exact2x2 (version 1.6.4.1)

power2grid: Create grid for root search.

Description

Used with unirootGrid

Usage

power2grid(power2 = 3, from = 10, to = 1, dolog = TRUE)
power2gridRatio(power2 = 3)
power2gridDifference(power2 = 3)

Arguments

power2

positive integer, determines length of grid, length(grid)=1+2^power2

from

lowest value of grid

to

highest value of grid

dolog

logical, make grid equally spaced on the log scale?

Value

a vector for grid search of length 1+2^power2 for use in unirootGrid

Details

The function power2gridRatio gives a grid for searching from 0 to Inf equally spaced on the log scale, with about half of the observations from 0.5 to 2. and power2gridDifference gives an equally spaced grid for searching from -1 to 1.

See Also

unirootGrid

Examples

# NOT RUN {
power2gridRatio(3)
power2gridDifference(3)
power2grid(3,from=-1,to=1,dolog=FALSE)
power2grid(3, from=1,to=9, dolog=FALSE)
power2grid(3, from=1,to=9, dolog=TRUE)

# }