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What's New Page

23/07/20 Updated my Javascript 3D Graphics Demo Page 2
Now uses SVG graphics not Canvas graphics. You can drive round a parabolic mathematical surface
as well as the blocks.
 
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6/11/19 This is a development version of a
Co-ordinate Font Text Graphics
Javascript Demo
(Uses co-ordinate defined scalable font.)
 
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14/9/19
Beta Demo JavaScript Screen Keyboard Page
You can enter text by clicking or equivalent on the keyboard on the screen.
The keyboard is defined/described by an nested array, which is easy to change.
(Code is registered on Github)
 
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30/5/19 Beta Version of PHP Written Compiler/Parser Coding tool Demo
This PHP program will pars JavaScript source code and create a label table and display it.
It will re output cleaned up code.
You can load demo source code files and edit them yourself to demo it.
 
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6/2/19 Beta Version of Javascript Expression Compiler. Can compile an expression to intermediate object code and run and graph it. Has quite good help and glossary.
(Finally went public with this version of this demo.)
 
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16/9/18 Updated Beta version of a Graphics Speed Test Javascript Demo - is now clocking pattern if required.
(Still Under Development)
 
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20/8/18 Beta version of a Graphics Speed Test Javascript Demo
(Still Under Development)
 
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9/5/18 Beta version of a Countdown and Teleport Javascript Demo
(Uses co-ordinate defined scalable font.)
 
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28/4/18 Javascript Square/Rectangular Pulse Fourier Approximation Waveform Coefficient Calculator Program now calculates and can display the integral series of the fourier series of the Square/Rectangular Pulse series.
 
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26/4/18 Uploaded a Random 4 Word Password Generator Page.
Generates highly secure 4 word random passwords from a list of 100 words.
 
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18/2/18 Fixed bug in Javascript Fourier Series Plotting Demo.
Now works almost completely correctly reloading it's own webquery if you change any of the data.
 
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14/2/18 Fixed bug in Javascript Square/Rectangular Pulse Fourier Approximation Waveform Coefficient Calculator Program means it now displays in correct range (0 - 2π) and can also display multiple waveform cycles.
 
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6/2/18 Updated the Javascript Square/Rectangular Pulse Fourier Approximation Waveform Coefficient Calculator Program to calculate the fourier coefficients for a square/rectangular pulse positioned anywhere along the x axis, not just at the center. This means both sin and cos terms. Previously it generated only the cos terms.   View
8/1/18 Uploaded a Javascript Square/Rectangular Pulse Fourier Approximation Waveform Coefficient Calculator Program.
This program will calculate the Fourier series coefficient values for a square/rectangular pulse, and display them.

It will also create a link to click on to display the Fourier approximation graph in the Fourier Series Plotting Demo Page. (See page for link to that page also.)

 
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1/10/17 Uploaded a PHP Ren .c wild card matching demo progam.
This pure PHP program applies two wildcard strings to a list of 'filenames' which you can edit.
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3/8/17 Uploaded a Javascript Circle Intersect Maths Test Demo Page.
(Very Geometric.)

This Program calculates the middle point x co-ordinate for a triangle specified by points P1, P2 and P3, where points P1 and P3 are on the x axis, and point P2 is an arbitrary point with x co-ordinate between points P1 and P3. (See computer generated diagram on page.)

This isn't very clever as this value is known already.

The aim is to test an algebraic equation, which doesn't use all the co-ordinate information avaialable to the program.
See page for the equation and derivation.

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10/4/17 Uploaded a Phased array Polar Plot Program.
This program does a polar plot of
the RMS intensity of a radio/radar beam
from a n element linear phased array,
allowing you to specify the beam angle,
the wavelength and dipole element spacing
(and the plotting color).
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4/12/16 Uploaded a PHP Dice Demo Program. Allows you
select the Number of Dice (1 to 6) and the Spot and
Background Colors and randomise the dice.
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4/11/16 Uploaded a Beta version of a Javascript
Pie Chart Demo Page
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5/9/16 Uploaded a Javascript Complex Exponential Series
Sine/Cos Exponential Plotting Program demo page.
Uses only +,-, *(times) and /(divide) to
calculate sine and cos functions.
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30/12/15

Uploaded a collection of demo pages.

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..

Revamped my Spirograph/Lissajous Figure PHP program and have improved the help slightly.

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..

Uploaded a x86 Assembly Code/Machine Code Windows Sinewave Plotting Demo Program.
It compiles using Visual Studios Express 2015. Unfortunately it is only compatible with Windows 8 and Windows 10, but there is a screenshot you can see if you don't have these Operating Systems.

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.. Uploaded my Javascript Polynomial Series Plotting Demo Page
Can calculate the coefficients for polynomial series expansions of ex, 1/x and square root of x
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.. Uploaded a Javascript recursive square root program View
.. Updated my Javascript 3D Graphics Demo Page 2
You can now drive round a parabolic mathematical surface
as well as the blocks.
Also fixed the Internet Explorer Bug; it now works
correctly in Internet Explorer.
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.. Javascript Fourier Series Plotting Program. Allows you to enter the coefficients of a fourier series, and will then plot them for you. View
.. PHP Spirograph and Lissajous Figure Program- draws Spirograph and Lissajous Figure Patterns View
.. PHP Pseudo 3D Graphics Program- draws a set
of boxes using pseudo 3D vector graphics.
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.. Javascript 3D Graphics Demo Page 1
Allows you to "drive" (one step at a time) around a group of
blocks on a grid.
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Javascript Variable Parameters Sine Graph Program;
Draws a Sine Graph according to the amplitude and period
(in screen pixels) you request.

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.. PHP program that displays the text of files from the server computer. It is this program that does the View Source links on the index page. View