Allocation of memory to a data frame
On 20.04.2011 09:46, santosh wrote:
Hello gRoup, A while back I was advised that overallocating an object and filling it up is better than rbind. I am trying to optimize some code. I have the following object (empty which I know in advance). Is there an easy to create an empty data frame with 100,000 empty rows based on the structure below?
dput(d)
structure(list(A = character(0), B = character(0), C = numeric(0),
D = character(0), E = character(0), F = character(0), G =
character(0),
H = structure(numeric(0), class = "Date"), I = numeric(0),
J = integer(0)), .Names = c("A", "B", "C", "D", "E", "F",
"G", "H", "I", "J"), row.names = integer(0), class = "data.frame")
Replace the zeros by your number of rows? Uwe Ligges
I can use dataFrame in R.utils and do it explicitly but wondering if there an easier way since I have the structure with me. Thank you.
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