PEG-An Interactive Least Squares Data-Fitting Program

Technical Report · Sat Feb 01 04:00:00 EST 1969

DOI:https://doi.org/10.2172/1453866· OSTI ID:1453866

Smith, Lyle B. ^[1]

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1. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

An interactive program for data-fitting by the method of least squares is discussed in some detail. The program was implemented on an IBM 360/75 and 360/91 with an IBM 2250 Mod II display unit as the man-machine interface. First the least squares data-fitting problem is briefly discussed. That is followed by a short description of the direct search minimization method which was chosen to handle the nonlinear least squares problems. Finally, the displays utilized in the interactive data-fitting process are depicted by photographs of the 2250 screen during operation, and an extensive discussion of the use of the program is given. The program was written in FORTRAN IV for ease of implementation and to achieve some degree of machine independence. The interaction was designed to make the program very easy to use. It is hoped that very little (if any) reference to any write-up will be necessary when using the program.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC); USDOE Office of Science (SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1453866
• Report Number(s): SLAC-R--095; SLAC--95
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING