Displaying 2 results from an estimated 2 matches for "marcus_jellinghaus".
2002 Oct 07
0
Why are big data.frames slow? What can I do to get it fas ter?
..."")
+ }
+ )
[1] 26.17 0.13 26.67 NA NA
>
> system.time(
+ for(i in 1:10) {
+ dat$c[i] <- paste(dat$a[i], "-", dat$b[i], sep="")
+ }
+ )
[1] 0.16 0.00 0.16 NA NA
HTH,
Andy
> -----Original Message-----
> From: Marcus Jellinghaus [mailto:Marcus_Jellinghaus at gmx.de]
> Sent: Monday, October 07, 2002 7:09 AM
> To: Uwe Ligges
> Cc: r-help at stat.math.ethz.ch
> Subject: Re: [R] Why are big data.frames slow? What can I do to get it
> faster?
>
>
> First I want to say "thank you" to everybody who replied.
> I unders...
2002 Oct 06
2
Why are big data.frames slow? What can I do to get it faster?
Hello,
I?m quite new to this list.
I have a high frequency-dataset with more than 500.000 records.
I want to edit a data.frame "Test". My small programm runs fine with a small
part of the dataset (just 100 records), but it is very slow with a huge
dataset. Of course it get?s slower with more records, but when I change just
the size of the frame and keep the number of edited records