Bill Gillam's Math Pages
Software/Programs

There is no charge for this version of grafprog, as long as it is only used in a non-profit environment. 

Directions and Examples Here.


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Grafprog

Calc

Hyperstudio

Shareware links

email:WBGillamJR@aol.com 

    Grafprog:A Simple Graphing program.

    The graph above is an example of using grafprog's color capabilities to match boxplots with their corresponding data plots.

    This program is written with Delphi, but I had to write a lot of Object Pascal code to implement it. The program will allow the user to design, copy and save graphs generated by functions or by spreadsheet. It also includes some statistical graphing processes. This program was designed to be a user friendly learning tool for my math classes. I personally use it to produce graphs for tests and presentations. The normal curve presented on page 1 is an example of the kind of pictures the program produces. The program will graph multiple functions,statistical graphs or data plots on the same canvas. Multiple canvases can be open at the same time. The program graphs functions, tangent lines,chords, integrals by summation, real roots, and values at a point x. Givena data set, the program will graph points vs. order, boxplots, histograms,polygons, and ogives. It will also display frequency tables. For two data sets the program will graph scattergrams and perform various regression calculations. Here is a simple function graph:

    I have two versions. One is 16-bit for Windows 3.1 (grafprog.exe).The other is 32-bit for Windows 95 (graf95.exe) . Both of these programs are 'under construction'. Functions saved in one version are not accessibleto the other. Here are some more examples:

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    Calc

    This is a calculator which is built into the grafprog program. I compiled it to a standalone. Here is a picture of the keypad. Note that it takes in a value for x in an algebraic expression.

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