Thanks Henrique and Marc for your reply, both worked.
However I need one more suggestion on from list to matrix
dat <- vector("list", 3)
dat[[1]] <- rnorm(5)
dat[[2]] <- rnorm(15)
dat[[3]] <- rnorm(3)
> dat
[[1]]
[1] 0.7615421 0.4151374 0.6534402 1.5999338 1.4131837
[[2]]
[1] 0.7364765 2.0786904 -1.1087768 1.5091391 -0.1448301 1.6015788
1.8039138 1.1194863 1.4907951 0.5324749
[11] 0.6792318 -0.8328359 -1.8009706 -0.8523432 0.5314461
[[3]]
[1] -0.4350899 -0.2610924 -0.6489858
Now I want to convert "dat" to a matrix. I tried following:
> Reduce("cbind", dat)
init
[1,] 0.7615421 0.7364765 -0.4350899
[2,] 0.4151374 2.0786904 -0.2610924
[3,] 0.6534402 -1.1087768 -0.6489858
[4,] 1.5999338 1.5091391 -0.4350899
[5,] 1.4131837 -0.1448301 -0.2610924
[6,] 0.7615421 1.6015788 -0.6489858
[7,] 0.4151374 1.8039138 -0.4350899
[8,] 0.6534402 1.1194863 -0.2610924
[9,] 1.5999338 1.4907951 -0.6489858
[10,] 1.4131837 0.5324749 -0.4350899
[11,] 0.7615421 0.6792318 -0.2610924
[12,] 0.4151374 -0.8328359 -0.6489858
[13,] 0.6534402 -1.8009706 -0.4350899
[14,] 1.5999338 -0.8523432 -0.2610924
[15,] 1.4131837 0.5314461 -0.6489858
Here you see values of vector with smaller length is getting repeated. Instead
of repetition, I would like to fill those with "NA" (or possibly some
predefined fixed value)
Would you please suggest me how to do that?
Thanks,
--- On Fri, 3/9/10, Henrique Dallazuanna <www...@gmail.com> wrote:
From: Henrique Dallazuanna <www...@gmail.com>
Subject: Re: [R] Matrix to list
To: "Ron Michael" <ron_michae...@yahoo.com>
Cc: r-h...@stat.math.ethz.ch
Date: Friday, 3 September, 2010, 8:07 PM
Try this:
unclass(as.data.frame(mat))
On Fri, Sep 3, 2010 at 9:48 AM, Ron Michael <ron_michae...@yahoo.com> wrote:
Dear all, suppose I have following matrix:
> mat <- matrix(rnorm(25), 5)
>
> mat
[,1] [,2] [,3] [,4] [,5]
[1,] 0.97056228 -1.3278509 -0.73511792 2.1650629 -0.4411997
[2,] 0.58613700 -0.2559899 -1.18334248 -1.4990907 1.8138846
[3,] -1.03333313 2.0227887 0.89622681 0.6483973 -1.5523283
[4,] 0.38968833 0.2490004 -0.02301061 -0.2705150 -0.9237268
[5,] 0.03306289 -0.4022751 -0.44404905 -1.6810542 -0.1016683
Now from "mat" I would like to create a "list" object where i-th column of
"mat" will represent i-th element of that list object.
I am looking for some way to avoid for loop. It will be really helpful if
somebody points me on that.
Thanks,
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--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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and provide commented, minimal, self-contained, reproducible code.
