why im not able plot graph in 1 sec window of 16 sample

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germanbrain common 2019-8-25

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https://ww2.mathworks.cn/matlabcentral/answers/477487-why-im-not-able-plot-graph-in-1-sec-window-of-16-sample

评论： Image Analyst 2019-8-27

clc;clear all; close all;
A=1;
x=0:0.1:1;
sample=16;
y=A*sin((2*pi./sample)*x)
figure
plot(x,y)

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dpb 2019-8-25

在 MATLAB Online 中打开

x=linspace(0,1,16);
y=A*sin(2*pi*x);
plot(x,y)

germanbrain common 2019-8-27

thnak you

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采纳的回答

Image Analyst 2019-8-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/477487-why-im-not-able-plot-graph-in-1-sec-window-of-16-sample#answer_388965

在 MATLAB Online 中打开

You didn't have anough points to see the sine wave so all you see is a traingle wave. Increase the number of points and use linspace():

numPoints = 50; % Whatever
Amplitude = 1;
t = linspace(0, 1, numPoints);
period = 0.4; % Seconds -- whatever you want;
y = Amplitude * sin((2*pi./period) * t)
plot(t, y, 'bo-', 'LineWidth', 2, 'MarkerSize', 9)
grid on;
xlabel('Time', 'FontSize', 13);
ylabel('Y', 'FontSize', 13);
title('Sine Wave', 'FontSize', 13);

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KALYAN ACHARJYA 2019-8-27

Change the period value, and see the results.

Image Analyst 2019-8-27

fs (omega) is (2*pi/period). For a 1 second, 1Hz chunk of signal, you'll have one wave of the sine wave. You can pick whatever sampling rate you want. Of course the higher it is, the more accurately you'll draw the signal.

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