How ı plot the piecewise function
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Hi my main problem is i have a function f(t)=A , t1<t<t2
f(t)=0 , otherwise
t1=2 t2=6 A=2 how can ı plot this function
回答（2 个）
Star Strider
2018-12-19
Try this:
A = 2;
f = @(t, t1, t2) A.*((t1 < t) & (t < t2)); % Use ‘Logical Indexing’
t = linspace(0, 10);
t1 = 2;
t2 = 6;
figure
plot(t, f(t, t1, t2))
grid
4 个评论
can evkuran
2018-12-19
its giving me that empty graph im new in matlab i cannot understand the problem
Star Strider
2018-12-19
You have apparently written your own script file and saved it as ‘plot.m’.
Re-name it to ‘myPlot.m’, or to something that does not overshadow plot, or any other MATLAB functions.
Then my code should run without error.
madhan ravi
2018-12-19
This answer clearly works but you have defined some file as plot.m please change it or rename it
Star Strider
2018-12-19
As a work-around (until you re-name your script), try this:
A = 2;
f = @(t, t1, t2) A.*((t1 < t) & (t < t2)); % Use ‘Logical Indexing’
t1 = 2;
t2 = 6;
figure
fplot(@(t) f(t, t1, t2), [0 10])
grid
That should run without error.
madhan ravi
2018-12-19
Another possible approach:
A = 2;
t1=2;
t2=6;
syms t
f = piecewise(t>t1 & t<t2,A,0) ;
fplot(f,[0 10]) % 0 to 10 represent the domain of the function
2 个评论
can evkuran
2018-12-19
madhan ravi
2018-12-19
type ver in command window , suspect you don't have symbolic math toolbox
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