v0.2.1

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+ko_fi: kojix2
+patreon: kojix2

.gitignore

@@ -6,4 +6,5 @@
 /pkg/
 /spec/reports/
 /tmp/
+/vendor/
 *.lock

Gemfile

@@ -2,6 +2,3 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in uplot.gemspec
 gemspec
-
-gem 'minitest', '~> 5.0'
-gem 'rake', '~> 12.0'

README.md

@@ -1,13 +1,15 @@
-# Uplot
+# uplot
 
 [![Build Status](https://travis-ci.com/kojix2/uplot.svg?branch=master)](https://travis-ci.com/kojix2/uplot)
 [![Gem Version](https://badge.fury.io/rb/u-plot.svg)](https://badge.fury.io/rb/u-plot)
+[![Docs Latest](https://img.shields.io/badge/docs-latest-blue.svg)](https://rubydoc.info/gems/u-plot)
+[![The MIT License](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE.txt)
 
 Create ASCII charts on the terminal with data from standard streams in the pipeline. 
 
-:bar_chart: Powered by [UnicodePlot](https://github.com/kojix2/uplot)
+:bar_chart: Powered by [UnicodePlot](https://github.com/red-data-tools/unicode_plot.rb)
 
-:construction: Under development
+:construction: Under development! :construction:
 
 ## Installation
 
@@ -17,7 +19,7 @@ gem install u-plot
 
 ## Usage
 
-### histogram
+**histogram**
 
 ```sh
 ruby -r numo/narray -e "puts Numo::DFloat.new(1000).rand_norm.to_a" \
@@ -46,10 +48,20 @@ ruby -r numo/narray -e "puts Numo::DFloat.new(1000).rand_norm.to_a" \
                                 Frequency
 ```
 
+**scatter**
+
+```sh
+wget https://raw.githubusercontent.com/uiuc-cse/data-fa14/gh-pages/data/iris.csv -qO - \
+ | cut -f1-4 -d, \
+ | uplot scatter -H -d, -t IRIS -m 10
+```
+
 ## Development
 
 ## Contributing
 
+Bug reports and pull requests are welcome on GitHub at [https://github.com/kojix2/uplot](https://github.com/kojix2/uplot).
+
 ## License
 
 The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).

exe/uplot

@@ -2,4 +2,4 @@
 
 require 'uplot'
 
-Uplot::Command.new(ARGV).run
+Uplot::Command.new.run

lib/uplot.rb

@@ -1,46 +1,8 @@
-require 'uplot/version'
 require 'unicode_plot'
-require 'optparse'
+require 'uplot/version'
+require 'uplot/preprocessing'
+require 'uplot/plot'
+require 'uplot/command'
 
 module Uplot
-  class Command
-    def initialize(argv)
-      @params = {}
-      @ptype = nil
-      parse_options(argv)
-    end
-
-    def parse_options(argv)
-      parser = OptionParser.new
-      parser.order!(argv)
-      @ptype = argv.shift
-
-      subparsers = Hash.new do |_h, k|
-        warn "no such subcommand: #{k}"
-        exit 1
-      end
-
-      subparsers['hist'] = OptionParser.new.tap do |sub|
-        sub.on('--nbins VAL') { |v| @params[:nbins] = v.to_i }
-        sub.on('-p') { |v| @params[:p] = v }
-      end
-
-      subparsers[@ptype].parse!(argv) unless argv.empty?
-    end
-
-    def run
-      input_lines = readlines.map(&:chomp)
-      case @ptype
-      when 'hist', 'histogram'
-        histogram(input_lines).render
-      end
-
-      puts input_lines if @params[:p]
-    end
-
-    def histogram(input_lines)
-      series = input_lines.map(&:to_f)
-      UnicodePlot.histogram(series, nbins: @params[:nbins])
-    end
-  end
 end

