symmetry | R Documentation |
The function returns the highest factor of amplitude either in negative or positive values. This quantifies the symmetry of components.
symmetry(xy, names = "num")
xy |
signal (vector or matrix) |
names |
the names to use for the resulting vector. If NULL no names are provided, if NA its the names of the columns of the xy matrix, if "num" it the column index of the matrix xy |
set.seed(42) n <- 600 t <- seq_len(n) p1 <- 30 p2 <- 240 xy <- (1 + 0.6 * sin(t*2*pi/p2)) * sin(t*2*pi/p1) + 2 * sin(t*2*pi/p2) + rnorm(n, sd = 0.5) + t * 0.01 inter_dt <- round(runif(length(xy), min = 0.5, max = 1.5),1) dt <- cumsum(inter_dt) dec <- extricate(xy, dt, nimf = 7, sifting = 10, repl = 1, comb = 40, factor_noise = 10, speak = TRUE, output_sifting = TRUE) symmetry(dec$m) plot_emd(dec, select = c(6,8,9), pdf = FALSE, adapt.axis = TRUE)
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