Function: sphericalROI()

function sphericalROI(
   vol, 
   centroid, 
   radius, 
   fill?, 
   nonzero?): ROIVolWindow;

Defined in: src/roi/ROI_factories.ts:23

Creates a spherical ROI centered at the given coordinates.

The radius is interpreted in physical units (mm). Per-axis voxel spacing (from vol.space.spacing) is applied to each displacement, so on anisotropic data the neighborhood is a physical sphere (i.e. fewer voxels are included along coarsely-sampled axes). On isotropic 1mm data this reduces to the classic integer voxel sphere.

Parameters

vol

NeuroVol

The NeuroVol representing the volume

centroid

number[]

The center voxel coordinates [i, j, k]

radius

number

The radius of the sphere in millimeters (physical units)

fill?

number = 1

Optional value(s) to assign to the data slot. Defaults to 1

nonzero?

boolean = false

If true, only include voxels with non-zero values from the source volume

Returns

ROIVolWindow

An ROIVolWindow representing the spherical ROI