Circurlar correlations between two circular variables
Circurlar correlations between two circular variables.
circ.cor1(theta, phi, pvalue = FALSE) circ.cors1(theta, phi, pvalue = FALSE)
theta |
The first cirular variable expressed in radians, not degrees. |
phi |
The other cirular variable. In the case of "circ.cors1" this is a matrix with many circular variables. In either case, the values must be in radians, not degrees. |
pvalue |
If you want the p-value of the zero correlation hypothesis testing set this to TRUE, otherwise leave it FALSE. |
Correlation for circular variables using the cosinus and sinus formula of Jammaladaka and SenGupta (1988).
If you set pvalue = TRUE, then for the "circ.cor1" a vector with two values, the correlation and its associated p-value, otherwise the correlation only. For the "circ.cors1", either a vector with the correlations only or a matrix with two columns, the correlation and the p-values.
Michail Tsagris
R implementation and documentation: Michail Tsagris <mtsagris@uoc.gr>
Jammalamadaka, R. S. and Sengupta, A. (2001). Topics in circular statistics. World Scientific.
Jammalamadaka, S. R. and Sarma, Y. R. (1988) . A correlation coefficient for angular variables. Statistical Theory and Data Analysis, 2:349–364.
y <- runif(50, 0, 2 * pi) x <- runif(50, 0, 2 * pi) circ.cor1(y, x, TRUE) x <- matrix(runif(50 * 10, 0, 2 * pi), ncol = 10) circ.cors1(y, x, TRUE)
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