How to plot a vector using stem?

2018 1 25
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更新时间：2018 1 25
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I want to plot x = [0 2 3 2 1 -1]. I am new in Matlab and am having issues on exactly how to plot this. I also need to plot x = [0 3 1]. x = [0 1 2 2.5 3 2.5 2 1.5 1 0 -1] . I dont want the exact code (although wouldn't mind) but I would like some guidance on how to plot.

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Star Strider
Star Strider 2018-1-25

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It is difficult to respond without providing at least some code. See the documentation for the stem (link) function for details.
For your first plot, try this:
x = [0 2 3 2 1 -1];
figure(1)
stem(x, 'filled')
set(gca, 'XLim',[0 numel(x)+1])
Ideally, you should also have an independent variable vector, however if you do not supply one, MATLAB will plot them sequentially with a ‘step’ of 1.

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