get.extreme.pt: Coordinates of the extreme points

In espadon: Easy Study of Patient DICOM Data in Oncology

Coordinates of the extreme points

Description

The get.extreme.pt function returns the x, y, z coordinates of the 2 extreme voxels of the rectangular parallelepiped, containing the objet obj of class volume, struct or mesh. These coordinates are given in the ref.pseudo frame of reference.

Usage

get.extreme.pt(obj, ref.pseudo = obj$ref.pseudo, T.MAT = NULL, ...)

Arguments

obj	object of class volume or struct or mesh.
ref.pseudo	Pseudonym of the frame of reference in which you want the coordinates.
T.MAT	"t.mat" class object, created by load.patient.from.Rdcm or load.T.MAT. If T.MAT = NULL, ref.pseudo must be equal to obj$ref.pseudo.
...	Additional arguments min, max (of voxel) if obj is of class 'volume'. Arguments roi.name, roi.sname, roi.idx if obj is of class 'struct'. Arguments vol (depracated), replaced by obj.

Value

Returns a dataframe of min and max columns, and x, y and z rows.

• If obj is a member of the class volume: the returned dataframe represents the coordinates of the 2 extreme points of the rectangle parallelepiped including all the voxels such as min <= obj$vol3D.data <= max, if the arguments min or max exist, or including all the voxels otherwise.

• If obj is a member of the class struct: the returned dataframe represents the coordinates of the 2 extreme points of the rectangular parallelepiped including all the selected RoI.

• if obj is a member of the class mesh: the returned dataframe represents the coordinates of the 2 extreme points of the rectangular parallelepiped including all the mesh.

Examples

# loading of toy-patient objects
patient <- toy.load.patient (modality = "ct", roi.name = "", dxyz = c (5, 5, 5))
CT <- patient$ct[[1]]

# xyz extreme coordinate
get.extreme.pt (CT)
get.extreme.pt (CT, min = 0)

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