110554 POLFIT: A General Polynomial Fitting Program Version: June 1982 Submitted by: Timothy J. Rolfe, University of Chicago, Chicago, IL Operating System: RSX-11, RT-11, VAX/VMS Source Language: FORTRAN IV V2.04 Memory Required: 15K (RT-11) to 241 pages (VAX/VMS) Keywords: Mathematical, Plotting Abstract: POLFIT is an interactive program fitting the function f(x) to data input as X,Y pairs, where f(x) has the function form f(x) = a1*x**p1 + a2*x**p2 + . . . ; the powers p are arbitrary real numbers specified by the user; and the returned coefficients provide the best least-squares fit. Data are input under user-specified format(s) from one or two files. The powers and the number of coefficients are specified interactively, and the program returns the fitted coefficients and the goodness-of-fit parameter rho**2. The program includes a line-printer/terminal plotting option allowing display of the data and the fitted curve. Media (Service Charge Code): Write-Up (AA), One RX01 Diskette (KA) Format: RT-11, 600' Magnetic Tape (MA) Format: DOS-11

The PDP-11 DECUS Software Index

The PDP-11 Home Page Tim Shoppa <shoppa@trailing-edge.com> Created: December 26, 1998