Class: GraphKit::DataKit

Inherits:
KitHash show all
Includes:
Log
Defined in:
lib/graphkit.rb,
lib/graphkit/gnuplot.rb

Overview

end

Constant Summary collapse

AXES = 
GraphKit::AXES

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from KitHash

from_hash, #inspect

Methods included from Kit

#check, #method_missing

Methods inherited from Hash

#modify

Constructor Details

#initialize(options = {}) ⇒ DataKit

attr_accessor :labels, :ranges, :has_legend, :units, :dimensions



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# File 'lib/graphkit.rb', line 454

def initialize(options = {})
  super()
  self[:axes] = {}
  absorb options
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Kit

Class Method Details

.autocreate(hash) ⇒ Object 



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# File 'lib/graphkit.rb', line 460

def self.autocreate(hash)
  new.autocreate(hash)
end

Instance Method Details

#autocreate(hash) ⇒ Object 



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# File 'lib/graphkit.rb', line 464

def autocreate(hash)
  logf :autocreate
  hash.each do |key, value|
#       puts value.inspect
    if AXES.include? key
      self[:axes][key] = AxisKit.autocreate(value)
    else 
      raise ArgumentError.new("bad key value pair in autocreate: #{key.inspect}, #{value.inspect}")
    end
#       puts self[key].inspect
  end
#     pp self
  first = true
  self.title = AXES.map{|axis| axes[axis] ? axes[axis].title : nil}.compact.reverse.inject("") do |str, name|
    str + name + (first ? (first = false; ' vs ') : ', ')
  end
  self.title = self.title.sub(/, $/, '').sub(/ vs $/, '')
  check_integrity
  self
end

#check_integrity ⇒ Object

Raises:



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# File 'lib/graphkit.rb', line 485

def check_integrity
  logf :check_integrity
  check(['title.class', [String, NilClass]], ['with.class', [String, NilClass]],  ['axes.class', Hash])
  axes.keys.each do |key|
      check(["key #{key} from a datakit.axes", key, AXES])
    check(["self.axes[#{key.inspect}].class", AxisKit])
    self.axes[key].check_integrity
  end
#     axes.values.map{|axiskit| axiskit.data.to_a.size}.each_with_index do |size, index|
#       raise IntegrityError.new("Axis data sets in this datakit have different sizes than the function #{size}, #{f.shape[0]}") unless size == new_size
#       size
#     end
#     puts 'checking f.class', f.class
#     check(['f.class', CodeRunner::FunctionKit])
  
#     shape = f.shape
  log 'checking ranks'
  allowed_ranks = [[1], [1,1], [1,1,1], [1,1,2], [1,1,1,1], [1,1,2,2], [1,1,1,3]]
  rnks = ranks
  log rnks
  raise IntegrityError.new("The combination of ranks of your data cannot be plotted. Your data has a set of axes with ranks #{rnks.inspect}. (NB, rank 1 corresponds to a vector, rank 2 to a matrix and 3 to a third rank tensor). The only possible sets of types are #{allowed_ranks.inspect}") unless allowed_ranks.include? rnks
  passed = true
  case rnks
  when [1], [1,1], [1,1,1], [1,1,1,1]
    axes.values.map{|axiskit| axiskit.shape}.inject do |old, new|
#         puts old, new
      passed = false unless new == old
      old
    end
  when [1,1,2], [1,1,2,2]
#       passed = false unless axes[:x].shape == axes[:y].shape
    passed = false unless axes[:z].shape == [axes[:x].shape[0], axes[:y].shape[0]]
    passed = false unless axes[:z].shape == axes[:f].shape if axes[:f]
  when [1,1,1,3]
    axes.values_at(:x, :y, :z).map{|axiskit| axiskit.shape}.inject do |old, new|
      passed = false unless new == old
      old
    end
    passed = false unless axes[:f].shape == [axes[:x].shape[0], axes[:y].shape[0], axes[:z].shape[0]]
  end
  raise IntegrityError.new(%[The dimensions of this data do not match: \n#{axes.inject(""){|str, (axis, axiskit)| str + "#{axis}: #{axiskit.shape}\n"}}\nranks: #{rnks}]) unless passed 
#     log 'finished checking ranks'
  logfc :check_integrity
#     raise IntegrityError.new("function data must be a vector, or have the correct dimensions (or shape) for the axes: function dimensions: #{shape}; axes dimesions: #{axes_shape}") unless shape.size == 1 or axes_shape == shape
  return true
end

