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- This is a significant upgrade of the CURVEFIT program. Although format is
- retained from previous versions, the use of POWER-BASIC 2.10a has allowed
- the following modifications:
-
- 1. Speed enhanced by 40% or more for machines with no co-processor
- 2. Number of data points allowed increased from 255 to 999
- 3. Increased precision using Extended Precision variables
- 4. Capable of handling a wider range of input data without
- causing Overflow conditions. The supplied data set EXCRASH.DAT
- that used to cause this condition is now handled correctly.
- 5. When entering X-Data, if numbers are equally spaced, just
- enter the first two X numbers and then press <ENTER> for all
- further entries. Pressing <ENTER> for X-entry after the first
- two entries increments X by the difference in last two X entries.
- 6. Option to output Residuals to a file
-
- There are two copies of program supplied.
-
- CF286225 is the version optimized for '286 or higher machines. Will not
- work on 8088 or 8086 machines.
-
- CURVE225 is the version for any machine, but is significantly slower on
- '286 and higher machines than CF286225.
-
- A number of sample data files are supplied EX*.DAT and DATA*.PRN
-
- The execuatable files are compressed using LZE which cuts file size from
- over 185k down to about 70k.
-
- Source code is supplied as a standard ASCII file CURVE225.BAS
-
- This program is SHAREWARE
-
- If you use program, a registration fee of $10 is requested
-
- Send registration fee to:
-
- Thomas S. Cox
- 102 Evergreen Street
- Easley, SC 29642
-
- A copy of the latest version will be supplied upon receipt of the registration
- fee. Unless otherwise specified, the program will be supplied on a 360k disk.
- It can be supplied on 3-1/2 disks if so requested--no additional charge.
-
- The programs were updated on 5/9/92 as was documentation. Last released
- version is 2.25a.
-
- Note: The best commercial program that I have seen for CURVEFITTING is
- TABLECURVE, version 3.10 which has very nice graphs. It is sold
- by Jandel Scientific. It also has a very nice price, $495. This
- program fits many thousands of curves and is extremely powerful.
- It handles polynomial curves also. I have no vested interest in
- the program other than to say I have it at work and it works well.
-
- There is some discount if you order from The Programmer's Connection.
-
- The reference book that has the equations used in CURVEFIT is out
- of print and I don't know of any sources that might have it.
-