Displaying 2 results from an estimated 2 matches for "p2p3".
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p2p
2012 Jun 29
5
assign object with loop (translation from SAS to R)
I have a dataset named DM with p1, p2, ...., p9 (9 columns, numerical values)
I would like to calculate to multify each pair of columns (p1p2, p1p3,...
p1p9, p2p3, p2p4.... p8p9) and assign them in p1p2, p1p3,... p1p9, p2p3,
p2p4.... p8p9
In SAS,
l=0;
p_int_sum=0;
do i=1 to 8;
do j=(i+1) to 9;
l=l+1;
p{i}p{j}=p{i}*p{j};
end;
end;
I would like to know how to assign them in R
I tried for function but failed.
for (i in 1:8) {
for (j in 2:9) {
DM$p[i]p[...
2006 Oct 16
1
Uneven CPU speed with CentOS 4.4 on a Mac Pro
Hi list,
I've recently managed to install CentOS 4.4 on an Apple Mac Pro.
Functionality-wise everything works great, but when trying to benchmark
the system, I don't get stable runtimes, they differ by more than 30%.
For example a benchmark run with our PDE solving code takes between 500
and 800 s on the completely unloaded machine.
Suspicious kernel output (complete output attached):