Python how to plot graph sine wave

Question

I have this signal    from math import  Fs 8000 f 500 sample 16 a  0  sample for n in range sample       a n  sin 2 pi f n Fs    How can I plot a graph  this sine wave    and create name of xlabel as  voltage V   and ylabel as  sample n    What code to do this   I am so thanksful for help

User · Answer

A simple way to plot sine wave in python using matplotlib   import numpy as np import matplotlib pyplot as plt   x np arange 0 3 np pi 0 1  y np sin x  plt plot x y  plt title  SINE WAVE   plt show

User · Answer

import math import turtle  ws   turtle Screen   ws bgcolor  lightblue   fred   turtle Turtle   for angle in range 360       y   math sin math radians angle       fred goto angle  y   80   ws exitonclick

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import numpy as np import matplotlib pyplot as plt  F   5 e2            No  of cycles per second  F   500 Hz T   2 e-3           Time period  T   2 ms Fs   50 e3          No  of samples per second  Fs   50 kHz Ts   1  Fs          Sampling interval  Ts   20 us N   int T Ts        No  of samples for 2 ms  N   100  t   np linspace 0  T  N  signal   np sin 2 np pi F t   plt plot t  signal  plt xlabel  Time  s    plt ylabel  Voltage  V    plt show

User · Answer

The window of usefulness has likely come and gone  but I was working at a similar problem  Here is my attempt at plotting sine using the turtle module   from turtle import   from math import     init turtle T Turtle     sample size T screen setworldcoordinates -1 -1 1 1     speed up the turtle T speed -1    range of hundredths from -1 to 1 xcoords map lambda x  x 100 0 xrange -100 101     setup the origin T pu   T goto -1 0  T pd     move turtle for x in xcoords      T goto x sin xcoords index x

User · Answer

Setting the x-axis with np arange 0  1  0 001  gives an array from 0 to 1 in 0 001 increments   x   np arange 0  1  0 001  returns an array of 1000 points from 0 to 1  and y   np sin 2 np pi x  you will get the sin wave from 0 to 1 sampled 1000 times    I hope this will help  import matplotlib pyplot as plt import numpy as np   Fs   8000 f   5 sample   8000 x   np arange sample  y   np sin 2   np pi   f   x   Fs  plt plot x  y  plt xlabel  sample n    plt ylabel  voltage V    plt show     P S   For comfortable work you can use The Jupyter Notebook

User · Answer

import matplotlib pyplot as plt   For ploting import numpy as np   to work with numerical data efficiently  fs   100   sample rate  f   2   the frequency of the signal  x   np arange fs    the points on the x axis for plotting   compute the value  amplitude  of the sin wave at the for each sample y   np sin 2 np pi f    x fs      this instruction can only be used with IPython Notbook     matplotlib inline   showing the exact location of the smaples plt stem x y   r     plt plot x y

User · Answer

import matplotlib pyplot as plt import numpy as np   matplotlib inline x list range 10   def fun k        return np sin k  y list map fun x   plt plot x y  -     print x   print y  plt show

User · Answer

Yet another way to plot the sine wave  import numpy as np import matplotlib matplotlib use  TKAgg    use matplotlib backend TKAgg  optional  import matplotlib pyplot as plt  t   np linspace 0 0  5 0  50000          time axis sig   np sin t  plt plot t sig

User · Answer

This is another option    usr bin env python  import numpy as np import matplotlib matplotlib use  TKAgg    use matplotlib backend TkAgg  optional  import matplotlib pyplot as plt  sample rate   200   sampling frequency in Hz  atleast 2 times f  t   np linspace 0 5 sample rate      time axis f   100  Signal frequency in Hz sig   np sin 2 np pi f  t sample rate   plt plot t sig  plt xlabel  quot Time quot   plt ylabel  quot Amplitude quot   plt tight layout    plt show

[python-2.7] Python how to plot graph sine wave

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