fdascript: Positions of the tip of a pen in centimeters while writing in...

In Data2LD: Functional Data Analysis with Linear Differential Equations

Description

The writing was on a horizontal surface with the position of the pen recorded 400 times per second with a background noise level of about 0.05 centimeters.

Usage

  fdascript

Format

An array object fdascript with dimensions 1401, 20, and 2. The first dimension is the number of observations in each record, the second is the records, and the third dimension is for the X and Y coordinate.

Details

The times are in seconds over an interval of 2.3 seconds, but in the analysis seconds are converted to "centiseconds" by multiplication by 100 in order to ensure numerical accuracy in the calculations.

Source

The data were published and analyzed in the 1997 and 2005 editions of the book by J. O. Ramsay and B. W. Silverman, Functional Data Analysis, and made available in the R package fda.

Examples

#  load the first record
fdascriptX <- fdascript[,1,1]
fdascriptY <- fdascript[,1,2]
#  Define the observation times in 100ths of a second
centisec <- seq(0,2.3,len=1401)*100
#  plot the script
plot(fdascriptX, fdascriptY, type="l")

Data2LD documentation built on Aug. 6, 2020, 1:08 a.m.