Hi All,
I have a file which is having 3 columns as (string string integer)
a b 1
x y 2
p k 5
y y 4
.....
.....
Question:
I want get the unique value of column 2 in a sorted way(on column 2) and the sum of the 3rd column of the corresponding rows. e.g the above file should return the... (6 Replies)
Hi all I have a need of searching some pattern in file by month and then count unique records
D11
G11
R11 -------> Pattern available in file
S11
Jan$1 to $5 column contains some records in which I want to find unique
for this purpose I have written script like below
awk '/Jan/ ||... (4 Replies)
Hi, I have tab-deliminated data similar to the following:
dot is-big 2
dot is-round 3
dot is-gray 4
cat is-big 3
hot in-summer 5
I want to count the frequency of each individual "unique" value in the 1st column. Thus, the desired output would be as follows:
dot 3
cat 1
hot 1
is... (5 Replies)
Hello, I'm trying to used awk but am new to this. I have a file like this:
Bob is a good boy
Bob is a strange person
Bob is a good dancer
Jane can party
Jane is a good girl
Jane is batty
I'd like to get this:
Bob is a good boy
is a strange person
is a good dancer
Jane... (4 Replies)
I am trying to sort, do uniq by 1st column and report this 4 columns tab delimiter table , eg
chr10:112174128 rs2255141 2E-10 Cholesterol, total
chr10:112174128 rs2255141 7E-16 LDL
chr10:17218291 rs10904908 3E-11 HDL Cholesterol
chr10:17218291 rs970548 8E-9 TG... (4 Replies)
Background:
I have a file of thousands of potential SSR primers from Batch Primer 3.
I can't use primers that will contain the same sequence ID or sequence as another primer.
I have some basic shell scripting skills, but not enough to handle this.
What you need to know:
I need to remove the... (1 Reply)
Hi All,
Does anyone have any suggestions/examples of how i could show only lines where the first field is not duplicated. If the first field is listed more than once it shouldnt be shown even if the other columns make it unique.
Example file :
876,RIBDA,EC2
876,RIBDH,EX7
877,RIBDF,E28... (4 Replies)
Hello,
I am trying to count unique rows in my file based on 4 columns (2-5) and to output its frequency in a sixth column. My file is tab delimited
My input file looks like this:
Colum1 Colum2 Colum3 Colum4 Coulmn5
1.1 100 100 a b
1.1 100 100 a c
1.2 200 205 a d
1.3 300 301 a y
1.3 300... (6 Replies)
What is an efficient way of counting the number of unique values in a 400 column by 1000 row array and outputting the counts per column, assuming the unique values in the array are:
A, B, C, D
In other words the output should look like: Value COL1 COL2 COL3
A 50 51 52... (16 Replies)
Discussion started by: Geneanalyst
16 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)