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Top Forums Shell Programming and Scripting Convert a 3 column tab delimited file to a matrix Post 302779519 by mirni on Tuesday 12th of March 2013 11:02:00 PM
Old 03-13-2013
Try this:
Code:
awk '
{a[$1,$2]=$3; b[$1];}
END{
  for(i in b)   #print header
    printf("\t%s",i);  
  printf("\n");
  for(i in b) { #each row
     printf("%s\t",i); 
     for(j in b)  #each column
        printf("%d\t", a[i,j]);
     printf("\n");
   } 
}' SUBSEP="\t" input.txt

Not that the rows/columns are not sorted.

But honestly, for this kind of data-mangling job, you are better off using some other data processing tool. E.g. with GNU R and "reshape" package it's piece of cake:
Code:
 d = read.table("mydata.txt")
 library(reshape)
 cast(d, V1 ~ V2 )


Last edited by mirni; 03-13-2013 at 12:17 AM.. Reason: R addendum
These 2 Users Gave Thanks to mirni For This Post:
 

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MAXDB_FIELD_SEEK(3)							 1						       MAXDB_FIELD_SEEK(3)

maxdb_field_seek - Set result pointer to a specified field offset

       Procedural style

SYNOPSIS
bool maxdb_field_seek (resource $result, int $fieldnr) DESCRIPTION
Object oriented style bool maxdb_result::field_seek (int $fieldnr) Sets the field cursor to the given offset. The next call to maxdb_fetch_field(3) will retrieve the field definition of the column associ- ated with that offset. Note To seek to the beginning of a row, pass an offset value of zero. RETURN VALUES
maxdb_field_seek(3) returns previuos value of field cursor. EXAMPLES
Example #1 Object oriented style <?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s ", maxdb_connect_error()); exit(); } $query = "SELECT name, cno from hotel.customer ORDER BY cno"; if ($result = $maxdb->query($query)) { /* Get field information for 2nd column */ $result->field_seek(1); $finfo = $result->fetch_field(); printf("Name: %s ", $finfo->name); printf("Table: %s ", $finfo->table); printf("max. Len: %d ", $finfo->max_length); printf("Flags: %d ", $finfo->flags); printf("Type: %d ", $finfo->type); $result->close(); } /* close connection */ $maxdb->close(); ?> Example #2 Procedural style <?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s ", maxdb_connect_error()); exit(); } $query = "SELECT name, cno from hotel.customer ORDER BY cno"; if ($result = maxdb_query($link, $query)) { /* Get field information for 2nd column */ maxdb_field_seek($result, 1); $finfo = maxdb_fetch_field($result); printf("Name: %s ", $finfo->name); printf("Table: %s ", $finfo->table); printf("max. Len: %d ", $finfo->max_length); printf("Flags: %d ", $finfo->flags); printf("Type: %d ", $finfo->type); maxdb_free_result($result); } /* close connection */ maxdb_close($link); ?> The above example will output something similar to: Name: NAME Table: max. Len: 10 Flags: -1 Type: 2 SEE ALSO
maxdb_fetch_field(3). PHP Documentation Group MAXDB_FIELD_SEEK(3)
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