ibicubic: Bicubic interpolation on an array
In isezen/rsezen: Various tools to process data

Description Usage Arguments Value Examples

First two dimensions of the array is interpolated by bicubic grid. Other dimensions are repeated. If xlim and ylim are not set, range of first two dimensions are used. If dx and dy are not set, half of the grid spacing is used. If x matrix/array has dimnames, they are used as coordinates of the rectangular grid.

1	ibicubic(x, xlim = NULL, ylim = xlim, dx = NULL, dy = dx, par = T)

`x`	A matrix or higher dimensonal array containing the z[i,j] data values for the grid points (x[i],y[j]).
`xlim`	Lower and upper limits (x1, x2) for x-coordinate used for output.
`ylim`	Lower and upper limits (y1, y2) for y-coordinate used for output.
`dx`	Output grid spacing in x direction.
`dy`	Output grid spacing in y direction.
`par`	Use parallel package to interpolate.

Interpolated array

x <- array(rnorm(1000), dim = c(10, 10, 10))
xi <- ibicubic(x)
str(xi) # should have dim = c(19, 19, 10)

x <- array(rnorm(1000), dim = c(10, 10, 10),
           dimnames = list(seq(2, 20, 2), seq(2, 20, 2), NULL))
xi <- ibicubic(x)
str(xi) # note dimnames

xi <- ibicubic(x, xlim = c(4, 6), ylim = c(6, 8))
str(xi) # note dimnames