#dup ⇒ Object 



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# File 'lib/graphkit.rb', line 601

def dup
#     puts 'Datakit.dup'
  new = self.class.new(self)
  new.axes.each do |axis, value|
    new.axes[axis] = value.dup
  end
  new
end

#exclude_outliers ⇒ Object 



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# File 'lib/graphkit.rb', line 628

def exclude_outliers
  raise "Can only get rid of outliers for 1D or 2D data" if axes.size > 2
#     self.outliers = []
  if axes.size == 1
    data = axes[:x].data
    i = 0
    loop do 
      break if i > data.size - 2
      should_be = (data[i+1] + data[i-1]) / 2.0
      deviation = (should_be - data[i]).abs / data[i].abs
      if deviation > outlier_tolerance
        data.delete_at(i)
        i-=1
      end
      i+=1
    end
  else
    x_data = axes[:x].data
    data = axes[:y].data
    i = 0
    loop do 
      jump = 1
      loop do 
        break if i > data.size - 1 - jump
        break unless x_data[i+jump] == x_data[i-jump]
        jump += 1
      end
      break if i > data.size - 1 - jump
      should_be = data[i-jump] + (data[i+jump] - data[i-jump]) / (x_data[i+jump] - x_data[i-jump]) * (x_data[i] - x_data[i-jump]) #ie y1 + gradient * delta x
      deviation = (should_be - data[i]).abs / data[i].abs
      if deviation > outlier_tolerance
        data.delete_at(i)
        x_data.delete_at(i)
        i-=1
      end
      i+=1
    end
  end
#     p self.outliers
end

#extend_using(other) ⇒ Object 



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# File 'lib/graphkit.rb', line 546

def extend_using(other)
  raise "A dataset can only be extended using another dataset with the same ranks: the ranks of this dataset are #{ranks} and the ranks of the other dataset are #{other.ranks}" unless ranks == other.ranks
  axes.each do |key, axiskit|
    axiskit.extend_using(other.axes[key])
  end
end

#gnuplot ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 290

def gnuplot
#     p axes.values_at(*AXES).compact.zip(gnuplot_ranks)
  Gnuplot::DataSet.new(axes.values_at(*AXES).compact.zip(gnuplot_ranks).map{|axis, rank|  axis.data_for_gnuplot(rank) }) do |ds|
    (keys - [:axes, :outlier_tolerance, :outliers, :gnuplot_options]).each do |key|
      ds.set(key, self[key])
    end
    if @gnuplot_options
      @gnuplot_options.each do |opt, val|
        ds.set(opt, val)
      end
    end
#       ds.title = title
#       ds.with = [:lines, :points].inject(""){|str, opt| self[opt] ? str + opt.to_s : str }
#       p ds.with
  #  ds.with = "lines"
#           ds.linewidth = 4
  end
end

#gnuplot_options ⇒ Object Also known as: gp 



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# File 'lib/graphkit/gnuplot.rb', line 309

def gnuplot_options
  @gnuplot_options ||= GnuplotPlotOptions.new
  @gnuplot_options
end

#gnuplot_ranks ⇒ Object 



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# File 'lib/graphkit/gnuplot.rb', line 274

def gnuplot_ranks
  case axes.size
  when 1,2
    return ranks
  when 3
    return [1,1,2]
  when 4
    case ranks[2]
    when 1
      return [1,1,1,3]
    when 2
      return [1,1,2,2]
    end
  end
end

#plot_area_size ⇒ Object 



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# File 'lib/graphkit.rb', line 610

def plot_area_size
  ans = []
#     p data
  (axes.values_at(*AXES).compact).each do |axiskit|
    if range = axiskit.range
      ans.push range
      next
    else
#         p 'hello'
#         p data[0].axes[key]
      axdata = axiskit.data #(key == :f) ? data[0].f.data : (next unless data[0].axes[key]; data[0].axes[key].data)
      next unless axdata
      ans.push [axdata.min, axdata.max]
    end
  end
  ans
end

#ranks ⇒ Object 



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# File 'lib/graphkit.rb', line 539

def ranks
  logf :ranks
  ans = shapes.map{|shape| shape.size}
  logfc :ranks
  return ans
end

#shapes ⇒ Object 



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# File 'lib/graphkit.rb', line 532

def shapes
  logf :shapes
  ans = axes.values_at(*AXES).compact.inject([]){|arr, axis| arr.push axis.shape}
  logfc :shapes
  return ans
end