pracma (version 1.8.8)

titanium: Titanium Test Data

Description

The Titanium data set describes measurements of a certain property of titanium as a function of temperature.

Usage

data(titanium)

format

The format is: Two columns called `x' and `y', the first being the temperature.

source

Boor, C. de, and J. R. Rice (1968). Least squares cubic spline approximation II -- Variable knots, CSD TR 21, Comp.Sci., Purdue Univ.

Details

These data have become a standard test for data fitting since they are hard to fit by classical techniques and have a significant amount of noise.

Examples

data(titanium)
plot(titanium)
grid()