10-13-2009
return a list of unique values of a column from csv format file
Hi all,
I have a huge csv file with the following format of data,
[HEADER]
Num SNPs, 549997
Total SNPs,555352
Num Samples, 157
[Data]
SNP, SampleID, Allele1, Allele2
A001,AB1,A,A
A002,AB1,A,A
A003,AB1,A,A
...
...
...
I would like to write out a list of unique SNP (column 1). Could you let me know how to do this with UNIX command? Do I need to at firstl convert csv file to text file?
Thank you for your attention!
phoebe
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LEARN ABOUT DEBIAN
csv2mipe
CSV2MIPE(1) User Contributed Perl Documentation CSV2MIPE(1)
NAME
csv2mipe.pl - Generates MIPE file based on 3 tab-delimited files
based on MIPE version v1.1
arguments: * tab-delimited file with PCR-level data
* tab-delimited file with SNP-level data
* tab-delimited file with assay-level data
Columns in file with PCR-level data:
pcr_id
pcr_modified (might be multiple, divided by semi-colon ";")
pcr_project (might be multiple, divided by semi-colon ";")
pcr_researcher (might be multiple, divided by semi-colon ";")
pcr_species
source_type
source_id
design_seq
primer1_oligo
primer1_seq
primer1_tm
primer2_oligo
primer2_seq
primer2_tm
design_remark (might be multiple, divided by semi-colon ";")
use_seq
use_revcomp
use_remark (might be multiple, divided by semi-colon ";")
pcr_remark (might be multiple, divided by semi-colon ";")
Columns in file with SNP-level data:
pcr_id
snp_id
snp_pos
snp_amb
snp_remark (might be multiple, divided by semi-colon ";")
Columns in file with assay-level data:
pcr_id
snp_id
assay_id
assay_type
assay_enzyme
assay_oligo
assay_specific
assay_tail
assay_strand
assay_remark (might be multiple, divided by semi-colon ";")
SYNOPSIS
csv2mipe.pl <pcr_file.csv> <snp_file.csv> <assay_file.csv>
ADDITIONAL INFO
See http://mipe.sourceforge.net
AUTHOR
Jan Aerts (jan.aerts@bbsrc.ac.uk)
perl v5.14.2 2005-07-20 CSV2MIPE(1)