Curve Fit Application Synopsis

The Curve Fit application allows you fit X-Y data to a curve you
select.  Curve types supported are polynomial, log-log polynomial,
and semi-log in both X and Y.  For the polynomial curve types you are
allowed to select a curve order of from 1 through 10.  The fit method
used is least squares.  To help determine how good the fit is for the
curve selected, the sum (integral) of the absolute differences
(errors) and the coefficient of fit performance are reported.  The
best fits usually have the smallest sum of absolute differences and a
coefficient of performance near 1.000.  The curve is automatically
refitted anytime a change in data or curve type occurs.  Two views of
the data are supported which are a listing (List View) and a 
plot (Plot View) view.

	Starting a New Data Set

To fit a curve to a new data set, select New Data when asked to select
a data file in the opening dialog.  You immediately get the Data
dialog which has the following three pages.
o	The Curve Page allows you to define a data set title, assign 
	X & Y axes labels, select a curve type, and set the curve order.
o	The Data Page allows you to enter, import, edit,
	delete, and rearrange X-Y data pairs. 
o	The Resolution Page allows you to set the data
	precision and display-entry format.
You can also start a new data set by selecting the New Fit Button on
the tool bar.  Enter a data title, pick the curve type and order,
select the data resolution and display format, and enter or import
the data pairs.  Click OK when you are satisfied with the data set.

	Saving a Data Set

Once you have entered a data set, select the Save... or Save As...
option of File menu or the Save Button (floppy disk graphic) on the
tool bar to save the data.  Enter a file name appropriate for your
data, and click the OK button.  This application automatically
recognizes data files having a dat extension.

	Loading an Existing Data Set

To load a previously saved data set, use the opening file dialog to
find the file on your system.  When you have found the file, double
click it or click it and then click the Open Existing button to load it.
The application reads the file and displays pertinent information in the
List View.  You may reload a previously saved data set at any time by
selecting the Open Button (opening folder graphic) on the tool bar or
by selecting Open from the File menu.

	Printing

You may print the data set by selecting the Print Button (printer
graphic) on the tool bar or by selecting the Print option from the
File menu.  The hard copy will have the same format as the List View.

	Limitations

Until the application is licensed, you are limited to only 7 data
points.

The application is easy to use.  Select the file you wish to read
from any drive/directory on your system and your off and running.