I forgot to answer to the last part of your question. I think what you call a list is actually an element of a list, right? If so, the command you want depends on the way you want to combine these elements.
For example, the following lines will extract columns 12 and 13 of any array-like element of your list and bind them into columns of a same array (if all your elements have the same number of rows). List2 <- lapply (NameOfYourList, function (dat, NumCol) dat[,NumCol], c(12,13)) Array2 <- do.call (cbind, List2) If you meant something else by 'combine", please be more explicit. Nael On Fri, May 23, 2008 at 3:54 PM, N. Lapidus <[EMAIL PROTECTED]> wrote: > 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 < > [EMAIL PROTECTED]> 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 >> >> ______________________________________________ >> 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. >> >> > [[alternative HTML version deleted]] ______________________________________________ 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.
