Using the fit as a standard curve
After fitting the data to some of the functions it is possible to use the fit as a standard curve. That is the user enters y values and x values are calculated.
This button brings up the keyboard along with a new view area. The user can enter a single Y value from which the X value is calculated.
Alternatively, the user can enter a number of Y values (separated by one or more spaces) that will be averaged and then used to obtain a single X value.
Enter Button: Calculates the X or average X value and plots either an arrow (1 value) or error bars (more than 1 value), respectively.
Cancel Button: Cancels this mode and no data is saved.
Save: Saves the results of the analysis onto the end of the output and returns to the regular program mode.
