Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Get mean of two columns

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Get mean of two columns
# 1  
Old 09-11-2012
Get mean of two columns
Hi,

I have a file like this.

Code:
chr     begin     end
1        10         20
2        30         35

and want to create an extra column "middle" which contains the middle value of the 2nd and 3th column.
So that the output will look like this:

Code:
chr     begin     end     middle
1        10         20       15
2        30         35       33

Could somebody help me with this?

Thanks!
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!
Last edited by vgersh99; 09-11-2012 at 01:00 PM.. Reason: once again - code tags, PLEASE!
# 2  
Old 09-11-2012
Code:
awk '{print $0, (FNR==1)?"middle":int((($NF)+$(NF-1))/2)}' myFile

# 3  
Old 09-11-2012
Try:
Code:
awk 'NR>1 {NF=4;$4=($2+$3)/2}1' file

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Evaluate 2 columns, add sum IF two columns satisfy the condition

HI All, I'm embedding SQL query in Script which gives following output: Assignee Group Total ABC Group1 17 PQR Group2 5 PQR Group3 6 XYZ Group1 10 XYZ Group3 5 I have saved the above output in a file. How do i sum up the contents of this output so as to get following output: ... (4 Replies)
Discussion started by: Khushbu
4 Replies

2. Shell Programming and Scripting

Request: How to Parse dynamic SQL query to pad extra columns to match the fixed number of columns

Hello All, I have a requirement in which i will be given a sql query as input in a file with dynamic number of columns. For example some times i will get 5 columns, some times 8 columns etc up to 20 columns. So my requirement is to generate a output query which will have 20 columns all the... (7 Replies)
Discussion started by: vikas_trl
7 Replies

3. Shell Programming and Scripting

Compare 2 csv files by columns, then extract certain columns of matcing rows

Hi all, I'm pretty much a newbie to UNIX. I would appreciate any help with UNIX coding on comparing two large csv files (greater than 10 GB in size), and output a file with matching columns. I want to compare file1 and file2 by 'id' and 'chain' columns, then extract exact matching rows'... (5 Replies)
Discussion started by: bkane3
5 Replies

4. Shell Programming and Scripting

Changing integer columns to floating decimal columns

I have a document that has 7 columns. eg. $1 $2 $3 $4 $5 $6 $7 string string string string integer integer integer The 6th and 7th columns are a mix of integers and floating decimals (with 4 decimal places). I need to convert the last 2 columns so that all... (3 Replies)
Discussion started by: kadm
3 Replies

5. Shell Programming and Scripting

Evaluate 2 columns, add sum IF two columns match on two rows

Hi all, I know this sounds suspiciously like a homework course; but, it is not. My goal is to take a file, and match my "ID" column to the "Date" column, if those conditions are true, add the total number of minutes worked and place it in this file, while not printing the original rows that I... (6 Replies)
Discussion started by: mtucker6784
6 Replies

6. Shell Programming and Scripting

Deleting all the fields(columns) from a .csv file if all rows in that columns are blanks

Hi Friends, I have come across some files where some of the columns don not have data. Key, Data1,Data2,Data3,Data4,Data5 A,5,6,,10,, A,3,4,,3,, B,1,,4,5,, B,2,,3,4,, If we see the above data on Data5 column do not have any row got filled. So remove only that column(Here Data5) and... (4 Replies)
Discussion started by: ks_reddy
4 Replies

7. Shell Programming and Scripting

Combine columns from many files but keep them aligned in columns-shorter left column issue

Hello everyone, I searched the forum looking for answers to this but I could not pinpoint exactly what I need as I keep having trouble. I have many files each having two columns and hundreds of rows. first column is a string (can have many words) and the second column is a number.The files are... (5 Replies)
Discussion started by: isildur1234
5 Replies

8. UNIX for Advanced & Expert Users

Help in Deleting columns and Renaming Mutliple columns in a .Csv File

Hi All, i have a .Csv file in the below format startTime, endTime, delta, gName, rName, rNumber, m2239max, m2239min, m2239avg, m100016509avg, m100019240max, metric3min, m100019240avg, propValues 11-Mar-2012 00:00:00, 11-Mar-2012 00:05:00, 300.0, vma3550a, a-1_CPU Index<1>, 200237463, 0.0,... (9 Replies)
Discussion started by: mahi_mayu069
9 Replies

9. UNIX for Dummies Questions & Answers

Removing columns from a text file that do not have any values in second and third columns

I have a text file that has three columns. But at the end of the text file, there are trailing lines that have missing second and third columns: 4 0.04972604 KLHL28 4 0.0497332 CSTB 4 0.04979822 AIF1 4 0.04983331 DECR2 4 0.04990344 KATNB1 4 4 4 4 How can I remove the trailing... (3 Replies)
Discussion started by: evelibertine
3 Replies

10. Shell Programming and Scripting

Single command for add 2 columns and remove 2 columns in unix/performance tuning

Hi all, I have created a script which adding two columns and removing two columns for all files. Filename: Cust_information_1200_201010.txt Source Data: "1","Cust information","123","106001","street","1-203 high street" "1","Cust information","124","105001","street","1-203 high street" ... (0 Replies)
Discussion started by: onesuri
0 Replies
Login or Register to Ask a Question