Contents

#!/usr/bin/env ruby
require("gsl")

N = 100

y0 = 0.1
A = 2
rr = -1.5

r = GSL::Rng.alloc()
x = GSL::Vector.linspace(0.1, 1, N)
y =  y0 + A*GSL::pow(x, rr) + 0.1*r.gaussian(1, N)

coef, err, chi2, dof = GSL::MultiFit::FdfSolver.fit(x, y, "power")
y0 = coef[0]
amp = coef[1]
rr = coef[2]
p coef
p err

GSL::graph(x, y, y0+amp*GSL::pow(x, rr), "-T X -C -g 3 -l x -l y")

Version data entries

22 entries across 22 versions & 4 rubygems

Version	Path
gsl-2.1.0.3	examples/fit/powerfit.rb
gsl-2.1.0.2	examples/fit/powerfit.rb
gsl-2.1.0.1	examples/fit/powerfit.rb
gsl-2.1.0	examples/fit/powerfit.rb
gsl-1.16.0.6	examples/fit/powerfit.rb
rb-gsl-1.16.0.5	examples/fit/powerfit.rb
rb-gsl-1.16.0.4	examples/fit/powerfit.rb
rb-gsl-1.16.0.3	examples/fit/powerfit.rb
rb-gsl-1.16.0.3.rc1	examples/fit/powerfit.rb
gsl-nmatrix-1.15.3.2	examples/fit/powerfit.rb
gsl-nmatrix-1.15.3.1	examples/fit/powerfit.rb
rb-gsl-1.16.0.2	examples/fit/powerfit.rb
rb-gsl-1.16.0.1	examples/fit/powerfit.rb
rb-gsl-1.16.0	examples/fit/powerfit.rb
rb-gsl-1.15.3.2	examples/fit/powerfit.rb
rb-gsl-1.15.3.1	examples/fit/powerfit.rb
blackwinter-gsl-1.15.3.2	examples/fit/powerfit.rb
gsl-nmatrix-1.15.3.0	examples/fit/powerfit.rb
gsl-1.15.3	examples/fit/powerfit.rb
gsl-1.14.7	examples/fit/powerfit.rb