Lokesh Sharma lokeshh

## gist:5217afa67e5307ed8ba7
lokeshh:~/workspace/nmatrix (master) $ bundle exec rake clean
lokeshh:~/workspace/nmatrix (master) $ rake compile --trace nmatrix_plugins=lapacke
** Invoke compile (first_time)
** Invoke compile:x86_64-linux (first_time)
** Invoke compile:nmatrix:x86_64-linux (first_time)
** Invoke copy:nmatrix:x86_64-linux:2.2.1 (first_time)
** Invoke lib/ (first_time, not_needed)
** Invoke tmp/x86_64-linux/nmatrix/2.2.1/nmatrix.so (first_time)
** Invoke tmp/x86_64-linux/nmatrix/2.2.1/Makefile (first_time)
** Invoke tmp/x86_64-linux/nmatrix/2.2.1 (first_time)

## errors.cpp
In file included from /usr/include/c++/4.8/bits/hashtable.h:35:0,
                 from /usr/include/c++/4.8/unordered_map:47,
                 from lol.cpp:2:
/usr/include/c++/4.8/bits/hashtable_policy.h: In instantiation of ‘struct std::__detail::_Hash_code_base<std::array<int, 2ul>, std::pair<const std::array<int, 2ul>, int>, std::__detail::_Select1st, std::hash<std::array<int, 2ul> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>’:
/usr/include/c++/4.8/bits/hashtable_policy.h:1402:10:   required from ‘struct std::__detail::_Hashtable_base<std::array<int, 2ul>, std::pair<const std::array<int, 2ul>, int>, std::__detail::_Select1st, std::equal_to<std::array<int, 2ul> >, std::hash<std::array<int, 2ul> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >’
/usr/include/c++/4.8/bits/hashtable.h:174:11:   required from ‘class std::_Hashtable<std::array<int, 2ul>, std::pair<const std::array<int, 2ul>, int>,

## Contributions to SciRuby.md

      
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                lokeshh
                / Contributions to SciRuby.md
            
            
              Last active
              March 15, 2016 18:10
            
          
    Daru
Pull Requests [Merged]:

Dataframe#sort speed up: Improve DataFrame sort function performance. Add functionality to handle nils and make function optimal for advance as well for beginner's use.
Tune up sort: Improve Vector sort function performance. Add cabability to handle nils.
Insert nyaplot link in README: Insert hyperlink for nyaplot in README file.
Refactor indexing: Improve the structure of Index class to better accomodate other Index subclasses with it's use with Vector and DataFrame
Correct some spelling mistakes: Correct some spelling mistakes.
Set name of first column: Solved first column named as nil bug.


## gnuplotrb_error.rb
NoMethodError: undefined method `keys' for nil:NilClass
/var/lib/gems/2.1.0/gems/daru-0.1.2/lib/daru/index.rb:122:in `key'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/staff/dataset.rb:252:in `get_daru_columns'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/staff/dataset.rb:281:in `init_daru_vector'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/staff/dataset.rb:67:in `initialize'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:273:in `new'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:273:in `dataset_from_any'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:289:in `block in parse_datasets_array'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:289:in `map'
/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:289:in `parse_datasets_array'

## bar.html
<html lang='en'>
<head>
  <title>Nyaplot</title>
  <script src="http://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.14/require.min.js"></script>
  <script>if(window['d3'] === undefined ||
   window['Nyaplot'] === undefined){
    var path = {"d3":"https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min","downloadable":"http://cdn.rawgit.com/domitry/d3-downloadable/master/d3-downloadable"};


## statsample_error.rb
(venv) lokeshh:~/workspace/sciruby-notebooks (update_notebooks) $ gem uninstall statsample

You have requested to uninstall the gem:
        statsample-2.0.1

sciruby-full-0.2.7 depends on statsample (~> 2.0)
statsample-bivariate-extension-1.2.0 depends on statsample (~> 2.0)
statsample-glm-0.2.1 depends on statsample (~> 2.0)
If you remove this gem, these dependencies will not be met.
Continue with Uninstall? [yN]  y

## category.rb
module CategoricalData
  def size
    20
  end
end

class Vector
  def initialize type = nil
    self.extend(CategoricalData) if type == :category
  end

## formula.md

      
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                lokeshh
                / formula.md
            
            
              Last active
              March 30, 2016 11:44
            
          
    class Formula
  Formula class will be used by Statsample to parse a regression formula.
  It consist of two data members.
  attr_accessor :left_terms # This will store all the left terms. For example: ['y'] in case of 'y ~ a*b'
  attr_accessor :right_terms # This will store all the right terms. For example: ['a', 'b', ['a', 'b']]
  # in case of 'y ~ a*b'
  
  It will expose 'from_formula' function to the statsample to parse formulas
  For example to parse the formula 'y ~ a*b', Statsample will call the following function

