How order a data matrix using awk?


 
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# 1  
Old 02-21-2014
How order a data matrix using awk?

is it possible to order the following row clusters from ascending to descending. thanx in advance


input

Code:
1       2       4       0
1       2       4       0
3       3       3       3
1       5       1       0
1       5       1       0
6       0       0      0
5       1      1       1
1       6       1      1

output
Code:
6       0       0      0
5       1      1       1
1       6       1      1
1       5       1       0
1       5       1       0
1       2       4       0
1       2       4       0
3       3       3       3

# 2  
Old 02-21-2014
What have you tried?
# 3  
Old 02-21-2014
I did some thing like this (at least to get the top clusters that I wanted).

Code:
awk '{if ($1> $2&&$3&&$4) print $0}'
awk '{if ($2> $1&&$3&&$4) print $0}'
awk '{if ($3> $2&&$1&&$4) print $0}'
awk '{if ($4> $2&&$3&&$1) print $0}'

# 4  
Old 02-21-2014
Hi,

Could be easily done using sort.

Code:
sort -nr

Sould be fine.
# 5  
Old 02-21-2014
Your code in #3 and you output specification seems to suggest you first would like to print the line that have the last maximum in the first column, then the second column, etc..
For starters you could try something like this, where the output is grouped but not sorted.
Code:
awk '
  {
    m=1
    for(i=1; i<=NF; i++) if($m<=$i)m=i
    A[m]=A[m] $0 ORS
  } 
  END{
    for(i=1; i<=4; i++) printf "%s",A[i]
  }
' file

Output:
Code:
6       0       0      0
5       1      1       1
1       5       1       0
1       5       1       0
1       6       1      1
1       2       4       0
1       2       4       0
3       3       3       3

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