Macaulay2 » Documentation
Packages » RInterface » RObject » log1p(RObject)

next | previous | forward | backward | up | index | toc

log1p(RObject) -- natural logarithm of 1 plus an R object

Function: log1p
Usage:

log1p x
Inputs:
- x, a R object,
Outputs:
- a R object, the element-wise value of log(1 + x);

Description

Compute log(1 + x) for each element of an R numeric vector, calling R's log1p. This is more accurate than log(1 + x) for small values of x.

i1 : log1p RObject 0.001

o1 = [1] 0.0009995003

o1 : RObject of type double

See also

log(RObject) -- natural logarithm of an R object
expm1(RObject) -- exponential minus 1 of an R object

Ways to use this method:

log1p(RObject) -- natural logarithm of 1 plus an R object

The source of this document is in RInterface/doc/exp-log.m2:140:0.