lib/uplot/command.rb

@@ -0,0 +1,276 @@
+require 'optparse'
+require_relative 'preprocessing'
+
+module Uplot
+  Data = Struct.new(:headers, :series)
+
+  class Command
+    Params = Struct.new(
+      # Sort me!
+      :title,
+      :width,
+      :height,
+      :border,
+      :margin,
+      :padding,
+      :color,
+      :xlabel,
+      :ylabel,
+      :labels,
+      :symbol,
+      :xscale,
+      :nbins,
+      :closed,
+      :canvas,
+      :xlim,
+      :ylim,
+      :grid,
+      :name
+    ) do
+      def to_hc
+        to_h.compact
+      end
+    end
+
+    attr_accessor :params, :plot_type
+    attr_reader :raw_inputs, :data, :fmt
+
+    def initialize
+      @params = Params.new
+
+      @plot_type = nil
+      @headers   = nil
+      @delimiter = "\t"
+      @transpose = false
+      @output    = false
+      @count     = false
+      @fmt       = 'xyy'
+
+      @raw_inputs = []
+      @debug      = false
+    end
+
+    def create_parser
+      OptionParser.new do |opt|
+        opt.program_name = 'uplot'
+        opt.version = Uplot::VERSION
+        opt.on('-o', '--output', TrueClass) do |v|
+          @output = v
+        end
+           .on('-d', '--delimiter VAL', String) do |v|
+          @delimiter = v
+        end
+           .on('-H', '--headers', TrueClass) do |v|
+          @headers = v
+        end
+           .on('-T', '--transpose', TrueClass) do |v|
+          @transpose = v
+        end
+           .on('-t', '--title VAL', String) do |v|
+          params.title = v
+        end
+           .on('-w', '--width VAL', Numeric) do |v|
+          params.width = v
+        end
+           .on('-h', '--height VAL', Numeric) do |v|
+          params.height = v
+        end
+           .on('-b', '--border VAL', Numeric) do |v|
+          params.border = v
+        end
+           .on('-m', '--margin VAL', Numeric) do |v|
+          params.margin = v
+        end
+           .on('-p', '--padding VAL', Numeric) do |v|
+          params.padding = v
+        end
+           .on('-c', '--color VAL', String) do |v|
+          params.color = v.to_sym
+        end
+           .on('-x', '--xlabel VAL', String) do |v|
+          params.xlabel = v
+        end
+           .on('-y', '--ylabel VAL', String) do |v|
+          params.ylabel = v
+        end
+           .on('-l', '--labels', TrueClass) do |v|
+          params.labels = v
+        end
+           .on('--fmt VAL', String) do |v|
+          @fmt = v
+        end
+           .on('--debug', TrueClass) do |v|
+          @debug = v
+        end
+      end
+    end
+
+    def parse_options(argv = ARGV)
+      main_parser = create_parser
+      parsers = Hash.new { |h, k| h[k] = create_parser }
+
+      parsers[:barplot] = \
+        parsers[:bar]
+        .on('--symbol VAL', String) do |v|
+          params.symbol = v
+        end
+        .on('--xscale VAL', String) do |v|
+          params.xscale = v
+        end
+        .on('--count', TrueClass) do |v|
+          @count = v
+        end
+
+      parsers[:count] = \
+        parsers[:c] # barplot -c
+        .on('--symbol VAL', String) do |v|
+          params.symbol = v
+        end
+
+      parsers[:histogram] = \
+        parsers[:hist]
+        .on('-n', '--nbins VAL', Numeric) do |v|
+          params.nbins = v
+        end
+        .on('--closed VAL', String) do |v|
+          params.closed = v
+        end
+        .on('--symbol VAL', String) do |v|
+          params.symbol = v
+        end
+
+      parsers[:lineplot] = \
+        parsers[:line]
+        .on('--canvas VAL', String) do |v|
