Re: [R] collapse a list of dataframes

How about this, t <- lapply(a,function(x){colnames(x)=c("A","B");return(x)}) do.call(rbind,t) On Mon, Feb 2, 2015 at 4:00 PM, Tom Wright wrote: > Hi all, > > I'm trying to avoid loops (no real reason, just as an exercise). > > Given a list: > > list(data.frame(a=1:3,b=letters[1:3]),data.frame(x

Re: [R] Best way to get the prices from these strings?

I am not sure if below ways are better. sub(".*>(.*)<.*","\\1",thePrices) sapply(thePrices, function(x){s=gregexpr(pattern ='\\$',x)[[1]][1];e=gregexpr(pattern ='<',x)[[1]][1];return(substr(x,s,e-1))}) On Wed, Jan 29, 2014 at 9:29 AM, Keith S Weintraub wrote: > Folks, > > I got the following

Re: [R] integrate

That works. Thanks a lot! On Wed, Nov 20, 2013 at 11:52 PM, David Winsemius wrote: > > On Nov 20, 2013, at 8:39 PM, David Winsemius wrote: > > > > > On Nov 20, 2013, at 7:12 PM, dan wang wrote: > > > >> Hi all, > >> > >> Can anyone help me

[R] about the integrate

Hi all, I tried below two methods to calculate the integrate of a same function. Two different results are given. The first one should be the right answer. Can any one help to explain why? Another issue is, the first one is not convenient as I have to update the mu and sigma outside the function.

[R] integrate

Hi all, Can anyone help me with below integrate function? Basically, I want to calculate the integral of the sum of two kernel density functions. But the error shows that: In x - a : longer object length is not a multiple of shorter object length y1 = rnorm(10) y2 = rnorm(10) fhat <- functio

Re: [R] modify functions in "stats", but .Call(C_BinDist, ...) couldn't load C function

Thanks, that works!! On Fri, Nov 15, 2013 at 11:16 AM, Prof Brian Ripley wrote: > On 15/11/2013 16:11, dan wang wrote: > >> Thanks, I think you are right.. >> How can I access this object? >> > > fortunes::fortune(14) applies. > > >> Thanks, >>

Re: [R] modify functions in "stats", but .Call(C_BinDist, ...) couldn't load C function

arradas > > Em 15-11-2013 14:34, dan wang escreveu: > >> Hi all, >> >> I am trying to write a new function based on an existing function in >> "stats". >> >> This function requires to call a c program "C_BinDist". The new function >>

[R] modify functions in "stats", but .Call(C_BinDist, ...) couldn't load C function

Hi all, I am trying to write a new function based on an existing function in "stats". This function requires to call a c program "C_BinDist". The new function couldn't work without load this c script. How can I find this "C_BinDist" function and load it to make my new function work through? Tha

Re: [R] integrate function

pmax instead of min or max. > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com > > > > -Original Message- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf > > Of dan wang > > Sent: Tuesday, February 12,