sed - R read only specific row of textfile and store them in data.frame -


i have following problem. there textfile want import r. looks this:

#  below, lines start minus sign , l (-l) #  define loci, while start minus sign , (-i) #  define epistatic interactions between loci defined. #  loci must defined before interactions can defined. #  experimental designs, interactions ignored. #    -start model # # here data on qtls... # -t     3   number of traits # # -k     1 # trait -number     1 # #      #  ..chrom..markr.    .recombil.    .recombir.    .additive.    .dominance -l     1      2     19         0.0823        0.0028        1.1712        0.0000 # #   qtl1   qtl2   type       value   # # # -k     1 # trait -number     2 # #      #  ..chrom..markr.    .recombil.    .recombir.    .additive.    .dominance -l     1      2     14         0.0309        0.0564        0.4635        0.0000 # #   qtl1   qtl2   type       value   # # # -k     1 # trait -number     3 # #      #  ..chrom..markr.    .recombil.    .recombir.    .additive.    .dominance -l     1     15     61         0.0782        0.0261        0.1200        0.0000 # #   qtl1   qtl2   type       value   # # # #end of block of information # -end model #

now want read rows begins -l , save them in data.frame. know way achieve this? thanks. 

datl <- readlines(textconnection("#  -start model # # here data on qtls... # -t     3   number of traits # # -k     1 # trait -number     1 # #      #  ..chrom..markr.    .recombil.    .recombir.    .additive.    .dominance -l     1      2     19         0.0823        0.0028        1.1712        0.0000 # #   qtl1   qtl2   type       value   # # # -k     1 # trait -number     2 # #      #  ..chrom..markr.    .recombil.    .recombir.    .additive.    .dominance -l     1      2     14         0.0309        0.0564        0.4635        0.0000 # #   qtl1   qtl2   type       value   # # # -k     1 # trait -number     3 # #      #  ..chrom..markr.    .recombil.    .recombir.    .additive.    .dominance -l     1     15     61         0.0782        0.0261        0.1200        0.0000 # #   qtl1   qtl2   type       value   # # # #end of block of information # -end model #"))

now code:

> goodl <- grepl("^.l", datl) > datl[goodl] [1] "-l     1      2     19         0.0823        0.0028        1.1712        0.0000" [2] "-l     1      2     14         0.0309        0.0564        0.4635        0.0000" [3] "-l     1     15     61         0.0782        0.0261        0.1200        0.0000"   > read.table(text=datl[goodl])[ ,-1]   v2 v3 v4     v5     v6     v7 v8 1  1  2 19 0.0823 0.0028 1.1712  0 2  1  2 14 0.0309 0.0564 0.4635  0 3  1 15 61 0.0782 0.0261 0.1200  0

the 2 or 3 tricks constructing logical index pick lines have 'l' in second position , passing "good stuff" read.table character vector , removing extraneous column of "-l"'s.


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