+          params.canvas = v
+        end
+        .on('--xlim VAL', String) do |v|
+          params.xlim = get_lim(v)
+        end
+        .on('--ylim VAL', String) do |v|
+          params.ylim = get_lim(v)
+        end
+
+      parsers[:lineplots] = \
+        parsers[:lines]
+        .on('--canvas VAL', String) do |v|
+          params.canvas = v
+        end
+        .on('--xlim VAL', String) do |v|
+          params.xlim = get_lim(v)
+        end
+        .on('--ylim VAL', String) do |v|
+          params.ylim = get_lim(v)
+        end
+
+      parsers[:scatter] = \
+        parsers[:s]
+        .on('--canvas VAL', String) do |v|
+          params.canvas = v
+        end
+        .on('--xlim VAL', String) do |v|
+          params.xlim = get_lim(v)
+        end
+        .on('--ylim VAL', String) do |v|
+          params.ylim = get_lim(v)
+        end
+
+      parsers[:density] = \
+        parsers[:d]
+        .on('--grid', TrueClass) do |v|
+          params.grid = v
+        end
+        .on('--xlim VAL', String) do |v|
+          params.xlim = get_lim(v)
+        end
+        .on('--ylim VAL', String) do |v|
+          params.ylim = get_lim(v)
+        end
+
+      parsers[:boxplot] = \
+        parsers[:box]
+        .on('--xlim VAL', String) do |v|
+          params.xlim = get_lim(v)
+        end
+
+      # Preventing the generation of new sub-commands
+      parsers.default = nil
+
+      # Usage and help messages
+      main_parser.banner = \
+        <<~MSG
+          Program: uplot (Tools for plotting on the terminal)
+          Version: #{Uplot::VERSION} (using unicode_plot #{UnicodePlot::VERSION})
+
+          Usage:   uplot <command> [options]
+
+          Command: #{parsers.keys.join(' ')}
+
+          Options:
+        MSG
+
+      begin
+        main_parser.order!(argv)
+      rescue OptionParser::ParseError => e
+        warn "uplot: #{e.message}"
+        exit 1
+      end
+
+      @plot_type = argv.shift&.to_sym
+
+      unless parsers.has_key?(plot_type)
+        if plot_type.nil?
+          warn main_parser.help
+        else
+          warn "uplot: unrecognized command '#{plot_type}'"
+        end
+        exit 1
+      end
+      parser = parsers[plot_type]
+
+      begin
+        parser.parse!(argv) unless argv.empty?
+      rescue OptionParser::ParseError => e
+        warn "uplot: #{e.message}"
+        exit 1
+      end
+    end
+
+    def get_lim(str)
+      str.split(/-|:|\.\./)[0..1].map(&:to_f)
+    end
+
+    def run
+      parse_options
+      # Sometimes the input file does not end with a newline code.
+      while input = Kernel.gets(nil)
+        input.freeze
+        @raw_inputs << input
+        @data = Preprocessing.input(input, @delimiter, @headers, @transpose)
+        pp @data if @debug
+        case plot_type
+        when :bar, :barplot
+          Plot.barplot(data, params, @count)
+        when :count, :c
+          Plot.barplot(data, params, count = true)
+        when :hist, :histogram
+          Plot.histogram(data, params)
+        when :line, :lineplot
+          Plot.line(data, params)
+        when :lines, :lineplots
+          Plot.lines(data, params, fmt)
+        when :scatter, :s
+          Plot.scatter(data, params, fmt)
+        when :density, :d
+          Plot.density(data, params, fmt)
+        when :box, :boxplot
+          Plot.boxplot(data, params)
+        else
+          raise "unrecognized plot_type: #{plot_type}"
+        end.render($stderr)
+
+        print input if @output
+      end
+    end
+  end
+end

