NESC0709 NIXLIN

NIXLIN, Function Minimization Using Direct Search Simplex Method for Nonlinear Equation Fit

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: NIXLIN

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
NIXLIN	NESC0709/01	Tested	17-SEP-1980

Machines used:

Package ID	Orig. computer	Test computer
NESC0709/01	IBM 3033	IBM 3033

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3. DESCRIPTION OF PROBLEM OR FUNCTION

NIXLIN  performs  a  function
minimization by  a direct  search iterative  process that  has the
advantage of requiring no derivative evaluations.  This particular
version is well-suited to fitting nonlinear models to experimental
data  and to  the solution  of systems  of nonlinear  simultaneous
equations.

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4. METHOD OF SOLUTION

The program uses the Simplex method for
function minimization.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The dimensions may
be increased to accommodate larger problems.

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6. TYPICAL RUNNING TIME

Less than 30 seconds is required for a
typical problem.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NESC0709/01	17-SEP-1980	Tested at NEADB

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10. REFERENCES

NESC0709/01, included references:

J.  A.  Nedler and  R.  Mead:
A Simplex  Method  for Function  Minimization,
Computer  Journal,  Vol.  7, pp.  308-313, 1965

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11. MACHINE REQUIREMENTS

The program requires 240K bytes to compile,
76K bytes to execute.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NESC0709/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: OS/360.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHOR

                 L. M. Arnett
                 Savannah River Laboratory
                 E. I. duPont de Nemours and Company, Inc.
                 Aiken, South Carolina  29801

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16. MATERIAL AVAILABLE

NESC0709/01