Assume we have a list (mylist) that is use as input object for a lapply function. Is there a way to know which element in mylist is being evaluated? The method should work on lapply and snowfall::sfAp
I would appreciate insight into why this happens and how I might do this more eloquently. When I use sapply, I would like it to return a 3x2 matrix, but it returns a 2x3 matrix. Why is this? And why
I ran tests in Firefox 3.6.11, if that matters, an开发者_如何学Pythond eval misbehaves in the context of call and apply. It somehow jumps over the current \'this\' object. Why?
I am trying to use cat() as functions inside apply(). I can almost make R do what I want, but I\'m getting some very confusing (to me) NULLS at the end of the return. Here is a silly example, to highl
I\'ve got a function wich can accept a varible number of parameter with a rest operator. I want create an object passing the argument collected with the rest operator directly to a constructor withou
I have two apply functions excecuting the average and standard deviation across the first two dimensions on a large three dimentional array (437216,8,3). It takes 16 minutes to complete on Rx32. It\'s
I noticed already a couple of times that working with dates doesn\'t allow for using the usual tricks in R. Say I have a dataframe Data with Dates (see below), and I want to convert the complete dataf
I\'m using R, and I have two data.frames, A and B. They both have 6 rows, but A has 25000 columns (genes), and B has 30 columns. I\'d like to apply a function with two arguments f(x,y) where x is ever
Whenever I want to do something \"map\"py in R, I usually try to use a function in the apply family.
I am interested in finding the numbers that exhibit the property of having the sum of their proper divisors equal to the number. The first example is 6, where the proper divisors are 1 + 2 + 3 = 6.
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