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Top Forums Programming awk to count occurrence of strings and loop for multiple columns Post 302919042 by Don Cragun on Saturday 27th of September 2014 04:20:00 AM
Old 09-27-2014
Quote:
Originally Posted by iling14
Hi Don,

Thanks for your response. I'm currently using redhat. The line max is about 100k lines, while the number of fields are 100.

Yup, my desired output shall be what you have corrected. I manage to do the count for column by column, but wonder how could i perform a for loop one shot for 100 columns.Smilie

Smilie
You didn't answer most of my questions. But, now that I know that you're using a Linux system, I know that your version of awk will handle pretty much unlimited line lengths.

I'm still trying to get a feel for what the input and output data is going to look like. I'm assuming that the 100k number you gave is the number of lines in your input file (not the number of bytes in the longest line in your input file). Assuming that the numbers in the 1st column of your input are unique and that there are 6 distinct values in the other columns (A, G, C, T, D, and E) that means that we are converting 100k input rows with a maximum line length of about 210 bytes each into six output data lines (plus one header line) with a maximum line length approaching (3 * 99 spaces between fields +1 * 99 single letters for the col2 through col100 data + 99 * (6 digits + 1 comma) * 100k col1 values + 99 * 5 digits for the count values) 69.3 million bytes and an average line length approaching 11.5 million bytes.

Am I in the right ballpark here, or are my assumptions off? If my assumptions are off, where am I guessing wrong? Are there values other than A, G, C, T, D, and E that will appear in col2 through col100 in the input file?

Once you have created this file, do you have something that is going to be able to use this data?
 

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DBIx::Class::Schema::Loader::RelBuilder(3pm)		User Contributed Perl Documentation	      DBIx::Class::Schema::Loader::RelBuilder(3pm)

NAME
DBIx::Class::Schema::Loader::RelBuilder - Builds relationships for DBIx::Class::Schema::Loader SYNOPSIS
See DBIx::Class::Schema::Loader and DBIx::Class::Schema::Loader::Base. DESCRIPTION
This class builds relationships for DBIx::Class::Schema::Loader. This is module is not (yet) for external use. METHODS
new Arguments: $loader object generate_code Arguments: [ [ local_moniker1 (scalar), fk_info1 (arrayref), uniq_info1 (arrayref) ] [ local_moniker2 (scalar), fk_info2 (arrayref), uniq_info2 (arrayref) ] ... ] This generates the code for the relationships of each table. "local_moniker" is the moniker name of the table which had the REFERENCES statements. The fk_info arrayref's contents should take the form: [ { local_table => 'some_table', local_moniker => 'SomeTable', local_columns => [ 'col2', 'col3' ], remote_table => 'another_table_moniker', remote_moniker => 'AnotherTableMoniker', remote_columns => [ 'col5', 'col7' ], }, { local_table => 'some_other_table', local_moniker => 'SomeOtherTable', local_columns => [ 'col1', 'col4' ], remote_table => 'yet_another_table_moniker', remote_moniker => 'YetAnotherTableMoniker', remote_columns => [ 'col1', 'col2' ], }, # ... ], The uniq_info arrayref's contents should take the form: [ [ uniq_constraint_name => [ 'col1', 'col2' ], ], [ another_uniq_constraint_name => [ 'col1', 'col2' ], ], ], This method will return the generated relationships as a hashref keyed on the class names. The values are arrayrefs of hashes containing method name and arguments, like so: { 'Some::Source::Class' => [ { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ], { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ], ], 'Another::Source::Class' => [ # ... ], # ... } AUTHOR
See "AUTHOR" in DBIx::Class::Schema::Loader and "CONTRIBUTORS" in DBIx::Class::Schema::Loader. LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-06-08 DBIx::Class::Schema::Loader::RelBuilder(3pm)
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