calculate.terminal.velocity.phys: A function to calculate terminal velocity

In jinleizhu/velocimeter: A function to calculate terminal velocity

Description

The function allows one to calculate terminal velocity using a physical model for free fall with air resistance for a large sphere.

Usage

calculate.terminal.velocity.phys(
  file,
  min.size,
  min.circularity,
  fps = 130,
  tubelength
)

Arguments

file	A .txt file containing pixel coordinates extracted from videos by imageJ
min.size	Minimum size (in pixels) of valid objects
min.circularity	Minimum circularity of valid objects
fps	Frame per second, defaults to 130 in our method
tubelength	2.095 m,1.575 m, and 1.075 m for long, medium, and short tube, respectively

Value

A list of estimated Vt using the linear and mechanistic models, data used to fit the models, intercept, R-squared values

Examples

library(velocimeter)
# not run
# calculate.terminal.velocity.phys(file =
# paste0(.libPaths()[which("velocimeter"%in%list.files(.libPaths()))],
# "/velocimeter/extdata/agri-short_00000.aviResults.txt"),
# min.size = 10,min.circularity = 0.05,fps = 130,tubelength = 1.075)

jinleizhu/velocimeter documentation built on Jan. 8, 2022, 1:19 a.m.