Class: Charty::Backends::JFreeChart

Inherits:
Object
  • Object
show all
Defined in:
lib/charty/backends/jfreechart.rb,
lib/charty/backends/jfreechart/version.rb

Constant Summary collapse

VERSION = 
"0.3.0"

Instance Method Summary collapse

Constructor Details

#initialize ⇒ JFreeChart

Returns a new instance of JFreeChart.



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# File 'lib/charty/backends/jfreechart.rb', line 19

def initialize
  @plot = ::ChartFactory
end

Instance Method Details

#label(x, y) ⇒ Object 



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# File 'lib/charty/backends/jfreechart.rb', line 23

def label(x, y)
end

#plot(plot, context, subplot: false) ⇒ Object 



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# File 'lib/charty/backends/jfreechart.rb', line 52

def plot(plot, context, subplot: false)
  case context.method
  when :bar
    dataset = DefaultCategoryDataset.new
    context.series.each do |data|
      data.ys.to_a.zip(Array.new(data.xs.size, data.label.to_s), data.xs.to_a.map(&:to_s)).each do |d|
        dataset.addValue(*d)
      end
    end
    title = context.title || ""
    xlabel = context.xlabel || ""
    ylabel = context.ylabel || ""
    plot.createBarChart(
      title,
      xlabel,
      ylabel,
      dataset,
      PlotOrientation::VERTICAL,
      true,
      false,
      false
    )
  when :barh
    dataset = DefaultCategoryDataset.new
    context.series.each do |data|
      data.ys.to_a.zip(Array.new(data.xs.size, data.label.to_s), data.xs.to_a.map(&:to_s)).each do |d|
        dataset.addValue(*d)
      end
    end
    title = context.title || ""
    xlabel = context.xlabel || ""
    ylabel = context.ylabel || ""
    plot.createBarChart(
      title,
      xlabel,
      ylabel,
      dataset,
      PlotOrientation::HORIZONTAL,
      true,
      false,
      false
    )
  when :box_plot
    # todo:
    raise NotImplementedError
  when :bubble
    dataset = MatrixSeriesCollection.new
    context.series.each do |data|
      # todo: fix args
      series = MatrixSeries.new(data.label.to_s, 1000, 1000)
      data.xs.to_a.zip(data.ys.to_a, data.zs.to_a).each do |series_param|
        series.update(*series_param)
      end
      dataset.addSeries(series)
    end
    title = context.title || ""
    xlabel = context.xlabel || ""
    ylabel = context.ylabel || ""
    plot.createBubbleChart(
      title,
      xlabel,
      ylabel,
      dataset,
      PlotOrientation::VERTICAL,
      true,
      false,
      false
    )
  when :curve
    dataset = DefaultCategoryDataset.new
    context.series.each do |data|
      data.xs.to_a.zip(data.ys.to_a).each do |a|
        dataset.addValue(a[1], data.label.to_s, a[0])
      end
    end
    title = context.title || ""
    xlabel = context.xlabel || ""
    ylabel = context.ylabel || ""
    plot.createLineChart(
      title,
      xlabel,
      ylabel,
      dataset,
      PlotOrientation::VERTICAL,
      true,
      false,
      false
    )
  when :scatter
    dataset = XYSeriesCollection.new
    context.series.each do |data|
      series = XYSeries.new(data.label.to_s)
      data.xs.to_a.zip(data.ys.to_a).each do |series_param|
        series.add(*series_param)
      end
      dataset.addSeries(series)
    end
    title = context.title || ""
    xlabel = context.xlabel || ""
    ylabel = context.ylabel || ""
    plot.createScatterPlot(
      title,
      xlabel,
      ylabel,
      dataset,
      PlotOrientation::VERTICAL,
      true,
      false,
      false
    )
  when :error_bar
    raise NotImplementedError
  when :hist
    # todo:
    raise NotImplementedError
  end
end

#render(context, filename) ⇒ Object 



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# File 'lib/charty/backends/jfreechart.rb', line 34

def render(context, filename)
  # todo: I'm not sure if I can only render.

  chart = plot(@plot, context)
  # todo: add options for width and height
  width = 1000
  height = 800
  if filename
    FileUtils.mkdir_p(File.dirname(filename))
    javafile = java.io.File.new(filename)
    ChartUtilities.saveChartAsPNG(javafile, chart, width, height)
  end
end

#render_layout(layout) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/charty/backends/jfreechart.rb', line 30

def render_layout(layout)
  raise NotImplementedError
end

#save(context, filename) ⇒ Object 



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# File 'lib/charty/backends/jfreechart.rb', line 48

def save(context, filename)
  # todo:
end

#series=(series) ⇒ Object 



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# File 'lib/charty/backends/jfreechart.rb', line 26

def series=(series)
  @series = series
end