Search
Code Directory
 ASP
 ASP.NET
 C/C++
 CFML
 CGI/PERL
 Delphi
 Development
 Flash
 HTML
 Java
 JavaScript
 Pascal
 PHP
 Python
 SQL
 Tools
 Visual Basic & VB.NET
 XML
New Code
dbForge Studio for PostgreSQL 2.3.212
HTMLPad 2020 16.2
WeBuilder 2020 16.2
Rapid CSS 2020 16.2
Rapid PHP 2020 16.2
C# HTML to PDF 2020.8.1
Flowrigami 1.0.0.1
Vue Injector 3.3
Spectrum Analyzer pro Live 2019
Devart Excel Add-in for HubSpot 2.1
RentALLScript - Airbnb clone 2.2
SuiteCRM Theme Customization 7.11.6
iScripts NetMenus 3.1
iScripts EasyIndex 2.2
iScripts EasySnaps 2.0
Top Code
IcrediBB Bulletin Board System 1.0
Ticket Booking System 1.0
dbForge Studio for PostgreSQL 2.3.212
Kalman Filter Tutorial 1.0
Ruby FANN-Fast Artificial Neural Network 1.1.3
Ez Paypal Clone 7.4.2
Java-2-Pseudo 1.0
PID Tuning Using Genetic Algorithm 1.1
Paypal Clone Script 1.0.9
Quick Maps For Dynamics CRM 3.1
Chowtro - Online Restaurant Food Ordering Software 1.0
Online Food Ordering System 1.3.2
Linklok URL
ZLPORTIO Library 1.50
Booking system api 6.x-1.x-dev
Top Rated
Uber Clone with Safety Measure Addons 2.0
Answers phpSoftPro 3.12
phpEnter 5.1.
Quick Maps For Dynamics CRM 3.1
Single Leg MLM 1.2.1
Azizi search engine script PHP 4.1.10
Paste phpSoftPro 1.4.1
Extreme Injector 3.7
Apphitect Airbnb Clone Script 1.0
Deals and Discounts Website Script 1.0.2
Solid File System OS edition 5.1
Classified Ad Lister 1.0
Aglowsoft SQL Query Tools 8.2
Invoice Manager by PHPJabbers 3.0
ICPennyBid Penny Auction Script 4.0
Double Fourier Series Surface Plotting 1.0
File ID: 80248






Double Fourier Series Surface Plotting 1.0
Download Double Fourier Series Surface Plotting 1.0http://www.mathworks.com/Report Error Link
License: Freeware
File Size: 10.0 KB
Downloads: 6
Submit Rating:
Double Fourier Series Surface Plotting 1.0 Description
Description: Program FFT2SURF plots double Fourier series representations
for several different surfaces. The figures show effects of
the number of series terms and use of Lanczos sigma factors
to smooth Gibbs oscillations. The Fourier series of a doubly
periodic function with periods px and py has the approximate form:

f(x,y) = sum( exp(2i*pi/px*k*x)*c(k,m)*exp(2i*pi/py*m*y),...
k=-n:n, m=-n:n)

If the function has discontinuities, a better approximation
can sometimes be produced by using a smoothed function fa(x,y)
obtained by local averaging of f(x,y) as follows:

fa(x,y) = integral(f(x+u,y+v)*du*dv, -s<u<+s, -s<v<+s )/(4*s^2)

where s is a small fraction of min(px,py). Wherever f(x,y) is
smooth, f and fa will agree closely, but sharp edges of f(x,y)
get rounded off in the averaged function fa(x,y). The Fourier
coefficients ca(k,m) for the averaged function are simply
ca(k,m) = c(k,m)*sig(k,m) where the sigma factors sig(k,m) are
sig(k,m) = sin(sin(2*pi*s*k/px)*sin(2*pi*s*m/py)/...
((2*pi*s*k/px)*(2*pi*s*m/py))
( SEE Chapter 4 of 'Applied Analysis' by Cornelius Lanczos )

License: Freeware

Related: sltvlt, Small, Fraction, minpxpy, sltult, integralfx buy bvdudv, smoothed, obtained, Local, averaging, agree, closely, piskpx pismpy, sinsin piskpxsin pismpy, chapter, applied

O/S:BSD, Linux, Solaris, Mac OS X

File Size: 10.0 KB

Downloads: 6



More Similar Code

FSSF2 fit a 2-D fourier series surface over scattered 3D data. Series formulation may be altered optimization fit also available. The gui is pretty self-explanatory. Enjoy!



The output figures will show effects of the number of series terms and use of the Lanczos sigma factors to smooth the Gibbs oscillations.



It tries to approximate a f(x) function with a m term Fourier series, using the quad MATLaB function.



finite fourier series m file



this program tries to approximate the function f(x)
from -L to L with m term Fourier series using quad (MATLAB functions).



Program FFTSIGMA plots Fourier series representations with sigma approximation. The figures show effects of
the number of series terms and use of Lanczos sigma factors
to smooth Gibbs oscillations. The Fourier series of a periodic...



CHAPTER 1: FOURIER ANALYSIS
1.1 CONTINUOUS-TIME FOURIER SERIES (CTFS)
1.2 PROPERTIES OF CTFS
1.2.1 Time-Shifting Property
1.2.2 Frequency-Shifting Property
1.2.3 Modulation Property
1.3 CONTINUOUS-TIME FOURIER...



square function from a fourier derivation



In the present program three methods are used to solve a heat conduction problem. This problem is given in M. N. doOCozisik, Heat Conduction, Wiley, New York, 1980. We use pdepe, short times solution based on analytical inversion of a Laplace...



This e-book is based on the Student Edition of MATLAB 7, which includes a symbolic toolbox. The Professional Edition may of course also be used. The goal is to exploit a restricted subset of MATLAB commands and functions to explore most of the...

User Review for Double Fourier Series Surface Plotting
- required fields
     

Please enter text on the image