  
## demo_formula.rb
=begin
Usage:
To convert expressions involving '*', '/' and brackets to expressions only involving '+' and ':' use #from_formula
>> Formula.new.from_formula '(a+b):(c+d)'
=> "a:c+a:d+b:c+b:d"
>> Formula.new.from_formula 'a*b*c*d'
=> "a+b+a:b+c+a:c+b:c+a:b:c+d+a:d+b:d+a:b:d+c:d+a:c:d+b:c:d+a:b:c:d"
=end

class Formula

## statsample::regression.md

      
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                lokeshh
                / statsample::regression.md
            
            
              Last active
              April 4, 2016 13:23
            
          
    Implement Formula language and categorical variable support in Statsample::Regression

Below is how Statsample performs regression.
def self.multiple(ds,y_var, opts=Hash.new)
  missing_data= (opts[:missing_data].nil? ) ? :listwise : opts.delete(:missing_data)
  if missing_data==:pairwise
     Statsample::Regression::Multiple::RubyEngine.new(ds,y_var, opts)
 else
	lokeshh:~/workspace/nmatrix (master) $ bundle exec rake clean
	lokeshh:~/workspace/nmatrix (master) $ rake compile --trace nmatrix_plugins=lapacke
	** Invoke compile (first_time)
	** Invoke compile:x86_64-linux (first_time)
	** Invoke compile:nmatrix:x86_64-linux (first_time)
	** Invoke copy:nmatrix:x86_64-linux:2.2.1 (first_time)
	** Invoke lib/ (first_time, not_needed)
	** Invoke tmp/x86_64-linux/nmatrix/2.2.1/nmatrix.so (first_time)
	** Invoke tmp/x86_64-linux/nmatrix/2.2.1/Makefile (first_time)
	** Invoke tmp/x86_64-linux/nmatrix/2.2.1 (first_time)
	In file included from /usr/include/c++/4.8/bits/hashtable.h:35:0,
	from /usr/include/c++/4.8/unordered_map:47,
	from lol.cpp:2:
	/usr/include/c++/4.8/bits/hashtable_policy.h: In instantiation of ‘struct std::__detail::_Hash_code_base<std::array<int, 2ul>, std::pair<const std::array<int, 2ul>, int>, std::__detail::_Select1st, std::hash<std::array<int, 2ul> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>’:
	/usr/include/c++/4.8/bits/hashtable_policy.h:1402:10: required from ‘struct std::__detail::_Hashtable_base<std::array<int, 2ul>, std::pair<const std::array<int, 2ul>, int>, std::__detail::_Select1st, std::equal_to<std::array<int, 2ul> >, std::hash<std::array<int, 2ul> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >’
	/usr/include/c++/4.8/bits/hashtable.h:174:11: required from ‘class std::_Hashtable<std::array<int, 2ul>, std::pair<const std::array<int, 2ul>, int>,
	NoMethodError: undefined method `keys' for nil:NilClass
	/var/lib/gems/2.1.0/gems/daru-0.1.2/lib/daru/index.rb:122:in `key'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/staff/dataset.rb:252:in `get_daru_columns'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/staff/dataset.rb:281:in `init_daru_vector'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/staff/dataset.rb:67:in `initialize'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:273:in `new'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:273:in `dataset_from_any'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:289:in `block in parse_datasets_array'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:289:in `map'
	/var/lib/gems/2.1.0/gems/gnuplotrb-0.3.3/lib/gnuplotrb/plot.rb:289:in `parse_datasets_array'
	<html lang='en'>
	<head>
	<title>Nyaplot</title>
	<script src="http://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.14/require.min.js"></script>
	<script>if(window['d3'] === undefined \|\|
	window['Nyaplot'] === undefined){
	var path = {"d3":"https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min","downloadable":"http://cdn.rawgit.com/domitry/d3-downloadable/master/d3-downloadable"};
	(venv) lokeshh:~/workspace/sciruby-notebooks (update_notebooks) $ gem uninstall statsample

	You have requested to uninstall the gem:
	statsample-2.0.1

	sciruby-full-0.2.7 depends on statsample (~> 2.0)
	statsample-bivariate-extension-1.2.0 depends on statsample (~> 2.0)
	statsample-glm-0.2.1 depends on statsample (~> 2.0)
	If you remove this gem, these dependencies will not be met.
	Continue with Uninstall? [yN] y
	module CategoricalData
	def size
	20
	end
	end

	class Vector
	def initialize type = nil
	self.extend(CategoricalData) if type == :category
	end
	=begin
	Usage:
	To convert expressions involving '*', '/' and brackets to expressions only involving '+' and ':' use #from_formula
	>> Formula.new.from_formula '(a+b):(c+d)'
	=> "a:c+a:d+b:c+b:d"
	>> Formula.new.from_formula 'abc*d'
	=> "a+b+a:b+c+a:c+b:c+a:b:c+d+a:d+b:d+a:b:d+c:d+a:c:d+b:c:d+a:b:c:d"
	=end

	class Formula