From: William James <w_a_x_man@...>
Date: 2007-10-19T02:20:03+09:00
Subject: Re: extracting values from consecutive lines

On Oct 17, 11:03 am, baptiste Auguié <ba...@exeter.ac.uk> wrote:
> Hello,
>
> This is a basic question, as I'm very new to Ruby. I have a text file
> 'input.dat' containing the following data and text:
>
> > some text
> > some text...
>
> > angle          value1            value2
>
> > 156.00        3.3688E-03        1.7040E-03
> > 157.00        3.2919E-03        1.7118E-03
> > 158.00        3.2140E-03        1.7190E-03
> > 159.00        3.1354E-03        1.7258E-03
> > 160.00        3.0560E-03        1.7320E-03
> > 161.00        2.9760E-03        1.7378E-03
> > 162.00        2.8956E-03        1.7431E-03
> > 163.00        2.8148E-03        1.7479E-03
> > 164.00        2.7338E-03        1.7523E-03
> > 165.00        2.6526E-03        1.7562E-03
> > 166.00        2.5714E-03        1.7597E-03
> > 167.00        2.4902E-03        1.7628E-03
>
> I would like to extract the 3 columns of data for several consecutive
> lines (say, from angle = 158 to 165). These values should be stored
> in some array or vector. How can I do that in Ruby?
>
> Many thanks,
>
> baptiste

#!awk -f
/^158/, /^165/ { count++
  for (i=1; i<=NF; i++)
    a[count, i] = $i + 0
}
END {
  for (i=1; (i,1) in a; i++)
  { for (j=1; (i,j) in a; j++)
      printf "%f ", a[i,j]
    print
  }
}