[R] values of list of variable names

[jim holtman]

You probably want to use 'get':

> r1 <- 5
> r2 <- 3
> r3 <- 45
> x <- ls(pattern = '^r.$')
> x
[1] "r1" "r2" "r3"
> lapply(x, get)
[[1]]
[1] 5

[[2]]
[1] 3

[[3]]
[1] 45

>


Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.

On Fri, Jun 1, 2018 at 7:25 AM, Christian <christian using echoffmann.ch> wrote:

> Hi,
>
> I have searched the documentations of eval, substitute, expression, and I
> cannot make work something like the values of a list of variable names:
>
> lis <- ls(pattern="pr") # all variables with names containing 'pr'
>
> What is the mantra giving me the _values_ of the variables whose names
> are  contained in 'lis'. eval(parse(ls(pattern="pr"))) will not do but
> returning TRUE.
>
> TIA
> C.
> --
> Christian Hoffmann
> Rigiblickstrasse 15b
> CH-8915 Hausen am Albis
> Switzerland
> Telefon +41-(0)44-7640853
>
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