awk adding counts together from column

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# 1  
Old 08-26-2013
[SOLVED] awk adding counts together from column


Im new treat me nicely, I have a headache Smilie

I have a script that seemed to work now it doesnt anyway, the last part is adding counts of unique items in a csv file eg

05492U34         38
05492U34         47

two columns, (many different values like this in file)

i want the output as in another file

05492U34         85

I have tried this but seem to have issues

awk -F, '{a[$1]+=$2;}END{for (i in a)print i ";" a[i];}' file.csv > file1.csv

any help appreciated for this dummy

thanks paul

Last edited by aniquebmx; 08-29-2013 at 11:06 AM.. Reason: additional code tags
# 2  
Old 08-26-2013
I notice a couple of things:

1. From your input file, you don't need the field separator.
2. From your output file, you don't need the ";" in the print statement, just replace with a comma.
3. The sum of the amounts in column 2 on your input file don't match the total in your output file.
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# 3  
Old 08-27-2013
values corrected ie 38 + 47 = 85 sorry got in a mess trying to put in code brackets
# 4  
Old 08-27-2013
Could you explain more on what is the issue? What is the output you are getting?

I see that your input and output are .csv files. Did you copy paste the input data from excel to here?

I used a comma delimiter for input and I am getting below results with the code you posted.

05492U34,         38
05492U34,         47


This User Gave Thanks to krishmaths For This Post:
# 5  
Old 08-27-2013
hi thanks for reply


both input output are csv files with around 1000 different values like below





this is copy paste from csv but its messed up, help

I get lots of 0 in column 3 which I dont want

---------- Post updated at 04:39 AM ---------- Previous update was at 04:29 AM ----------

here is code from script it works till the last line, i thinks its some csv, excel issue??

file=`grep '<un:UtranCell id="........' ${folder[$j]}/${folder[$j]}*updateNeighbours4_UtranRelation.xml >> countcellrelation.csv`
    sed -e 's/<un:UtranCell id="//g' -e 's/">//g' /home/nmsadm/XML/Coherence/countcellrelation.csv > /home/nmsadm/XML/Coherence/countcellrelations.csv
    awk -F, '{a[$1]++;}END{for (i in a)print i ";" a[i];}' countcellrelations.csv >> relations_locked_cells.csv
    awk -F, '{a[$1]+=$2;}END{for (i in a)print i ";" a[i];}' relations_locked_cells.csv > total_relations_with_file_4.csv

# 6  
Old 08-27-2013
Using your input file in post#1, a slight modification of your own code snippet will work:
awk '{a[$1]+=$2} END{for (i in a)print i "\t" a[i];}' file
05492U34    85

EDIT: Looking at your post#5, I'm almost sure the input file will not be what you posted in post#1; the field separator will be ";", won't it?
This User Gave Thanks to RudiC For This Post:
# 7  
Old 08-28-2013
Hi all

thanks to all of you for replying, most helpful, I have learned something, i will thank all of you

Ive fixed it, couple of things the field seperator (you were right Rudi)

also am using KSH so nawk needed

here is code now

nawk -F";" '{a[$1]+=$2;}END{for (i in a)print i ";" a[i];}' relations_locked_cells.csv > total_relations_with_file_4.csv

got a small issue still with leading white space in the xml but can fix with notepad++ trying to find sed but thats another story Smilie
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