Other

Charlie was a chemist, but Charlie is no more, what Charlie thought was H₂O, was H₂SO₄

DFT and FFT Everything you want to know about the Fast Fourier Transform (and Discrete Fourier Transform) including the 2 dimensional FFT. Windows Welch, triangular, Bartlett, Hanning, Hamming, Kaiser.

Image filtering in the frequency domain Fourier method of designing digital filters

Why is the winner of the Miss Universe contest always from planet Earth?
Rob Hall

Sonification of a pulsar (Vela, PSR B0833-45) Sonograms Creating time - frequency plots.

I could be bounded in a nutshell and count myself a king of infinite space. Shakespear

Interpolation methods (low order), Trilinear Interpolation and Linear Regression. As well as a rather perverse way of fitting a curve through any points.

There cannot be a language more universal and more simple, more free from errors and obscurities,....more worthy to express the invariable relations of natural things than mathematics. It interprets all phenomena by the same language, as if to attest the unity and simplicity of the plan of the universe, and to make still more evident that unchangeable order which presides over all natural causes.
Joseph Fourier

AutoRegression Analysis (AR) Gaussian Elimination Algorithm for solving simultaneous solutions Least Squares Method

In any field find the strangest thing and then explore it.
John Archibald Wheeler

Quaternion Maths Determinant and inverse of a square matrix Mean and Variance, center of mass and radius of gyration.

Correlation Introduction to auto-correlation and cross-correlation with an example of 2D cross correlation for pattern identification. Random number generator Uniform and Gaussian random number generator library. The generation of random numbers is too important to be left to chance. Fourier Outline Analysis Including a Macintosh application that calculates radial series for shape analysis.

Prediction is difficult, especially of the future.
Niels Bohr

Miscellaneous functions Includes the following functions: Alpha, Zeta, SINC, Factorial Gamma, Gabor, Sigmoid, Gompertz, Biexponential. As well as the Gaussian (Normal), Poisson, Gamma, Exponential, Rayleigh, and Rice distributions. Also: trigonometric relationships, and various series and sequences. C/C++ libraries Discrete Stepped Frequency Modulated Chirp

You are totally unique, just like everyone else.
Sigmund Freud

Miscellaneous numbers: for example, phi, pi, e, a description of sumerian arithmetic, and a integer squareroot algorithm.

Astro-photography Syzygy: Transit of Venus, 8 June 2004 Solar eclipse, 4 Dec 2002 Leonid meteor shower 18 November 2001 Total Lunar Eclipse, 16 July 2000 Comet C/2006 P1 (McNaught) Perth city 2007

"And still they gazed and the wonder grew,
That one small head could carry all he (she) knew."
Oliver Goldsmith

Travel related Kuching, Sarawak, East Malaysia Shanghai, China Bangalore, India Xi'an, China Pink Lakes, Australia PInnacles, Western Australia

Auckland (Harrah Casino) Skytower A photo gallery during the construction of the Skytower in Auckland built during 1996. Contains images from the top during and after the construction as well as the 101 uses for the Skytower. Auckland Albert Park Air Raid Shelters These pages illustrate an interesting feature of Auckland history, unknown to many Aucklanders there is a maze of tunnels under a central city park, namely Albert Park. The original maps of the tunnels (1942) are presented at user selectable scales and with links to contemporary features.

Perth Skyline, April 2007

New   Stereo projection for hemispherical domes Unity game engine and iDome Data visualisation in crystal Warping patch for Quartz Composer FAQ: Spherical mirror projection for hemispherical domes
Index Papers, Articles, Seminars Exhibitions Projection Data Formats Fractals, Chaos Surfaces, Curves Modelling, Rendering Texture, Colour Geometry Fun, puzzles Other Old stuff
The contents of this web site are © Copyright Paul Bourke or a third party contributer where indicated. You may print or save an electronic copy of parts of this web site for your own personal use. Permission must be sought for any other use.