symmetric_distance {phiDelta}

X symmetric distance of a point

Description

calculates the Distance from the positive anchor and the negative anchor to the point and returns the smaller one. That means, if y is positive the distance to the positive anchor will be return, if it is negative, the negative anchor distance will be calculated

Usage

symmetric_distance(x, y, anchor)

Arguments

x, y

numerical, in this case phi and delta but in general the input coordinates

anchor

vector (x,y) the anchor for the calculation of the distance

Value

the smaller distance of (x,y) to eather the positive or negative anchor

Examples

symmetric_distance(0.5,0.5,c(0,0))