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

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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)
untitled.jpg
  4 Comments

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Accepted Answer

Image Analyst
Image Analyst on 25 Aug 2019
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);
0000 Screenshot.png
  3 Comments
Image Analyst
Image Analyst on 27 Aug 2019
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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