Hello R-universe...
I am having trouble writing a function which contains a loop so I can sapply()
it to a list of data frames
Each data frame has 241 observations of 15 variables. My loop takes a random
sample of one row until the 40 consecutive rows after the sample have a
d2p(variable) sum
I am not sure what purpose the while loop has. However, the main problem
seems to be that you need to put:
i-sample(1:(n-40),1) #This sample from 1 to n-40
rather than
i-sample(1:n-40,1) #this samples one 1:n and then subtracts 40
Otherwise, you may get negative index values
Best,
Daniel
Hi:
samp_func() doesn't return anything. Either (1) type test as the last
line of the function body or (2) don't assign the last sum to an
object.
HTH,
Dennis
On Thu, Aug 11, 2011 at 1:59 PM, Sean Bignami bignam...@gmail.com wrote:
Hello R-universe...
I am having trouble writing a function
The previous two posters basically covered everything, but since I'm on the
train with not too much to do, here's a more detailed response building on
what they said. The following code is shovel-ready and can be pasted
directly to your command line if you have your main data frame called d
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