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A question about function behavior

2 messages · Liaw, Andy, Martin Maechler

Liaw, Andy
# 
It works as documented.  ?max says:

Value

max and min return the maximum or minimum of all the values present in their
arguments, as integer if all are integer, or as double otherwise. 


What you want is pmax().  [This should perhaps be included in the "See Also"
section of ?max.]

Andy
Martin Maechler
# 
>> From: Jorge Ahumada
    >> 
    >> Hello,
    >> 
    >> I have been trying to figure this one out, but don't seem
    >> to go anywhere. I have a function like this:
    >> 
    >> a = function(t) {
    >> 
    >> max(0,t+1)
    >> 
    >> }
    >> 
    >> very simple, but if I pass a vector of n values to this
    >> function I expect n evaluations of max and instead I get
    >> only one value (the largest value of them all..). Is
    >> there anyway to do this without invoking a for loop?

    AndyL> It works as documented.  ?max says:

    AndyL>   Value

    AndyL>   max and min return the maximum or minimum of all the
    AndyL>   values present in their arguments, as integer if all
    AndyL>    are integer, or as double otherwise.


    AndyL> What you want is pmax().  

indeed.

    AndyL> [This should perhaps be included in the "See Also" section of ?max.]

good suggestion, Andy, 
if only ......

They already  *share*  the same help page --- just so you would
find pmax() / pmin() as soon as you looked for min() or max().

If only people would *look at* the help pages or -- dare I say --
even *read* them ...

Martin