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Fill in missing numbers in range

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# 1  
Old 05-16-2006
Fill in missing numbers in range
I need to edit a list of numbers on the following form:

1 1.0
2 1.4
5 2.1
7 1.9

I want:
1 1.0
2 1.4
3 0.0
4 0.0
5 2.1
6 0.0
7 1.9

(i want to add the missing number in column 1 together with 0.0 in column 2).

I guess it is rather trivial but i didn't even manage to read column 1 and column 2 into separate variables (except from in awk, but it didn't help me much...).

Any ideas how to get started?
Thanks,
Howie
# 2  
Old 05-16-2006
more clarity
Could you be more clear in what you are trying to achieve. Are you reading from one file and trying to generate a list of new nos based on certain conditions or you have 2 files and are you trying to merge it???Or do you want to just read the file1 into variables??
# 3  
Old 05-16-2006
Sorry.

I read the list from one file, and want to write to a new file. The only condition is that i want to have "complete" listing, with a complete range from the lowest number to the highest number, which in this case is from 1-7.

Thanks for your response!
# 4  
Old 05-16-2006
how about this
awk 'BEGIN{lno=1} {while(lno != $1) {print lno,"0.0";lno++;}} {print; lno++;}' filename
# 5  
Old 05-16-2006
Thank You very much! It works perfect!

A bit over the top for me, but i'll try and figure out how it works. Hopefully i will learn something.

Thanks again,
Howie
# 6  
Old 05-17-2006
Quote:
awk 'BEGIN{lno=1} {while(lno != $1) {print lno,"0.0";lno++;}} {print; lno++;}' filename
Can any body put code for the same with "sed"?
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