Convert a verbal description of an FFT into an FFTrees object

fftrees_wordstofftrees converts a verbal description of an FFT (provided as a string of text) into a tree definition (of an FFTrees object). Thus, fftrees_wordstofftrees provides a simple natural language parser for FFTs.

fftrees_wordstofftrees is the complement function to fftrees_ffttowords, which converts an abstract tree definition (of an FFTrees object) into a verbal description (i.e., provides natural language output).

To increase robustness, the parsing of fftrees_wordstofftrees allows for lower- or uppercase spellings (but not typographical variants) and ignores the else-part of the final sentence (i.e., the part beginning with "otherwise").

Usage

fftrees_wordstofftrees(x, my.tree)

Arguments

x

An FFTrees object.

my.tree

A character string. A verbal description (as a string of text) defining an FFT.

Value

An FFTrees object with a new tree definition as described by my.tree.

See also

fftrees_ffttowords for converting FFTs into verbal descriptions; print.FFTrees for printing FFTs; plot.FFTrees for plotting FFTs; summary.FFTrees for summarizing FFTs; FFTrees for creating FFTs from and applying them to data.