# Plotting sequences over intervals

์กฐํ ์: 18(์ต๊ทผ 30์ผ)
Connor Wright 2020๋ 11์ 13์ผ
๋๊ธ: Jon 2020๋ 11์ 20์ผ
Hello,
How would I go about plotting a seqeunce over the below intervals?
A) ๐ฅ(๐) = 2๐ฟ(๐ + 1)โ ๐ฟ(๐ โ6), โ10 โค ๐ โค 10.
B) ๐ฅ(๐) = {โฆ , 5, 4, 3, 2, 1, 5, 4, 3, 2, 1, 5, 4, 3, 2, 1, โฆ }; โ20 โค ๐ โค 12.
Thanks
##### ๋๊ธ ์: 6ํ์์จ๊ธฐ๊ธฐ ์ด์  ๋๊ธ ์: 5
Jon 2020๋ 11์ 19์ผ
I define it as a helper function in my script above

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### ์ฑํ๋ ๋ต๋ณ

Jon 2020๋ 11์ 19์ผ
You could do it like this
n = -10:10
x = zeros(length(n),1) % preallocate array of zeros to hold result
for k = 1:length(n)
% evaluate x(n)
x(k) = 2*usmpl(n(k)+ 1) - usmpl(n(k)-6);
end
% plot result
stem(n,x)
% define helper function
function delta = usmpl(n)
% define unit sample function
if n == 1
delta = 1
else
delta = 0
end
end
##### ๋๊ธ ์: 6ํ์์จ๊ธฐ๊ธฐ ์ด์  ๋๊ธ ์: 5
Jon 2020๋ 11์ 20์ผ
Great that your working on developing your skills, sounds like you have lots of talents, definitely post some new questions if you have more MATLAB questions. I've learned a lot from this site, there are a lot of knowledgeable people answering questions. By the way, you may already be beyond this, but if not the MATLAB On Ramp course is good for getting a quick start https://www.mathworks.com/learn/tutorials/matlab-onramp.html

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### ์ถ๊ฐ ๋ต๋ณ(1๊ฐ)

SaiDileep Kola 2020๋ 11์ 16์ผ
Hi Connor,
Start by copying complete code provided by Jon and usmpl is just a local function created to use. Don't use usmpl in the terminal without defining, that will solve your issue.
##### ๋๊ธ ์: 7ํ์์จ๊ธฐ๊ธฐ ์ด์  ๋๊ธ ์: 6
Jon 2020๋ 11์ 19์ผ
Oops now I feel kind of silly, didn't realize I had just continued my original comment. I will try to copy and paste into an answer.

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