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Diff two files with threshold value

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# 1  
Old 09-15-2011
Diff two files with threshold value
i have two big file which have thousand of line.
i have to sort on two key fields then diff the file.

if the interger value of one of the column is less then or greater then 1 it should ignore it.

for example
File1
Code:
abc|7000|jhon|2.3
xyz|9000|sam|6.7
pqr|8000|kapi|4.6

File2
Code:
abc|7000|jhon|2.3
xyz|9000|sam|6.7
pqr|8000|kapi|4.5
uvw|1000|abe|5.6

diff Output --expected
Code:
uvw|1000|abe|5.6

the commands i tried out are below
Code:
sort file1 > sortfile1 |sort file2 sortfile2 | diff sortfile1 sortfile2

output

Code:
2c2,3
< pqr|8000|kapi|4.6
---
> pqr|8000|kapi|4.5
> uvw|1000|abe|5.6

Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!
Last edited by vgersh99; 09-15-2011 at 01:13 PM.. Reason: code tags, please!
# 2  
Old 09-15-2011
Hi,

Your explanation is not clear for me:

Quote:
i have two big file which have thousand of line.
Both files have same number of lines?

Quote:
i have to sort on two key fields then diff the file.
Which fields?

Quote:
if the interger value of one of the column is less then or greater then 1 it should ignore it.
I don't understand this.

Quote:
diff Output --expected

Code:
  uvw|1000|abe|5.6

I don't understand that output. Lines that exists in one file but not in the other?

Regards,
Birei
# 3  
Old 09-16-2011
Hi thanks for your response

1) both the file have different number of line
file1 may have 50 thousand records and file 2 may have 51 thousand record

2) I have to sort the file on the second and third column
for example
i have to sort first file1 and file2 on column 7000 and column jhon
Code:
abc|7000|jhon|2.3
xyz|9000|sam|6.7
pqr|8000|kapi|4.6


3) the file 1 have
Code:
pqr|8000|kapi|4.6

file 2 have
Code:
pqr|8000|kapi|4.5


there is difference of .1 in forth column (4.6 and 4.5)
the diff should ignore if the difference is of .1 in the forth column

4) if the difference is of more then .1 it should report in output

Last edited by Franklin52; 09-16-2011 at 03:42 AM.. Reason: Please use code tags, thank you
# 4  
Old 09-16-2011
Therefore, the output should be:

1.- Lines that exists only in one of the two files.
2.- Lines whose first three columns are the same but the difference between the number of the fourth is different from 0.1 or -0.1. In that case, the line of what file is what you have to write to output?

Regards,
Birei
# 5  
Old 09-16-2011
Thanks Birei for Quick response
Yes you are correct

Fourth column is Real number and if its difference is 0.1 or -0.1 it is acceptable so no need to be in output.

If the difference is more then 0.1 it should be in output.
let me put it in example

1) file1
Code:
abc|7000|jhon|2.3
xyz|9000|sam|6.7
pqr|8000|kapi|4.6
lmn|3000|kapi|4.6

2) file 2
Code:
abc|7000|jhon|2.3
xyz|9000|sam|6.7
pqr|8000|kapi|4.5
lmn|3000|kapi|4.1


Expectation
1)the third row is having diff of 0.1 so it is acceptable, not required to be in output

2) the forth row is having a diff more then 0.1 it is 0.5 so should be in the output.
Output
Code:
> lmn|3000|kapi|4.1
< lmn|3000|kapi|4.6

Last edited by Franklin52; 09-16-2011 at 06:40 AM.. Reason: Please use code tags, thank you
# 6  
Old 09-16-2011
do you want output if the file occurs in only 1 file, or only if it appears in both files and has a difference of more than 0.1 in column 3?
# 7  
Old 09-16-2011
yes
only if it appears in both files
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