lib/uplot/plot.rb

@@ -0,0 +1,145 @@
+require 'unicode_plot'
+
+module Uplot
+  # plotting functions.
+  module Plot
+    module_function
+
+    def barplot(data, params, count = false)
+      headers = data.headers
+      series = data.series
+      if count
+        series = Preprocessing.count(series[0])
+        params.title = headers[0] if headers
+      end
+      params.title ||= headers[1] if headers
+      labels = series[0]
+      values = series[1].map(&:to_f)
+      UnicodePlot.barplot(labels, values, **params.to_hc)
+    end
+
+    def histogram(data, params)
+      headers = data.headers
+      series = data.series
+      params.title ||= data.headers[0] if headers
+      values = series[0].map(&:to_f)
+      UnicodePlot.histogram(values, **params.to_hc)
+    end
+
+    def line(data, params)
+      headers = data.headers
+      series = data.series
+      if series.size == 1
+        # If there is only one series, it is assumed to be sequential data.
+        params.ylabel ||= headers[0] if headers
+        y = series[0].map(&:to_f)
+        UnicodePlot.lineplot(y, **params.to_hc)
+      else
+        # If there are 2 or more series,
+        # assume that the first 2 series are the x and y series respectively.
+        if headers
+          params.xlabel ||= headers[0]
+          params.ylabel ||= headers[1]
+        end
+        x = series[0].map(&:to_f)
+        y = series[1].map(&:to_f)
+        UnicodePlot.lineplot(x, y, **params.to_hc)
+      end
+    end
+
+    def get_method2(method1)
+      (method1.to_s + '!').to_sym
+    end
+
+    def xyy_plot(data, method1, params)
+      headers = data.headers
+      series = data.series
+      method2 = get_method2(method1)
+      series.map! { |s| s.map(&:to_f) }
+      if headers
+        params.name   ||= headers[1]
+        params.xlabel ||= headers[0]
+      end
+      params.ylim ||= series[1..-1].flatten.minmax # why need?
+      plot = UnicodePlot.public_send(method1, series[0], series[1], **params.to_hc)
+      2.upto(series.size - 1) do |i|
+        UnicodePlot.public_send(method2, plot, series[0], series[i], name: headers&.[](i))
+      end
+      plot
+    end
+
+    def xyxy_plot(data, method1, params)
+      headers = data.headers
+      series = data.series
+      method2 = get_method2(method1)
+      series.map! { |s| s.map(&:to_f) }
+      series = series.each_slice(2).to_a
+      params.name ||= headers[0] if headers
+      params.xlim = series.map(&:first).flatten.minmax # why need?
+      params.ylim = series.map(&:last).flatten.minmax  # why need?
+      x1, y1 = series.shift
+      plot = UnicodePlot.public_send(method1, x1, y1, **params.to_hc)
+      series.each_with_index do |(xi, yi), i|
+        UnicodePlot.public_send(method2, plot, xi, yi, name: headers&.[]((i + 1) * 2))
+      end
+      plot
+    end
+
+    def lines(data, params, fmt = 'xyy')
+      check_series_size(data, fmt)
+      case fmt
+      when 'xyy'
+        xyy_plot(data, :lineplot, params)
+      when 'xyxy'
+        xyxy_plot(data, :lineplot, params)
+      end
+    end
+
+    def scatter(data, params, fmt = 'xyy')
+      check_series_size(data, fmt)
+      case fmt
+      when 'xyy'
+        xyy_plot(data, :scatterplot, params)
+      when 'xyxy'
+        xyxy_plot(data, :scatterplot, params)
+      end
+    end
+
+    def density(data, params, fmt = 'xyy')
+      check_series_size(data, fmt)
+      case fmt
+      when 'xyy'
+        xyy_plot(data, :densityplot, params)
+      when 'xyxy'
+        xyxy_plot(data, :densityplot, params)
+      end
+    end
+
+    def boxplot(data, params)
+      headers = data.headers
+      series = data.series
+      headers ||= (1..series.size).map(&:to_s)
+      series.map! { |s| s.map(&:to_f) }
+      UnicodePlot.boxplot(headers, series, **params.to_hc)
+    end
+
+    def check_series_size(data, fmt)
+      series = data.series
+      if series.size == 1
+        warn 'uplot: There is only one series of input data. Please check the delimiter.'
+        warn ''
+        warn "  Headers: \e[35m#{data.headers.inspect}\e[0m"
+        warn "  The first item is: \e[35m\"#{series[0][0]}\"\e[0m"
+        warn "  The last item is : \e[35m\"#{series[0][-1]}\"\e[0m"
+        exit 1
+      end
+      if fmt == 'xyxy' && series.size.odd?
+        warn 'uplot: In the xyxy format, the number of series must be even.'
+        warn ''
+        warn "  Number of series: \e[35m#{series.size}\e[0m"
+        warn "  Headers: \e[35m#{data.headers.inspect}\e[0m"
+        exit 1
+      end
+    end
+  end
+end

