Convert a polynomial into character string — poly2character • ggpmisc

Differs from polynom::as.character.polynomial() in that trailing zeros are preserved.

poly2character(
  x,
  decreasing = getOption("ggpmisc.decreasing.poly.eq", FALSE),
  digits = 3,
  keep.zeros = TRUE
)

Arguments

x: a polynomial object.
decreasing: logical It specifies the order of the terms; in increasing (default) or decreasing powers.
digits: integer Giving the number of significant digits to use for printing.
keep.zeros: logical It indicates if zeros are to be retained in the formatted coefficients.

Value

A character string.

Note

This is an edit of the code in package 'polynom' so that trailing zeros are retained during the conversion. It is not defined using a different name so as not to interfere with the original.

Examples

poly2character(1:3)
#> [1] "1.00 + 2.00*x + 3.00*x^2"
poly2character(1:3, decreasing = TRUE)
#> [1] "3.00*x^2 + 2.00*x + 1.00"