Is Object Numeric and Whole Numbers
Checks whether an object is numeric and if so, are all the elements whole numbers, to a given tolerance.
is.wholenumber(x, tolerance = .Machine$double.eps^0.5)
x |
The object to be tested. |
tolerance |
Numeric >=0. Absolute differences
greater than |
The object x is first tested to see if it is numeric. If not
the function returns 'FALSE'. Then if all the elements of
x are whole numbers to within the tolerance given by
tolerance the function returns 'TRUE'. If not it returns
'FALSE'.
Either 'TRUE' or 'FALSE' depending on the result of the
test.
David Scott d.scott@auckland.ac.nz.
Based on a post by Tony Plate <tplate@acm.org> on R-help.
is.wholenumber(-3:5) # TRUE
is.wholenumber(c(0,0.1,1.3,5)) # FALSE
is.wholenumber(-3:5 + .Machine$double.eps) # TRUE
is.wholenumber(-3:5 + .Machine$double.eps^0.5) # FALSE
is.wholenumber(c(2L,3L)) # TRUE
is.wholenumber(c("2L","3L")) # FALSE
is.wholenumber(0i ^ (-3:3)) # FALSE
is.wholenumber(matrix(1:6, nrow = 3)) # TRUE
is.wholenumber(list(-1:3,2:6)) # FALSE
is.numeric(list(-1:3,2:6)) # FALSE
is.wholenumber(unlist(list(-1:3,2:6))) # TRUEPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.