atan3

The x coordinate from the (x, y) locations.

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

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

Functions that facilitate and speed up the analysis of data
produced by a Syntech servosphere <http://www.ockenfels-syntech.com/products/locomotion-compensation/>,
which is equipment for studying the movement behavior of arthropods.
This package is designed to make working with data produced from a
servosphere easy for someone new to or unfamiliar with R. The functions
provided in this package fall into three broad-use categories: functions for
cleaning raw data produced by the servosphere software, functions for
deriving movement variables based on position data, and functions for
summarizing movement variables for easier analysis. These functions are
built with functions from the tidyverse package to work efficiently, as a
single servosphere file may consist of hundreds of thousands of rows of data
and a user may wish to analyze hundreds of files at a time. Many of the
movement variables derivable through this package are described in the
following papers:
Ot<c3><a1>lora-Luna, Fernando; Dickens, Joseph C. (2011) <doi:10.1371/journal.pone.0020990>
Party, Virginie; Hanot, Christophe; Busser, Daniela Schmidt; Rochat, Didier; Renou, Michel (2013) <doi:10.1371/journal.pone.0052897>
Bell, William J.; Kramer, Ernest (1980) <doi:10.1007/BF01402908>
Becher, Paul G; Guerin, Patrick M. (2009) <doi:10.1016/j.jinsphys.2009.01.006>.

atan3: Calculate angle between a vector and y-axis

Description

Usage

Arguments

Details