Convert even rows to columns in linux/cli-CodePudding

I have a dataset similar to below:

37  151 36  34  40  56  59  42  28  38  60
1   11  0   0   2   2   3   4   0   0   4
35  158 35  37  40  56  58  48  31  40  72
1   2   1   1   0   0   0   0   1   0   0
32  132 32  30  36  57  53  35  25  34  54
8   36  4   8   8   7   13  13  3   6   14
40  162 36  38  41  66  64  46  27  35  60
0   2   0   0   1   0   0   0   1   1   2
32  151 31  34  41  58  66  45  33  40  66
0   5   3   2   1   2   0   1   1   4   6

I want to transform the even rows to even columns like this:

37 1 151 11 36 0 34 0 40 2 56 2 59 3 42 4 28 0 38 0 60 4
35 1 158 2 35 1 37 1 40 0 56 0 58 0 48 0 31 1 40 0 72 0
32 8 132 36 32 4 30 8 36 8 57 7 53 13 35 13 25 3 34 6 54 14
40 0 162 2 36 0 38 0 41 1 66 0 64 0 46 0 27 1 35 1 60 2
32 0 151 5 31 3 34 2 41 1 58 2 66 0 45 1 33 1 40 4 66 6

Basically, I would like to take the even rows and transform them as even columns while retaining the odd rows and odd columns the way they are.

CodePudding user response：

You can do it in a straight-forward manner with awk by saving each field of the the odd number rows in an array and then printing each array element in between the elements of each even number rows, e.g.

awk '
   FNR%2{for(i=1;i<=NF;i  )a[i]=$i; next} 
   {for(i=1;i<=NF;i  ) printf " = =", a[i],$i; print ""}
' file

Where the modulo of the record number (line) FNR is taken to determine odd/even and where odd, the fields are stored in the a[] array and then the next line (even) is printed where each field is printed after the corresponding field in a[].

Example Use/Output

You can adjust the output spacing as wanted. With your data in file you would get:

$ awk '
>    FNR%2{for(i=1;i<=NF;i  )a[i]=$i; next}
>    {for(i=1;i<=NF;i  ) printf " = =", a[i],$i; print ""}
> ' file
  37   1 151  11  36   0  34   0  40   2  56   2  59   3  42   4  28   0  38   0  60   4
  35   1 158   2  35   1  37   1  40   0  56   0  58   0  48   0  31   1  40   0  72   0
  32   8 132  36  32   4  30   8  36   8  57   7  53  13  35  13  25   3  34   6  54  14
  40   0 162   2  36   0  38   0  41   1  66   0  64   0  46   0  27   1  35   1  60   2
  32   0 151   5  31   3  34   2  41   1  58   2  66   0  45   1  33   1  40   4  66   6

Without Even Output Spacing:

$ awk '
   FNR%2{for(i=1;i<=NF;i  )a[i]=$i; next}
   {for(i=1;i<=NF;i  ) printf " %d %d", a[i],$i; print ""}
' file
 37 1 151 11 36 0 34 0 40 2 56 2 59 3 42 4 28 0 38 0 60 4
 35 1 158 2 35 1 37 1 40 0 56 0 58 0 48 0 31 1 40 0 72 0
 32 8 132 36 32 4 30 8 36 8 57 7 53 13 35 13 25 3 34 6 54 14
 40 0 162 2 36 0 38 0 41 1 66 0 64 0 46 0 27 1 35 1 60 2
 32 0 151 5 31 3 34 2 41 1 58 2 66 0 45 1 33 1 40 4 66 6