'off')

Also I would cross-check in case handles.axes2 somehow has become the same value as the first axes.

[Elia]

it works now thank you ver much , but i still having the problem as in the picture below , the functions are plotted between 50 and 100 , when i run code from the editor one more time , then the 2 functions will display in the same axes between 0 and 100 , why ist that happening ?

[Walter Roberson]

I think I would need to see your code.

[Elia]

here is the code , its name is Spro.m

[Image Analyst]

Look at your code:

fplot(M1,tm1,'Parent',handles.axes1);
hold on
fplot(M2,tm2,'Parent',handles.axes1);

Why are you surprised that they both plot to axes1 when that is where you said to plot them to? Changing M1 to M2 and tm1 to tm2 does not mean that it will ignore what you told it the parent was in the second call.

[Elia]

i corrected that mistake . but the problem now is , for example the both position or moment functions display between [0 100] , only after i run the code from the editor . when i press plot only one function is displayed in the interval [50 100]

[Image Analyst]

Use xlim() to specify whatever you want the left and right x axis values to be.

[Elia]

i did it already in the openingfcn , and i thought that when i set the XLimMode to manual the X-axis limits will stay unchanged but that didn't happen , i set the next plot property to replace children in order to don't reset the Xlim property by plotting another function . but t did not provide any result .

[Image Analyst]

You didn't attach the fig file so we can't run it. Calling xlim in the openingfcn is evidently not doing the job. Call it again right after you put stuff into the axes to "correct" it to whatever you want.