Below is the script that was based on your help - it works very fast:
### Creating the example data set:
set.seed(123)
MyData-data.frame(group=c(rep(first,10),rep(second,10)),a=abs(round(rnorm(20,mean=0,
sd=.55),2)), b=abs(round(rnorm(20,mean=0, sd=.55),2)))
MyData
### Specifying parameters used
Would like to thank every one once more for your great help.
I was able to reduce the time from god knows how many hours to about 2 minutes!
Really appreciate it!
Dimitri
On Sat, Mar 27, 2010 at 11:43 AM, Martin Morgan mtmor...@fhcrc.org wrote:
On 03/26/2010 06:40 PM, Dimitri Liakhovitski wrote:
On 03/26/2010 06:40 PM, Dimitri Liakhovitski wrote:
My sincere apologies if it looked large. Let me try again with less code.
It's hard to do less than that. In fact - there is nothing in this
code but 1 formula and many loops, which is the problem I am not sure
how to solve.
I also tried to
exp1^(a[case] * l * 10)
would be better written out of the loop as
b - exp1^(a * l * 10)
And even better as
b - exp(a * l * 10)
Hadley
--
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/
hadley wickham wrote:
exp1^(a[case] * l * 10)
would be better written out of the loop as
b - exp1^(a * l * 10)
And even better as
b - exp(a * l * 10)
Hadley
Aye, exp() functions tend to be heavily optimized compared to general
functions such as `^` even if e is used as the
Dmitri:
If you follow the R posting guide you're more likely to get useful replies.
In particular it asks for **small** reproducible examples -- your example is
far more code then I care to spend time on anyway (others may be more
willing or more able to do so of course). I suggest you try (if
My sincere apologies if it looked large. Let me try again with less code.
It's hard to do less than that. In fact - there is nothing in this
code but 1 formula and many loops, which is the problem I am not sure
how to solve.
I also tried to be as clear as possible with the comments.
Dimitri
##
Hi Dimitri
Your code is complex, so this won't be easy for anyone to deparse.
I think part of the issue is in the calculation you are doing in your innermost
loop
data[data[[group.var]] %in% subgroup, name][case]=
1-((1-data[data[[group.var]] %in% subgroup,
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