File:Periodogram.png

From Vigyanwiki

Original file ‎(1,500 × 1,000 pixels, file size: 50 KB, MIME type: image/png)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

Description
English: Developed using scipy.signal.periodogram.
Date
Source Own work
Author Kirlf
Other versions
File:Periodogram.svg is a vector version of this file. It should be used in place of this PNG file when not inferior.
File:Periodogram.png → File:Periodogram.svg
For more information, see Help:SVG.
In other languages ([//commons.wikimedia.org/w/index.php?title=Template:In_other_languages&action=edit translate this])
Alemannisch ∙ Bahasa Indonesia ∙ Bahasa Melayu ∙ British English ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ Esperanto ∙ euskara ∙ français ∙ Frysk ∙ galego ∙ hrvatski ∙ Ido ∙ italiano ∙ lietuvių ∙ magyar ∙ Nederlands ∙ norsk bokmål ∙ norsk nynorsk ∙ occitan ∙ Plattdüütsch ∙ polski ∙ português ∙ português do Brasil ∙ română ∙ Scots ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ suomi ∙ svenska ∙ Tiếng Việt ∙ Türkçe ∙ vèneto ∙ Ελληνικά ∙ беларуская (тарашкевіца) ∙ български ∙ македонски ∙ нохчийн ∙ русский ∙ српски / srpski ∙ татарча/tatarça ∙ українська ∙ ქართული ∙ հայերեն ∙ বাংলা ∙ தமிழ் ∙ മലയാളം ∙ ไทย ∙ 한국어 ∙ 日本語 ∙ 简体中文 ∙ 繁體中文 ∙ עברית ∙ العربية ∙ فارسی ∙ +/−
New SVG image
PNG genesis
InfoField
 
This plot was created with Matplotlib
Source code
InfoField

Python code

import numpy as np
from scipy import signal
import matplotlib.pyplot as plt

w_1 = 30 # frequency of the 1st component of the signal (Hz)
w_2 = 50 # frequency of the 2nd component of the signal (Hz)

a = 1.1 # magnitude of the 1st component of the signal
b = 0.6 # magnitude of the 2nd component of the signal

t = np.array([i for i in range(1,301)])/1000 # time samples (s)
fs = 1 / (t[1]-t[0]) # sampling frequency (Hz)

x = a*np.cos(2*np.pi*w_1*t) + b*np.sin(2*np.pi*w_2*t) # considered signal
f, Pxx_den = signal.periodogram(x, fs=fs, scaling='spectrum')

plt.subplots(1, 1, figsize=(6, 4), dpi=250)
plt.stem(f[:50], Pxx_den[:50], '-')
plt.ylabel('Spectrum')
plt.xlabel('Frequencies (Hz)')
plt.title('Periodogram')
plt.grid(True)
plt.show()

Licensing

I, the copyright holder of this work, hereby publish it under the following licence:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International licence.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the licence, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible licence as the original.

Captions

Add a one-line explanation of what this file represents
The linear spectrum calculated by the periodogram method.

Items portrayed in this file

depicts

inception

20 February 2019

media type

image/png

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current10:51, 20 February 2019Thumbnail for version as of 10:51, 20 February 20191,500 × 1,000 (50 KB)wikimediacommons>KirlfUser created page with UploadWizard

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitise it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from ‘https://www.vigyanwiki.in/wiki/File:Periodogram.png’