Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Interpolate between lines

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Interpolate between lines
# 1  
Old 06-25-2012
Interpolate between lines
Dear All,

I need your help, I have file like this :

Code:
input.txt
1000
1002
1006
1010
.
.
.

desired output:

Code:
1000
1001
1002
1004
1006
1008
1010
.
.
.

I need to interpolate betwen one line with next line,
algoritm is

bold_line= (line_upper + line_lower)/2

Thanks for advance,

Attila
Last edited by attila; 06-25-2012 at 12:32 AM.. Reason: wrong type
# 2  
Old 06-25-2012
How about:
Code:
awk 'p { print ($1+p)/2} p=$1' input.txt

This User Gave Thanks to Chubler_XL For This Post:
attila
# 3  
Old 06-25-2012
thank Chubler_XL, it solved.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to print lines from a files with specific start and end patterns and pick only the last lines?

Hi, I need to print lines which are matching with start pattern "SELECT" and END PATTERN ";" and only select the last "select" statement including the ";" . I have attached sample input file and the desired input should be as: INPUT FORMAT: SELECT ABCD, DEFGH, DFGHJ, JKLMN, AXCVB,... (5 Replies)
Discussion started by: nani2019
5 Replies

2. UNIX for Beginners Questions & Answers

Fill in missing hours and interpolate values using awk.

I have a time series data like this 40754,35.6931,51.3092,201610160700,21.0 40754,35.6931,51.3092,201610160800,23.0 40754,35.6931,51.3092,201610160900,24.0 40754,35.6931,51.3092,201610161000,24.0 40754,35.6931,51.3092,201610161300,25.0 40754,35.6931,51.3092,201610161400,23.0... (6 Replies)
Discussion started by: emirzaei
6 Replies

3. Shell Programming and Scripting

Bash arrays: rebin/interpolate smaller array to large array

hello, i need a bit of help on how to do this effectively in bash without a lot of extra looping or massive switch/case i have a long array of M elements and a short array of N elements, so M > N always. M is not a multiple of N. for case 1, I want to stretch N to fit M arrayHuge H = (... (2 Replies)
Discussion started by: f77hack
2 Replies

4. Shell Programming and Scripting

Merging multiple lines to columns with awk, while inserting commas for missing lines

Hello all, I have a large csv file where there are four types of rows I need to merge into one row per person, where there is a column for each possible code / type of row, even if that code/row isn't there for that person. In the csv, a person may be listed from one to four times... (9 Replies)
Discussion started by: RalphNY
9 Replies

5. Shell Programming and Scripting

ksh sed - Extract specific lines with mulitple occurance of interesting lines

Data file example I look for primary and * to isolate the interesting slot number. slot=`sed '/^primary$/,/\*/!d' filename | tail -1 | sed s'/*//' | awk '{print $1" "$2}'` Now I want to get the Touch line for only the associate slot number, in this case, because the asterisk... (2 Replies)
Discussion started by: popeye
2 Replies

6. Shell Programming and Scripting

Interpolate a variable with single quotes

I need to interpolate a shell variable in a code, i cannot share the exact code so this is an example i made up to describe the situation What I am trying to do here is try to wrap up the value of a variable in single quotes. This value needs to be passed to another program which would only... (4 Replies)
Discussion started by: sam05121988
4 Replies

7. Shell Programming and Scripting

search and replace, when found, delete multiple lines, add new set of lines?

hey guys, I tried searching but most 'search and replace' questions are related to one liners. Say I have a file to be replaced that has the following: $ cat testing.txt TESTING AAA BBB CCC DDD EEE FFF GGG HHH ENDTESTING This is the input file: (3 Replies)
Discussion started by: DeuceLee
3 Replies

8. Shell Programming and Scripting

Perl XML, find matching condition and grep lines and put the lines somewhere else

Hi, my xml files looks something like this <Instance Name="New York"> <Description></Description> <Instance Name="A"> <Description></Description> <PropertyValue Key="false" Name="Building A" /> </Instance> <Instance Name="B"> ... (4 Replies)
Discussion started by: tententen
4 Replies

9. Shell Programming and Scripting

while puting shell variable in mysql command value does not interpolate

port=$(ssh tms6@$x cat /tms6/scripts/start.lc.sh | grep -P '^\/tms6\/bin\/lc' | cut -d' ' -f3 | cut -b 3-6) tpsip=$(ssh tms6@$x cat /tms6/scripts/start.lc.sh | grep -P '^\/tms6\/bin\/lc' | cut -d' ' -f4 | cut -b 9-) # IFS="\n" set -- $port ... (1 Reply)
Discussion started by: rrd1986
1 Replies

10. UNIX for Dummies Questions & Answers

How to count lines - ignoring blank lines and commented lines

What is the command to count lines in a files, but ignore blank lines and commented lines? I have a file with 4 sections in it, and I want each section to be counted, not including the blank lines and comments... and then totalled at the end. Here is an example of what I would like my... (6 Replies)
Discussion started by: kthatch
6 Replies
Login or Register to Ask a Question