You are in Circle 2 of 'The R Inferno'.
You are wise to want to leave.
http://www.burns-stat.com/pages/Tutor/R_inferno.pdf
Pat
On 15/12/2012 15:10, Yong Wang wrote:
Dear list;
How can I speed up the run of following code (illustrative)
#========================================================================
con<-vector("numeric")
for (i in 1:limit)
{
if(matched data for the ith item found) {
if(i==1) {con<-RowOfMatchedData } else
{con<-rbind(con,matchedData)}
}
}
#========================================================================
each RowOfMatchedData contains 105 variables, when "i" runs over 10^7
and the data container "con" get large enough, the codes get extremely
slow, I know this is a working memory problem (2GB only), is there
anyway to circumvent this problem without dicing and slicing the data.
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--
Patrick Burns
pbu...@pburns.seanet.com
twitter: @portfolioprobe
http://www.portfolioprobe.com/blog
http://www.burns-stat.com
(home of 'Some hints for the R beginner'
and 'The R Inferno')
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