lib/uplot/preprocessing.rb

@@ -0,0 +1,67 @@
+require 'csv'
+
+module Uplot
+  module Preprocessing
+    module_function
+
+    def input(input, delimiter, headers, transpose)
+      arr = read_csv(input, delimiter)
+      headers = get_headers(arr, headers, transpose)
+      series = get_series(arr, headers, transpose)
+      Data.new(headers, series)
+    end
+
+    def read_csv(input, delimiter)
+      CSV.parse(input, col_sep: delimiter)
+         .delete_if do |i|
+           i == [] or i.all? nil
+         end
+    end
+
+    # Transpose different sized ruby arrays
+    # https://stackoverflow.com/q/26016632
+    def transpose2(arr)
+      Array.new(arr.map(&:length).max) { |i| arr.map { |e| e[i] } }
+    end
+
+    def get_headers(arr, headers, transpose)
+      if headers
+        if transpose
+          arr.map(&:first)
+        else
+          arr[0]
+        end
+      end
+    end
+
+    def get_series(arr, headers, transpose)
+      if transpose
+        if headers
+          arr.map { |row| row[1..-1] }
+        else
+          arr
+        end
+      else
+        if headers
+          transpose2(arr[1..-1])
+        else
+          transpose2(arr)
+        end
+      end
+    end
+
+    def count(arr)
+      # tally was added in Ruby 2.7
+      if Enumerable.method_defined? :tally
+        arr.tally
+      else
+        # https://github.com/marcandre/backports
+        arr.each_with_object(Hash.new(0)) { |item, res| res[item] += 1 }
+           .tap { |h| h.default = nil }
+      end
+        .sort { |a, b| a[1] <=> b[1] }
+        .reverse
+        .transpose
+    end
+  end
+end

lib/uplot/version.rb

@@ -1,3 +1,3 @@
 module Uplot
-  VERSION = '0.1.0'.freeze
+  VERSION = '0.2.1'.freeze
 end

