Module: Statsample::Shorthand

Included in:
Analysis::Suite
Defined in:
lib/statsample/shorthand.rb

Overview

Module which provide shorthands for many methods.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.rnorm(n, mean = 0, sd = 1) ⇒ Object

Random generation for the normal distribution



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# File 'lib/statsample/shorthand.rb', line 43

def rnorm(n,mean=0,sd=1)
  rng=Distribution::Normal.rng(mean,sd)
  Daru::Vector.new_with_size(n) { rng.call}
end

.test_u(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 119

def test_u(*args)
  Statsample::Test::UMannWhitney.new(*args)
end

Instance Method Details

#boxplot(*args) ⇒ Object

Returns a Statsample::Graph::Boxplot



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# File 'lib/statsample/shorthand.rb', line 59

def boxplot(*args)
  Statsample::Graph::Boxplot.new(*args)
end

#cor(ds) ⇒ Object

Create a correlation matrix from a dataset



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# File 'lib/statsample/shorthand.rb', line 30

def cor(ds)
  Statsample::Bivariate.correlation_matrix(ds)
end

#cov(ds) ⇒ Object

Create a variance/covariance matrix from a dataset



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# File 'lib/statsample/shorthand.rb', line 34

def cov(ds)
  Statsample::Bivariate.covariate_matrix(ds)
end

#dataset(vectors = Hash.new) ⇒ Object Also known as: data_frame

Creates a new Daru::DataFrame Each key is transformed into a Symbol wherever possible.



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# File 'lib/statsample/shorthand.rb', line 49

def dataset(vectors=Hash.new)
  vectors = vectors.inject({}) do |ac,v| 
    n     = v[0].respond_to?(:to_sym) ? v[0].to_sym : v[0] 
    ac[n] = v[1]
    ac
  end
  Daru::DataFrame.new(vectors)
end

#dominance_analysis(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 99

def dominance_analysis(*args)
  Statsample::DominanceAnalysis.new(*args)
end

#dominance_analysis_bootstrap(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 103

def dominance_analysis_bootstrap(*args)
  Statsample::DominanceAnalysis::Bootstrap.new(*args)
end

#histogram(*args) ⇒ Object

Returns a Statsample::Graph::Histogram



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# File 'lib/statsample/shorthand.rb', line 63

def histogram(*args)
  Statsample::Graph::Histogram.new(*args)
end

#levene(*args) ⇒ Object

Returns a Statsample::Test::Levene



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# File 'lib/statsample/shorthand.rb', line 72

def levene(*args)
  Statsample::Test::Levene.new(*args)
end

#lr(*args) ⇒ Object

Other Shortcuts



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# File 'lib/statsample/shorthand.rb', line 91

def lr(*args)
  Statsample::Regression.multiple(*args)
end

#multiscale_analysis(*args, &block) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 115

def multiscale_analysis(*args,&block)
  Statsample::Reliability::MultiScaleAnalysis.new(*args,&block)
end

#names(ds) ⇒ Object

Retrieve names (fields) from dataset



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# File 'lib/statsample/shorthand.rb', line 26

def names(ds)
  ds.vectors.to_a
end

#pca(ds, opts = Hash.new) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 95

def pca(ds,opts=Hash.new)
  Statsample::Factor::PCA.new(ds,opts)
end

#polychoric(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 80

def polychoric(*args)
  Statsample::Bivariate::Polychoric.new(*args)
end

#principal_axis(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 76

def principal_axis(*args)
  Statsample::Factor::PrincipalAxis.new(*args)
end

#read_csv(filename, opts = Hash.new) ⇒ Object

Import an CSV file. Cache result by default



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# File 'lib/statsample/shorthand.rb', line 21

def read_csv(filename, opts=Hash.new)
  Daru::DataFrame.from_csv filename, opts
end

#read_excel(filename, opts = Hash.new) ⇒ Object

Import an Excel file. Cache result by default



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# File 'lib/statsample/shorthand.rb', line 16

def read_excel(filename, opts=Hash.new)
  Daru::DataFrame.from_excel filename, opts
end

#scale_analysis(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 107

def scale_analysis(*args)
  Statsample::Reliability::ScaleAnalysis.new(*args)
end

#scatterplot(*args) ⇒ Object

Returns a Statsample::Graph::Scatterplot



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# File 'lib/statsample/shorthand.rb', line 68

def scatterplot(*args)
  Statsample::Graph::Scatterplot.new(*args)
end

#skill_scale_analysis(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 111

def skill_scale_analysis(*args)
  Statsample::Reliability::SkillScaleAnalysis.new(*args)
end

#tetrachoric(*args) ⇒ Object 



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# File 'lib/statsample/shorthand.rb', line 84

def tetrachoric(*args)
  Statsample::Bivariate::Tetrachoric.new(*args)
end

#vector(*args) ⇒ Object

Create a Daru::Vector Analog to R’s c



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# File 'lib/statsample/shorthand.rb', line 39

def vector(*args)
  Daru::Vector[*args]
end