This file contains general information about DataFit version 3.0
by Engineered Software.

For the most up to date release notes and version information, look at
our home page on the web. The URL is: http://www.kagi.com/authors/johng/

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Table of Contents:

Section 1 - Thank you
Section 2 - What is DataFit?
Section 3 - Machine Requirements
Section 4 - Pricing, Distribution and License Information
Section 5 - Automatic Installation using SETUP.EXE
Section 6 - Contacting us
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Section 1 - Thank you!

As far as we are concerned, this should be sections 1, 2 and 3.
This program started out as a personal project, but as a result of the 
almost overwhelming response, it became a real software package.
This thank you is to you people who have taken the time to register,
and have taken the time to provide some very useful feedback.  For
those of you who have been with us through the growing pains, we
dedicate this version to you. 

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Section 2 - What is DataFit?

DataFit is a tool which simplifies the tasks of data plotting, curve 
fitting and statistical analysis.  What sets DataFit apart from similar 
curve fitting and regression programs is its ease of use.  With the 
combination of the intuitive interface, online help and wide range of 
features, it is a tool which is used effectively by both experts and 
non-experts alike.  With DataFit version 3.0 you can:

  - Enter your data in a standard spreadsheet interface, import 
    delimited data files, or cut and paste data between DataFit and 
    other Windows applications.

  - Fit your data to 54 built in commonly used scientific, statistical 
    and engineering nonlinear regression models, or define an unlimited 
    amount of your own regression models.  You can attach descriptions 
    to your own regression models, and they are saved for future use.
    Built in models automatically generate initial estimates, and you 
    can define rules for user defined models so that initial estimates are 
    calculated automatically for them as well.

  - Perform linear OR nonlinear regression on one model at a time that 
    you choose from a list, groups of models (built in model groups, or 
    define your own), or all of the models available with a simple 
    mouseclick.  The built in models are grouped together based on the 
    number of parameters and the general shape of their curves, so there
    is no need to 'blindly' solve every model.  As models are solved, 
    they are sorted automatically according to their goodness of fit.
    If you aren't an expert and aren't sure which model you should use,
    DataFit helps you make this decision.

  - View the results, including the fitted parameters along with their 
    confidence intervals, input vs. estimated data, and goodness of fit 
    information, all with a simple mouseclick. 

  - Data modification is a snap because the software keeps track of the 
    most recently solved models.

  - Attach notes to record information and conclusions about the 
    project. 
  
  - Save projects along with all of the notes and solution information.
    There is no need to keep re-solving the problem.

  - Export source code to utilize a model of your choice in a program 
    that you have written.  You can export self-documented code in 
    either BASIC or C.

  - Manipulate raw data or regression models in a built in Data 
    Calculator.  The Data Calculator can perform over 70 mathematical
    and statistical operations on curves, discreet data, or numbers.  
    The calculator can also perform some special functions, such as 
    FFT's, creating a data table based on an equation you type in, 
    or produce a "Normal" (Gaussian) curve based on user entered mean 
    and standard deviation.

  - Create plots of raw data and/or regression models by simply 
    selecting the desired information from a list of available data.  
    Each plot is completely customizable, including fonts, ranges, line 
    colors and styles, error bars, visibility, et.

  - Graphically compare the results of different models and/or data
    on the same plot window.

  - Save plots along with all of their customization.

  - Copy plots to the Windows clipboard for pasting into other 
    applications.

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Section 3 - Machine Requirements

DataFit version 3.0 is a 32 bit application, supported on 
Windows '95, and Windows NT version 3.51 or later.  

Memory Requirement - At least 4 MB RAM
Disk Space Requirement - Approximately 4 MB
Math coprocessor is not required, but will be utilized if present.

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Section 4 - Distribution and License Information

The software is being distributed as Shareware.  You may evaluate it 
free of charge for 30 days. If, after the 30 day evaluation period, you 
choose to continue using the software, you must register it.  

Register your copy of DataFit by selecting Complete Registration Form 
in the Registration Information window.  Follow the instructions shown 
to you in the registration panels.  This program relies on your support 
for continued development, and single user registration is only $50.00.  
When you register DataFit, you will receive a code that enables 
additional features in the software and become eligible for priority 
support. You will also be able to obtain free upgrades of the program 
through our Web page (address below) with which you can use your 
current registration code, until the next major release. 

To register a copy of DataFit, please use the Register program provided 
with the software to make payments. We use KAGI Registration service, 
which accepts different payment methods, including checks, mail orders, 
credit cards and invoices. If you live in the US or Canada you may also 
mail us your check or money order directly, payable to John A. Gilmore, 
at the following postal address:

Engineered Software
C/O John A. Gilmore
23 Tomey Road 
Oakdale, PA 15071
USA

Email:  johng@kagi.com

License cost:

Single user license, for personal use only: $50 per copy

Site license, for use by anyone at a company or organization at a 
single location: $200.00 

World License, for use by anyone at a company or organization at any 
location: $2000.00

Upgrades from previous versions, contact us about upgrade pricing. 
Interim upgrades are typically free and downloadable from the website. 
Major releases are typically the difference between what you paid and 
the new cost of the software if there is a price increase.

Universities using the software for classroom instruction may contact 
us for reduced rates on individual student licenses.

Distribution is permitted provided you follow these instructions:  You 
are free to make copies of the distribution archive (DTAFITxx.ZIP) 
and pass it along to others for evaluation provided that no 
modifications or additions are made to the software, its documentation, 
or any associated files.

Support is available through the addresses listed above, whether you are 
a registered user or not. Registered users will receive priority 
treatment.  E-mail inquiries typically receive the quickest responses.

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Section 5 - Automatic Installation using SETUP.EXE

To automatically install DataFit for Windows on your hard disk:

1. If you have received the software from an archive in the form of a 
   .ZIP file, copy the contents of the archive to a temporary directory 
   and unzip the files. Copy the unzipped files to a floppy disk to keep 
   as a backup.  If you have received the software on a floppy disk 
   directly from Engineered Software, the files will already be 
   unzipped. 

2. Place the disk in a floppy drive of your computer if you are 
   installing from the floppy disk.

3. Open the File menu of the Windows program manager (if you are running
   Windows 3.1 or Windows NT) and select Run, or click on the "Start" 
   button and select Run... (if you are running Windows '95).

4. In the Run dialog box, type A:SETUP or B:SETUP, depending on the  
   drive used.

5. The Setup application will prompt you for additional information as 
   required.

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Section 6 - Contacting us

If you have any questions or problems installing or setting up the 
programs, you may contact us via email at johng@kagi.com, or by US Mail 
at:

Engineered Software
C/O John A. Gilmore
23 Tomey Road 
Oakdale, PA 15071
USA

The URL for our home page is: http://www.kagi.com/authors/johng/
Don't forget the trailing slash!

For more information, see the topic "Licenses, Registration and 
Technical Support" in the online help.

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