| | | | | | | | | | | | | | | Education / Mathematics
Power-Surface: Power-Series LSq-Fitting & Saw-File - 1.4 |
Power-Surface offers linear/ quadratic/ higher-power least-square curve/ surface fitting for the given column-wise numeric data for a function z = f(x) or z = f(x,y) of one or two independent variable(s), so that the fitted function is of the form z
| | | | | Software Description:
Power-Surface offers linear/ quadratic/ higher-power least-square curve/ surface fitting for the given column-wise numeric data for a function z = f(x) or z = f(x,y) of one or two independent variable(s), so that the fitted function is of the form z = a + b.x + c.x2 +... or z = a + b.x + c.y + d.x2 + e.xy + f.y2 +... respectively. To perform the fitting, the aforesaid algebraic power series function is assumed, and then the sum of the squares of deviations of z-values (for the given points) from the assumed function-value is minimized, thereby generating a set of linear simultaneous equations. This set is then auto-solved by standard Gaussian-elimination method, giving the fitting parameters (coefficients) a, b, c etc. (users should refer to the tutorials). To avoid calculation errors, constant factors and decimal-points in the given (x,y,z) data are first shifted but finally re-corrected. The Saw-File subroutine allows vertical copying/pasting of numeric data columns from text files. | | Software Requirements: | | RAM: 32MB; HD: 10MB | | This software is designed to run on the following operating systems: | | Windows 98, Windows, Windows Me, Windows NT, Windows 2000, Windows XP, Windows 2003 | | Power-Surface: Power-Series LSq-Fitting & Saw-File Keywords: | | | | Download Link of Power-Surface: Power-Series LSq-Fitting & Saw-File 1.4: | | | | | Screenshot |  | | | | | | Feedback Summary: | Show All Feedback (0) | | | |  | | | | | Power-Surface: Power-Series LSq-Fitting & Saw-File related software | | Title / Version / Description | Size | License | Price | | CurvFit 5.09 | 1.4 MB | Shareware | $53.85 |  CurvFit (tm) is a curve fitting program for Windows 95/98. Lorentzian, Sine, Exponential and Power series are available models to match your data. A Lorentzian series is highly recommended for real data especially for multiple peaked and/or valleys data. CurvFit is an example of Fortran Calculus programming... ie. minutes to solve, days or years to understand solution and what it implies (e.g. wrong model, sampling rate error, etc.).... |
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