easybio (version 1.1.1)

finsert: Insert Specific Values into a Character Vector at Defined Positions

Description

This function constructs a character vector of a specified length, inserting given values at positions determined by numeric indices. It is designed for single cell annotation tasks, where specific annotations need to be placed at certain positions in a vector.

Usage

finsert(
  x = expression(c(0, 1, 3) == "Neutrophil", c(2, 4, 8) == "Macrophage"),
  len = integer(),
  setname = TRUE,
  na = "Unknown"
)

Value

A named character vector with the specified values inserted at given positions and padded with the na value if necessary.

Arguments

x

An expression defining the value to insert and the positions at which to insert them. The expression should be a list of logical comparisons, where the left side is a numeric vector of positions and the right side is the corresponding character value to insert.

len

The desired length of the output character vector. If the specified positions exceed this length, the vector will be padded with the na value.

setname

A logical value indicating whether to set names for the elements of the vector. If TRUE, names are set as character representations of the positions from 0 to the length of the vector minus one.

na

The default value to use for positions not specified in x. This value is also used to pad the vector if its length exceeds the positions specified in x.

Examples

# Example usage:
# Insert "Neutrophil" at positions 0, 1, 3 and "Macrophage" at positions 2, 4, 8
# in a vector of length 10, with "Unknown" as the default value.
library(easybio)
annotated_vector <- finsert(
  x = expression(
    c(0, 1, 3) == "Neutrophil",
    c(2, 4, 8) == "Macrophage"
  ),
  len = 10,
  na = "Unknown"
)
print(annotated_vector)