# how to plot decaying exponential

조회 수: 29(최근 30일)
Romio 2019년 5월 6일
댓글: gonzalo Mier 2019년 5월 6일
Hello,
I'd like to plot a decaying exponential function similar to this plot, while being able to vary the spike time and rate of decay as well as the amplitude.
I tried to use the following script but it does not produce a similar plot
t=0:100;
spike_time = 20;
spike_peak =0.2;
spike_decay =5;
g = zeros(length(t),1);
for k = 1:length(t)
if t(k) <= spike_time
g = 0;
else
g = spike_peak*exp(-(t-spike_time)/spike_decay);
end
end
plot(t,g)

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### 채택된 답변

gonzalo Mier 2019년 5월 6일
Congratulation! You have your algorithm almost working, but you are using vector when you should be using scalars (As you have your code implemented. Try with this:
t=0:100;
spike_time = 20;
spike_peak =0.2;
spike_decay =5;
g = zeros(length(t),1);
for k = 1:length(t)
if t(k) <= spike_time
g(k) = 0;
else
g(k) = spike_peak*exp(-(t(k)-spike_time)/spike_decay);
end
end
plot(t,g)
As I said before, good job
##### 댓글 수: 2표시숨기기 이전 댓글 수: 1
gonzalo Mier 2019년 5월 6일
Don't forget to accept the answer if it worked for you ;)

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