neuroim2 (version 0.8.5)

coord_to_grid: convert n-dimensional real world coordinates to grid coordinates

Description

convert n-dimensional real world coordinates to grid coordinates

Usage

coord_to_grid(x, coords)
# S4 method for NeuroSpace,matrix
coord_to_grid(x, coords)
# S4 method for NeuroSpace,numeric
coord_to_grid(x, coords)
# S4 method for NeuroVol,matrix
coord_to_grid(x, coords)
# S4 method for NeuroVol,numeric
coord_to_grid(x, coords)

Value

A numeric matrix of grid coordinates.

Arguments

x

the object

coords

a matrix of real world coordinates

Examples

# Create a simple 3D volume
bvol <- NeuroVol(array(0, c(10,10,10)), NeuroSpace(c(10,10,10), c(1,1,1)))
coords <- matrix(c(.5,.5,.5, 1.5,1.5,1.5), ncol=3, byrow=TRUE)
grid <- coord_to_grid(bvol, coords)
world <- grid_to_coord(bvol, grid)
all.equal(coords, world)