Class: SvmToolkit::Svm::ContourDisplay

Inherits:
Object
  • Object
show all
Defined in:
lib/svm_toolkit/svm.rb

Overview

Swing Frame displaying the cross-validation performance.

Instance Method Summary collapse

Constructor Details

#initialize(xs, ys, zs) ⇒ ContourDisplay

Creates an instance of the ContourDisplay.

xs

array of x-coordinates

ys

array of y-coordinates

zs

array of values for matching (x, y) coordinate



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# File 'lib/svm_toolkit/svm.rb', line 164

def initialize(xs, ys, zs)
  super("Cross-Validation Performance")
  self.setSize(500, 400)

  cxs = Java::double[][ys.size].new
  cys = Java::double[][ys.size].new
  ys.size.times do |i|
    cxs[i] = Java::double[xs.size].new
    cys[i] = Java::double[xs.size].new
    xs.size.times do |j|
      cxs[i][j] = xs[j]
      cys[i][j] = ys[i]
    end
  end

  czs = Java::double[][ys.size].new
  ys.size.times do |i|
    czs[i] = Java::double[xs.size].new
    xs.size.times do |j|
      czs[i][j] = zs[i][j]
    end
  end

  plot = ContourPlot.new(
    cxs,
    cys,
    czs,
    10,
    false,
    "",
    "Cost (log-scale)",
    "Gamma (log-scale)",
    nil,
    nil
  )
  plot.colorizeContours(java.awt::Color.green, java.awt::Color.red)

  symbol = DiamondSymbol.new
  symbol.border_color = java.awt::Color.blue
  symbol.fill_color = java.awt::Color.blue
  symbol.size = 4

  run = PlotRun.new
  ys.size.times do |i|
    xs.size.times do |j|
      run.add(PlotDatum.new(cxs[i][j], cys[i][j], false, symbol))
    end
  end

  plot.runs << run

  panel = PlotPanel.new(plot)
  panel.background = java.awt::Color.white
  add panel

  self.setDefaultCloseOperation(javax.swing.WindowConstants::DISPOSE_ON_CLOSE)
  self.visible = true
end