Matrix (version 0.999375-33)

abIndex-class: Class "abIndex" of Abstract Index Vectors

Description

The "abIndex" class, short for Abstract Index Vector, is used for dealing with large index vectors more efficiently, than using integer (or numeric) vectors of the kind 2:1000000 or c(0:1e5, 1000:1e6).

Objects from the Class

Objects can be created by calls of the form new("abIndex", ...), or more easily by as(x, "abIndex") where x is an integer (valued) vector.

See Also

rle (base) which is used here. numeric

Examples

showClass("abIndex")
ii <- c(-3:40, 20:70)
str(ai <- as(ii, "abIndex"))# note