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Top Forums Shell Programming and Scripting return a list of unique values of a column from csv format file Post 302361520 by phoeberunner on Tuesday 13th of October 2009 11:39:48 AM
Old 10-13-2009
Hi,

I get correct number of unique "SampleID", but not "SNP". I wonder why it didn't work for "SNP" (column 1).

I used
$ cat abc.csv | cut -f1 -d , | uniq
to get list of unique "SNP", and

$ cat abc.csv | cut -f2 -d , | uniq
to get list of unique "SmpleID"

I have total of 8,634,9539 rows in the csv file. It supposed to have 54,9997 unique SNP, but it turned out to be 8,634,9539, which is the same as total rows of file.

Again, I get correct number of unique SampleID, which is 167.

Thanks a bunch!
 

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MouseX::NativeTraits::Num(3pm)				User Contributed Perl Documentation			    MouseX::NativeTraits::Num(3pm)

NAME
MouseX::NativeTraits::Num - Helper trait for Num attributes SYNOPSIS
package Real; use Mouse; has 'integer' => ( traits => ['Number'], is => 'ro', isa => 'Num', default => 5, handles => { set => 'set', add => 'add', sub => 'sub', mul => 'mul', div => 'div', mod => 'mod', abs => 'abs', }, ); my $real = Real->new(); $real->add(5); # same as $real->integer($real->integer + 5); $real->sub(2); # same as $real->integer($real->integer - 2); DESCRIPTION
This provides a simple numeric attribute, which supports most of the basic math operations. PROVIDED METHODS
It is important to note that all those methods do in place modification of the value stored in the attribute. These methods are implemented within this package. set($value) Alternate way to set the value. add($value) Adds the current value of the attribute to $value. sub($value) Subtracts $value from the current value of the attribute. mul($value) Multiplies the current value of the attribute by $value. div($value) Divides the current value of the attribute by $value. mod($value) Returns the current value of the attribute modulo $value. abs Sets the current value of the attribute to its absolute value. METHODS
meta method_provider_class helper_type SEE ALSO
MouseX::NativeTraits perl v5.14.2 2011-12-04 MouseX::NativeTraits::Num(3pm)
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