Computer Programs

NEA-0507 CURFIT/SURFIT.

NEA-0507 CURFIT/SURFIT.

CURFIT SURFIT, 2-D Polynomial Least Square Fit to Experimental Data

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, CPU, FEATURES, AUXILIARIES, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: CURFIT/SURFIT.

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2. COMPUTERS

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Program name	Package id	Status	Status date
CURFIT/SURFIT	NEA-0507/02	Tested	01-NOV-1977

Machines used:

Package ID	Orig. computer	Test computer
NEA-0507/02	IBM 370 series	IBM 370 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

CURFIT fits a polynomial to experimental data. SURFIT fits a surface in two variables to experimental data.

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4. METHOD OF SOLUTION

The classical least squares method is applied to a polynomial in standard form. The resulting normal equations are solved by Gaussian elimination.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM: Only low power polynomials/surfaces should be fitted.

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6. TYPICAL RUNNING TIME

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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-0507/02	01-NOV-1977	Tested at NEADB

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10. REFERENCES

NEA-0507/02, included references:

   - A. J. Colville;
     Least Squared Error Curve (CURFIT) and Surface (SURFIT)
     Matching Routines. DPTN/713 (Sept. 29, 1975).

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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0507/02	FORTRAN-IV

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13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

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15. NAME AND ESTABLISHMENT OF AUTHOR

      A.J. Colville
      OECD High Temperature Reactor Project Dragon
      AEE, Winfrith
      Dorchester, Dorset U.K.

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16. MATERIAL AVAILABLE

NEA-0507/02

File name	File description	Records
NEA0507_02.001	INFORMATION	2
NEA0507_02.002	DUMMY MICROFICHE PLOTTER ROUTINES - F4	42
NEA0507_02.003	CURFIT SOURCE PROGRAM - F4 -EBCDIC	399
NEA0507_02.004	CURFIT JCL	3
NEA0507_02.005	CURFIT SAMPLE PROBLEM INPUT DATA	38
NEA0507_02.006	CURFIT SAMPLE PROBLEM PRINTED OUTPUT	252
NEA0507_02.007	CURFIT SAMPLE PROBLEM PUNCHED OUTPUT	24
NEA0507_02.008	SURFIT SOURCE PROGRAM - F4 -EBCDIC	549
NEA0507_02.009	SURFIT JCL	2
NEA0507_02.010	SURFIT SAMPLE PROBLEM INPUT DATA	18
NEA0507_02.011	SURFIT SAMPLE PROBLEM PRINTED OUTPUT	84

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17. CATEGORIES

P. General Mathematical and Computing System Routines

Keywords: least square fit, one-dimensional, polynomials, two-dimensional.