DEQ
Adjust parabola
Adjusts a parabola to a Gaussian
2026.Apr.10 18:20:31
Mean, Stdev Gaussian μ and σ.
Spread Distance to μ, in terms of σ.
Initial guesses Parabola guesses, a, b, c (y = a x² + b x + c).
Computation mode     Mode and termination tolerance.
Minimization method Python 'optimization minimization' method
Points N. of points in plot
Max yerr, xL, xR (a: automatic) Max. y, xleft, xright for error plot.
Show values Show graph coordinates.

Adjusts a parabola to a Gaussian, to test the minimization method.

Applies the Python 'minimize' function, in the 'scipy.optimize' module.

Draws a plot of the original and the adjusted curve.


Computation structure — A PHP file (this page: 'P.adjust.php') calls (via 'action=...') an intermediate PHP file ('Adjust.php'), which (through $_POST) sends the problem data as command line arguments to a Python script. This last does the computing, and makes 'system' call(s) to 'gnuplot', for the final (temporary) webpage.

Keywords: curve fitting; minimization; Python, gnuplot.

References: Plate: AdjustParabola

• Python minimize [in Optimization and root finding (scipy.optimize)], accessed 23-Mar-2026.

• Color Names"

• (#)CISTI'2026, 21.ª Conferencia Ibérica de Sistemas y Tecnologías de Información (21.st Iberian Conference on Information Systems and Technologies), Santiago de Compostela (Spain), 17–20 June 2026.

• 1538-03-25: Clavius, Christopher (†1612-02-02, 73 yrs.).

 
 
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Created: 2026-03-23 — Last modified: 2026-04-04