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Using array commands in 2 files in the same time

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# 1  
Old 11-12-2012
comparing values in 2 files (awk array)
Hi bodies.
You think is it possible to make arrays from 2 different files in a same time and then for example compare the values in these 2 arrays or any other instruction
for example, I have:
Code:
 
38558   29   31
 38557   28   31
 38556   23   31
 38555   08   31
 38554   08   28
 38553   21   31
 38552   21   28
 38551   01   28
 38549   25   31
 38548   25   28

in first file and also I have
Code:
 32782   28   18
 32783   02   18
 32784   01   18
 32785   29   18
 32786   25   23
 32787   25   18
 32788   00   18
 32789   25   26
 32790   02   23
 32791   29   26
 32792   23   26
 32793   01   23
 32794   28   23

in second file
and I'm going to do something like:
Code:
BEGIN{print"//start";P=0}

{X1[NR]=$1;Y1[NR]=$2;Z1[NR]=$3;}
{X2[NR]=$1;Y2[NR]=$2;Z2[NR]=$3;}

and then compare for example Y1[3] & Y2[2]
Thanks for your help
Last edited by Behrouzx77; 11-12-2012 at 01:09 PM..
# 2  
Old 11-12-2012
try:
Code:
awk '
BEGIN{print"//start";P=0}
 
{X1[NR]=$1;Y1[NR]=$2;Z1[NR]=$3; getline < f;
 X2[NR]=$1;Y2[NR]=$2;Z2[NR]=$3;}
' f=file2 file1

This User Gave Thanks to rdrtx1 For This Post:
Behrouzx77
# 3  
Old 11-13-2012
Thanks rdrtx1

another question is if for example I need to refer to length of these arrays in the body what should I do?(I mean NR of each array)

Code:
 for (j=0 ; j<=NR2 ;j++){
 for (i=0 ; i<=NR1;i++)

with this syntax I face error and AWK does not know NR1 & NR2.
How can I address NR1 & NR2?
# 4  
Old 11-13-2012
In the example, file1 NR is the only NR. So NR is the same for both arrays.
# 5  
Old 11-13-2012
You mean I can't have 2 different NR even if I have 2 files with different sizes?
# 6  
Old 11-13-2012
Not with this example solution of reading line by line of each file at the same time.
# 7  
Old 11-13-2012
Well, try this:
Code:
awk 'FNR==NR {X1[FNR]=$1;NR1=FNR;next}
     {X2[FNR]=$1}
     END {for (i=1;i<=NR1;i++) print  "X1: ", X1[i],",\tX2: ", X2[i], i; for (i=NR1+1;i<=FNR;i++) print "X1:\t,\tX2: ", X2[i], i}
    ' file1 file2
X1:  38558 ,    X2:  32782 1
X1:  38557 ,    X2:  32783 2
X1:  38556 ,    X2:  32784 3
X1:  38555 ,    X2:  32785 4
X1:  38554 ,    X2:  32786 5
X1:  38553 ,    X2:  32787 6
X1:  38552 ,    X2:  32788 7
X1:  38551 ,    X2:  32789 8
X1:  38549 ,    X2:  32790 9
X1:  38548 ,    X2:  32791 10
X1:        ,    X2:  32792 11
X1:        ,    X2:  32793 12
X1:        ,    X2:  32794 13

This User Gave Thanks to RudiC For This Post:
Behrouzx77
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