makePolarSectors: Slice the polar space in sectors

In GastonMauroDiaz/caiman: Canopy Image Analysis

Description

Make sectors by slicing the azimuth angle from 0 to 360 in equals intervals.

Usage

makePolarSectors(x, angleWidth, angleMean = FALSE)

## S4 method for signature 'AzimuthImage'
makePolarSectors(x, angleWidth, angleMean = FALSE)

Arguments

x	AzimuthImage.
angleWidth	Angle. It must divides 0:360 into a whole number of segments.
angleMean	logical. If FALSE, all the pixels that belong to a sector are labeled with an ID number. Otherwise, the angle mean of the sector are assigned to the pixels.

Details

The intervals are closed on the right and open on the left. The first sector never contains 0 because the zenith point is always in between two pixels (see makeZimage).

Value

PolarSegmentation.

See Also

makeAimage, makeRings, makePolarGrid.

Examples

z <- makeZimage(480, lensPolyCoef())
a <- makeAimage(z)

s <- makePolarSectors(a, angleWidth = asAngle(10))
s
plot(s)
s <- makePolarSectors(a, angleWidth = asAngle(10), angleMean = TRUE)
s
plot(s)

s <- makePolarSectors(a, angleWidth = asAngle(15))
s
plot(s)

GastonMauroDiaz/caiman documentation built on Jan. 22, 2022, 4:43 a.m.