is.number {lazy.tools} | R Documentation |
Check if a vector contains numbers only.
is.number(arg, pat = 1)
arg |
a vector or a list |
pat |
= 1 to match non-negative integers |
If arg is a vector or matrix, a scalar TRUE or FALSE.
If arg is a list, a vector of the same length as the arg consisting of
TRUEs or FALSEs.
vec=c("a","1","1.4","b.","-b","-2","2-","122 "," 55","0.4",".4","-0.","-0.8") is.number(vec) vec2=c("1","0","90") is.number( list( vec, vec2, 1:6) )