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nomex
2006 Jun 15
0
log returns (was: Re: help with table partition)
Please use a descriptive subject and not tag onto a prior thread
for new topics.
Assuming the first row is time 1 and the second row is time 2 and
so on try:
diff(log(P))
On 6/15/06, Wong, Kim <kwong at nymex.com> wrote:
>
> Hi, thank you all for the help.
>
> The split function works very well.
>
> I have an additional question. If I have a matrix of prices (row = 30,
> col = 2) in matrix P
>
> P:
>
> 30 40
> 31.5 42
> ....
> ....
> ....
>
> 32 43...
2006 Jun 15
4
help with table partition
Hi,
I have a test_table where the dim is 62220 by 73 (row by col)
I would like to partition the rows into 170 equal parts (170 tables
where each is of dim 366 by 73), and rearrange them horizontally. The
source codes I have:
for (i in 1:170) {
c = cbind(c,test_table[(367*i+1):(367*(i+1)),2:73]);
}
Unfortunately, using for loop and cbind for a table of this size