movCount: Moving Count

In RcppMovStat: Fast Moving Statistics Calculation

Description

This function returns a moving count of the given vector.

Usage

movCount(vec, n = 1L, ss = 1L, na_rm = FALSE, sizeD = FALSE,
  align = "left")

movCountr(vec, n = 1L, ss = 1L, na_rm = FALSE, sizeD = FALSE)

Arguments

vec	A numeric vector.
n	An integer: moving window size, with 1 as default
ss	An integer: step size, only calculating at points with an equal distance ss. Namely, there are ss-1 number between each two 'consecutive' points
na_rm	logical. Should missing values (including NaN) be removed?
sizeD	logical. Only applied when ss > 1, it decides whether to get a result of smaller size. If sizeD = T, align does not affect the output.
align	A string denotes how to align the moving average, three options: "left", "middle", "right"

Details

This function counts the number of non-missing values for each moving window. It is especially designed for vec vector with missing values. Otherwise, it will return a trivial vector with all elements n.

Value

This function returns a vector whose length is the same as that of vec or is ceiling((L - n + 1)/ss), (when sizeD = T), where L is the length of vec.

Functions

• movCountr: An function equivalent to movCount(..., align = "right")

Examples

movCount(c(1, 4, 3, NA, 8), 2, na_rm = TRUE)
movCount(c(1, 4, 3, NA, 8), 2, na_rm = TRUE, align = 'right')
movCountr(c(1, 4, 3, NA, 8), 2, na_rm = TRUE)
movCount(c(1, 4, 3, NA, NA), 2, na_rm = TRUE)

RcppMovStat documentation built on Jan. 30, 2018, 5:04 p.m.