Displaying 3 results from an estimated 3 matches for "efficeintly".
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effeciently
2017 Mar 20
1
Fwd: Possible memory problems with mallloc when called with .C()
Hello,
I'm trying to calculate a certain distance estimator for my thesis. I have a
program in C that works fine when I call it with .C() in R, but since
I'm dealing with big matrices like 30000x20000 it was getting a stack
overflow. Now I have the same program but more efficeintly coded using
malloc, and it works perfectlry in C, compiles well with R CMD SHLIB
but when I call it with .C() my pc basicly stops working independantly
of the size of the matrices involved.
The C code is the following (sorry it is a bit long):
#include <stdio.h>
#include <stdlib....
2010 Dec 10
0
R question: memory usage
Hi
I have a large R progress that that is constently running into memory
issues, I am trying to rewrite some of the code to make more efficeint
However, one thing I have found is that the memory usage shown by gc() is
very different from what i see from unix termilnal
Garbage collection 2047 = 1398+243+406 (level 2) ...
12.4 Mbytes of cons cells used (3%)
998.6 Mbytes of vectors used (23%)
2010 Dec 11
0
is there a packge or code to generate markov chains in R
Hi,
if i have data in the following time series format:
time, amount, state
1 2222 A
1 333 B
2 45 A
2 77 B
where states could be n and time periods t is there a package in R that would calculate the transition probabilities in a markov chain.
for each t except t=0 to generate
A B
A
B
perhaps the best structure might