similar to: using do.call to call a list of functions

Displaying 8 results from an estimated 8 matches similar to: "using do.call to call a list of functions"

2011 Oct 05
4
dynamically creating functions in r
it is possible to dynamically create functions in R using lists? what I want to do is something like this: a = list() for (i in 1:10) a[[i]] = function(seed = i) runif(seed) so that when I call a[i] I get random draws 1,2,....i unfortunately R only uses the last i . I would also like to know if there is a run-all function without explicitly looping or using lapply. for example if I
2011 May 12
1
extract integers from string
I have a vector with a long list of sentences that contain integers. I would like to extract the integers in a manner such that they are separate and manipulatable. for example: x[i] <- "sally has 20 dollars in her pocket and 3 marbles" x[i+1] <- "30 days ago john had a 400k house" all sentences are different and contain a mixture of both integers and characters. i
2007 Sep 03
4
sin(pi)?
Dear all, I found something strange when calculating sin of pi value sin(pi) [1] 1.224606e-16 pi [1] 3.141593 sin(3.141593) [1] -3.464102e-07 Any help and comment should be appreciated. Regards Nguyen ____________________________ Nguyen Dinh Nguyen Garvan Institute of Medical Research Sydney, Australia
2006 Oct 07
3
ifelse(logical, function1, function2) does not work
Why this kind of assignment does not work? n <- 1 f <- ifelse(n == 1, sin, cos) f(pi) this must be rewritten as: n <- 1 f <- cos if (n == 1) f <- sin f(pi) [oops. 1.224606e-16 instead of zero. Damn floating point errors :-/] Alberto Monteiro
2007 Oct 18
3
Writing a R-Script
Ist there a possibility to write a R-Script using something like #!/usr/bin/R and then alle the requestet commands? Of course "R CMD BATCH" exists, but there was (for me) no possibility to write something like a HERE-script. regards erkan -- ?ber den grenzen mu? die freiheit wohl wolkenlos sein
2005 Jun 07
9
how to define functions in such a situation
hi R folks, I need read a file from hardisk or www web. Then I need to define some new functions according to the contents of the read file. For example, i need write a package name "mypackage" like this: >library(mypackage) >read(some_file_on_web) #to see its content, suppose it contains: eat.drink.sleep then 3 new functions need to be created and usable. the problem is, how
2011 May 06
1
Generalized Hyperbolic distribution
How to use the package generalized hyperbolic distribution in order to estimate the four parameters in the NIG-distribution? I have a data material with stock returns that I want to fit the parameters to. -- View this message in context: http://r.789695.n4.nabble.com/Generalized-Hyperbolic-distribution-tp3504369p3504369.html Sent from the R help mailing list archive at Nabble.com.
2011 May 31
1
while loop problems
Hi , i am trying to get this loop in my r program to work but it is not giving me the results that I desire. I am trying to model an insurance contract where there are n securities that have a fixed likelihood of default vector(data[i,2]) and a payout vector(data[i,1]). i need to price the value of stop losses at the security level and at the portfolio level. to do this i created two while loops