Ploting a graph with if else statement

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I am trying to plot this graph

 fs=100000000                % samples per second
 dt = 1/fs                  % seconds per sample
 StopTime = 5E-6             % seconds
 Fc = 5E6;                    % hertz
 for t = (0:dt:StopTime)    % seconds
 if t<1E-6 
 y = 2*sin(2*pi*Fc*t)
 else
           y=0
       end
   end
       plot (t,y)              % Plot the signal versus time

The output of y is exactly what I need but I am unable to plot the graph of the y output with respect to time.

Thank you,

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Answer 1

jonas 2018-9-30

编辑：jonas 2018-9-30

0 个投票

Try this instead, no for loop needed

fs = 100000000                
dt = 1/fs                  
StopTime = 5E-6             
Fc = 5E6;                   
t = 0:dt:StopTime
y = nan(size(t))
y(t<1E-6) = 2*sin(2*pi*Fc*t(t<1E-6))
y(~(t<1E-6)) = 0
plot(t,y)

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Ron 2018-9-30

Thank You this works!!

jonas 2018-9-30

Happy to help! Don't forget to accept the answer please!

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Ploting a graph with if else statement

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