Re: [R] extracting columns from a list

From: N. Lapidus <n.lapidus_at_gmail.com>
Date: Fri, 23 May 2008 15:54:16 +0200

Hi Mohamed

Try:
lapply (NameOfYourList, function (dat, NumCol) dat[,NumCol], c(12,13))

But there must be a shorter way to write this.

Nael

On Fri, May 23, 2008 at 3:37 PM, mohamed nur anisah < nuranisah_mohamed_at_yahoo.com> wrote:

> Dear all,
>
> i have 2 lists of data with each of the list contain 14 columns. How am i
> going to extract column 12 and 13 from each of the list ?? and can i combine
> my extracted columns to form a single list. Attach with are my data. Your
> coorperation is highly appreciated. Many thanks
>
> Regards,
> Anisah
>
>
> [[1]]
> CS(O) id no.anchor ref loc.start loc.end CS(O).size CS(O)ref.density
> tested loc.start loc.end breakp.start breakp.end den of anchor
> 1 CS 2.0 3 mmu19 6465196 6978022 512826
> 6 cfa18 55567952 55782336 6978022 6992734 28
> 2 CS 3.0 57 mmu19 6992734 10249966 3257232
> 17 cfa18 55792632 57688808 10249966 10277430 25
> 3 CS 4.0 21 mmu19 10277430 10955201 677771
> 31 cfa18 57721864 58419812 10955201 11008526 36
> 4 CS 5.0 2 mmu19 11008526 11045352 36826
> 54 cfa18 58462088 58518608 11045352 11316865 32
> 5 CS 6.0 7 mmu19 11316865 11814604 497739
> 14 cfa21 53902028 53514536 11814604 11937228 37
> 6 CS 7.0 14 mmu19 11937228 13847633 1910405
> 7 cfa18 40111560 41204940 13847633 14515091 17
> 7 CS 8.0 3 mmu19 14515091 16022770 1507679
> 2 cfa1 82195232 83511824 16022770 16199850 5
> 8 CS 9.0 25 mmu19 16199850 23625856 7426006
> 3 cfa1 83903856 90638880 23625856 23754554 14
> 9 CS 10.0 33 mmu19 23754554 29676192 5921638
> 6 cfa1 90773872 96913624 29676192 29763918 16
> 10 CS 11.0 6 mmu19 29763918 30164446 400528
> 15 cfa11 29919668 30510776 30164446 30611872 8
> 11 CS 12.0 19 mmu19 30611872 34558312 3946440
> 5 cfa26 38767664 41958808 34558312 34734404 15
> 12 CSO 13.1 73 mmu19 34734404 44009616 9275212
> 8 cfa28 7343952 15872122 44009616 44088256 21
> 13 CSO 13.2 71 mmu19 44088256 53582632 9494376
> 7 cfa28 15923283 24830712 53582632 53654796 14
>
> [[2]]
> CS(O) id no.anchor ref loc.start loc.end CS(O).size CS(O)ref.density
> tested loc.start loc.end breakp.start breakp.end den of anchor
> 1 CSO 2.1 4 mmuX 7311438 7428353 116915
> 34 cfaX 41732964 41660008 7428353 8356932 16
> 2 CSO 2.2 41 mmuX 8356932 20225456 11868524
> 3 cfaX 32299338 41540632 20225456 20641584 13
> 3 CSO 2.3 8 mmuX 20641584 33046200 12404616
> 1 cfaX 91770240 94412912 33046200 33175188 15
> 4 CSO 3.1 73 mmuX 33175188 57970280 24795092
> 3 cfaX 94538728 114133200 57970280 64939220 3
> 5 CSO 3.2 29 mmuX 64939220 70011280 5072060
> 6 cfaX 119319152 124625688 70011280 70039784 32
> 6 CS 4.0 21 mmuX 70039784 70677328 637544
> 33 cfaX 124652504 125280776 70677328 71241272 29
> 7 CSO 5.1 2 mmuX 71241272 71362456 121184
> 17 cfaX 125764816 125872960 71362456 71425576 14
> 8 CSO 6.1 4 mmuX 71425576 71824776 399200
> 10 cfaX 125917392 126261784 71824776 73894168 6
> 9 CSO 6.2 2 mmuX 73894168 74014744 120576
> 17 cfaX 6363930 1898656 74014744 74705408 11
> 10 CSO 6.3 17 mmuX 74705408 90487648 15782240
> 1 cfaX 32034930 19573208 90487648 91228160 10
> 11 CSO 6.4 49 mmuX 91228160 101058192 9830032
> 5 cfaX 51733740 61930260 101058192 101967264 9
> 12 CS 7.0 3 mmuX 101967264 102176888 209624
> 14 cfaX 62797768 63194052 102176888 102230040 11
> 13 CSO 8.1 2 mmuX 102230040 102409592 179552
> 11 cfaX 63307688 63460248 102409592 103123352 9
> 14 CSO 8.2 16 mmuX 103123352 110591464 7468112
> 2 cfaX 63896752 71000280 110591464 116044144 2
> 15 CS 9.0 2 mmuX 116044144 116407200 363056
> 6 cfaX 71543016 71752808 116407200 118512328 1
> 16 CS 10.0 24 mmuX 118512328 131185424 12673096
> 2 cfaX 72291072 79468544 131185424 131616688 20
> 17 CS 11.0 8 mmuX 131616688 132395992 779304
> 10 cfaX 79821128 80586408 132395992 132461760 17
> 18 CS 12.0 21 mmuX 132461760 137564368 5102608
> 4 cfaX 80674704 85936464 137564368 137927776 12
> 19 CSO 13.1 14 mmuX 137927776 142716752 4788976
> 3 cfaX 86288848 90933784 142716752 145888160 5
> 20 CSO 13.2 16 mmuX 145888160 147685360 1797200
> 9 cfaX 46726104 44854128 148377392 148480704 12
> 21 CS 14.0 3 mmuX 148480704 148838944 358240
> 8 cfaX 47357568 47895460 148838944 150553856 7
> 22 CS 15.0 12 mmuX 150553856 154876816 4322960
> 3 cfaX 19415076 15808253 154876816 154971520 8
>
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