vol.gradient: Gradient of a volume
In espadon: Easy Study of Patient DICOM Data in Oncology

vol.gradient

R Documentation

Gradient of a volume

Description

The vol.gradient function calculates the 3D gradient of a "volume" class object

Usage

vol.gradient(vol, alias = "", description = NULL)

Arguments

`vol`	"volume" class object.
`alias`	Character string, `$alias` of the created object.
`description`	Character string, describing the created object. If `description = NULL` (default value), it will be set to `paste (vol$object.alias, "gradient")`.

Value

Returns a "volume" class object (see espadon.class for class definitions), with the same grid and modality as vol, gradient of vol.

Examples

# loading of toy-patient objects (decrease dxyz and increase beam.nb for 
# better result)
step <- 3
pat <- toy.load.patient (modality = c ("ct"), dxyz = rep (step, 3))
CT.gradient <- vol.gradient (pat$ct[[1]])

display.plane (CT.gradient, view.type = "sagi", view.coord = 61, 
               interpolate = FALSE)

espadon documentation built on April 11, 2025, 5:57 p.m.