What do these different colors of stem plot indicates?

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Vishwaraj Manur
Vishwaraj Manur 2019-11-14
评论： Vishwaraj Manur 2020-3-29
This is the stem plot for a complex value matrix of size 512x40. What does these different coluors indicates ?
How to unayse this stem diagrams?
What does the spacing of stem lines indicates ?
test.png
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Muhammad Usman
Muhammad Usman 2019-11-14
I hope you can get answers from the given below code.
clear all;close all; clc
fig = figure;
x = linspace(1,3);
y = sin(x);
vectors = [complex(x, y)];
stem(real(vectors),imag(vectors),'Color',[1 0 0])
hold on;

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回答（1 个）

Walter Roberson
Walter Roberson 2019-11-14
complex value matrix of size 512x40
stem() applied to real() and imag() of that is going to create 40 different stem plots. The colors of those plots are chosen automatically if you do not use the Color parameter.
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Vishwaraj Manur
Vishwaraj Manur 2020-3-29
What does STEM plot in MATLAB indicates? what does it indicates if stem( FFT(x(t))) of a signal x(t) is drawn ? What is its importance?

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