atan3: Calculate angle between a vector and y-axis

In wittja01/ballr: Analyze Data Generated from Syntech Servosphere Trials

Description

Calculate the angle between a vector and y-axis, not the x-axis as in atan2

Usage

atan3(x, y)

Arguments

x	The x coordinate from the (x, y) locations.
y	The y coordinate from the (x, y) location for an organism.

Details

This is a helper function. It is called in another function but is otherwise not "outward facing".

This function calculates the angle between a vector and the y-axis. The base function atan2 calculates the angle between a vector and the x-axis, which is not desirable in this case.

If the data will be aggregated, it is recommended to aggregate the data before running this function.

wittja01/ballr documentation built on Sept. 13, 2020, 10:02 p.m.