[R] rpois formula
David Winsemius
dwinsemius at comcast.net
Wed Oct 7 04:33:13 CEST 2009
Or:
a = rpois (100000, 0.1)
b = rpois (100000, 0.15)
table(a>b, a==b, b>a)
And if you look at that output a bit:
table(a<b,a==b )[c(1,3,2)] # for a>b, b>a and a=b .
# 79049 12712 8239 .. since FALSE < TRUE
--
On Oct 6, 2009, at 9:49 PM, Ian Fiske wrote:
>
> try
> sum(a > b)
> sum(b > a)
> sum(a == b)
>
> Ian
>
>
> nedmt60 wrote:
>>
>> i have
>>
>> a = rpois (100000, x)
>> b = rpois (100000, y)
>>
>> what is the code to show that a>b, b>a and a=b to show just the
>> number of
>> occurances?
occurrences?
>> at the moment when I type a>b I get a nice long list of true or
>> false.
As you _should_ when you supply two vectors to a binary operator.
>>
>
> --
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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