[R] calling the function which is stored in a list
Hi
I'm storing two functions in a list
# creating two function
function1 - function(n) {
return(sum(n))
}
function2 - function(n) {
return(mean(n))
}
#storing the function
function3 =c(function1,function2)
is it possible to call the stored function and used it ?
x=c(10,29)
funtion3[1](x)
Thanks
-
Thanks in Advance
Arun
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Re: [R] calling the function which is stored in a list
On 09.02.2012 08:54, arunkumar wrote:
Hi
I'm storing two functions in a list
# creating two function
function1- function(n) {
return(sum(n))
}
function2- function(n) {
return(mean(n))
}
#storing the function
function3 =c(function1,function2)
is it possible to call the stored function and used it ?
x=c(10,29)
funtion3[1](x)
Yes, if you correct the typo and use list indexing with double brackets:
function3[[1]](x)
Uwe Ligges
Thanks
-
Thanks in Advance
Arun
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Re: [R] calling the function which is stored in a list
Thanks it works - Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/calling-the-function-which-is-stored-in-a-list-tp4372131p4372557.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] calling the function which is stored in a list
On Thu, Feb 9, 2012 at 2:54 AM, arunkumar akpbond...@gmail.com wrote:
Hi
I'm storing two functions in a list
# creating two function
function1 - function(n) {
return(sum(n))
}
function2 - function(n) {
return(mean(n))
}
#storing the function
function3 =c(function1,function2)
is it possible to call the stored function and used it ?
x=c(10,29)
funtion3[1](x)
In addition to [[ as in the other response also try this:
L - list(function1 = sum, function2 = mean)
L$function1(1:3)
Note that the proto package is somewhat similar but stores functions
in environments rather than lists and also supports a type of object
oriented programming:
library(proto)
p - proto(function1 = function(., n) sum(n),
function2 = function(., n) mean(n),
function3 = function(.) mean(.$x),
x = 1:10
)
p$function1(1:3)
p$function3() # mean of 1:10
p$x - 1:5
p$function3() # mean of 1:5
# define child p2 with its own x overriding p's x
p2 - p$proto(x = 10:15)
# p2 has its own x so this is mean of 10:15
# p2 inherits its methods from p so its has a
# function3 too
p2$function3()
p$function3() # p unchanged. Still mean of 1:5.
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