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

In bbuchsbaum/neuroim2: Data Structures for Brain Imaging Data

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 signature 'NeuroSpace,matrix'
coord_to_grid(x, coords)

## S4 method for signature 'NeuroSpace,numeric'
coord_to_grid(x, coords)

## S4 method for signature 'NeuroVol,matrix'
coord_to_grid(x, coords)

## S4 method for signature 'NeuroVol,numeric'
coord_to_grid(x, coords)

Arguments

x	the object
coords	a matrix of real world coordinates

Value

A numeric matrix of grid 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)

bbuchsbaum/neuroim2 documentation built on Feb. 26, 2025, 3:49 p.m.