test/fixtures/iris.csv

@@ -0,0 +1,152 @@
+sepal_length,sepal_width,petal_length,petal_width,species
+5.1,3.5,1.4,0.2,Iris-setosa
+4.9,3.0,1.4,0.2,Iris-setosa
+4.7,3.2,1.3,0.2,Iris-setosa
+4.6,3.1,1.5,0.2,Iris-setosa
+5.0,3.6,1.4,0.2,Iris-setosa
+5.4,3.9,1.7,0.4,Iris-setosa
+4.6,3.4,1.4,0.3,Iris-setosa
+5.0,3.4,1.5,0.2,Iris-setosa
+4.4,2.9,1.4,0.2,Iris-setosa
+4.9,3.1,1.5,0.1,Iris-setosa
+5.4,3.7,1.5,0.2,Iris-setosa
+4.8,3.4,1.6,0.2,Iris-setosa
+4.8,3.0,1.4,0.1,Iris-setosa
+4.3,3.0,1.1,0.1,Iris-setosa
+5.8,4.0,1.2,0.2,Iris-setosa
+5.7,4.4,1.5,0.4,Iris-setosa
+5.4,3.9,1.3,0.4,Iris-setosa
+5.1,3.5,1.4,0.3,Iris-setosa
+5.7,3.8,1.7,0.3,Iris-setosa
+5.1,3.8,1.5,0.3,Iris-setosa
+5.4,3.4,1.7,0.2,Iris-setosa
+5.1,3.7,1.5,0.4,Iris-setosa
+4.6,3.6,1.0,0.2,Iris-setosa
+5.1,3.3,1.7,0.5,Iris-setosa
+4.8,3.4,1.9,0.2,Iris-setosa
+5.0,3.0,1.6,0.2,Iris-setosa
+5.0,3.4,1.6,0.4,Iris-setosa
+5.2,3.5,1.5,0.2,Iris-setosa
+5.2,3.4,1.4,0.2,Iris-setosa
+4.7,3.2,1.6,0.2,Iris-setosa
+4.8,3.1,1.6,0.2,Iris-setosa
+5.4,3.4,1.5,0.4,Iris-setosa
+5.2,4.1,1.5,0.1,Iris-setosa
+5.5,4.2,1.4,0.2,Iris-setosa
+4.9,3.1,1.5,0.1,Iris-setosa
+5.0,3.2,1.2,0.2,Iris-setosa
+5.5,3.5,1.3,0.2,Iris-setosa
+4.9,3.1,1.5,0.1,Iris-setosa
+4.4,3.0,1.3,0.2,Iris-setosa
+5.1,3.4,1.5,0.2,Iris-setosa
+5.0,3.5,1.3,0.3,Iris-setosa
+4.5,2.3,1.3,0.3,Iris-setosa
+4.4,3.2,1.3,0.2,Iris-setosa
+5.0,3.5,1.6,0.6,Iris-setosa
+5.1,3.8,1.9,0.4,Iris-setosa
+4.8,3.0,1.4,0.3,Iris-setosa
+5.1,3.8,1.6,0.2,Iris-setosa
+4.6,3.2,1.4,0.2,Iris-setosa
+5.3,3.7,1.5,0.2,Iris-setosa
+5.0,3.3,1.4,0.2,Iris-setosa
+7.0,3.2,4.7,1.4,Iris-versicolor
+6.4,3.2,4.5,1.5,Iris-versicolor
+6.9,3.1,4.9,1.5,Iris-versicolor
+5.5,2.3,4.0,1.3,Iris-versicolor
+6.5,2.8,4.6,1.5,Iris-versicolor
+5.7,2.8,4.5,1.3,Iris-versicolor
+6.3,3.3,4.7,1.6,Iris-versicolor
+4.9,2.4,3.3,1.0,Iris-versicolor
+6.6,2.9,4.6,1.3,Iris-versicolor
+5.2,2.7,3.9,1.4,Iris-versicolor
+5.0,2.0,3.5,1.0,Iris-versicolor
+5.9,3.0,4.2,1.5,Iris-versicolor
+6.0,2.2,4.0,1.0,Iris-versicolor
+6.1,2.9,4.7,1.4,Iris-versicolor
+5.6,2.9,3.6,1.3,Iris-versicolor
+6.7,3.1,4.4,1.4,Iris-versicolor
+5.6,3.0,4.5,1.5,Iris-versicolor
+5.8,2.7,4.1,1.0,Iris-versicolor
+6.2,2.2,4.5,1.5,Iris-versicolor
+5.6,2.5,3.9,1.1,Iris-versicolor
+5.9,3.2,4.8,1.8,Iris-versicolor
+6.1,2.8,4.0,1.3,Iris-versicolor
+6.3,2.5,4.9,1.5,Iris-versicolor
+6.1,2.8,4.7,1.2,Iris-versicolor
+6.4,2.9,4.3,1.3,Iris-versicolor
+6.6,3.0,4.4,1.4,Iris-versicolor
+6.8,2.8,4.8,1.4,Iris-versicolor
+6.7,3.0,5.0,1.7,Iris-versicolor
+6.0,2.9,4.5,1.5,Iris-versicolor
+5.7,2.6,3.5,1.0,Iris-versicolor
+5.5,2.4,3.8,1.1,Iris-versicolor
+5.5,2.4,3.7,1.0,Iris-versicolor
+5.8,2.7,3.9,1.2,Iris-versicolor
+6.0,2.7,5.1,1.6,Iris-versicolor
+5.4,3.0,4.5,1.5,Iris-versicolor
+6.0,3.4,4.5,1.6,Iris-versicolor
+6.7,3.1,4.7,1.5,Iris-versicolor
+6.3,2.3,4.4,1.3,Iris-versicolor
+5.6,3.0,4.1,1.3,Iris-versicolor
+5.5,2.5,4.0,1.3,Iris-versicolor
+5.5,2.6,4.4,1.2,Iris-versicolor
+6.1,3.0,4.6,1.4,Iris-versicolor
+5.8,2.6,4.0,1.2,Iris-versicolor
+5.0,2.3,3.3,1.0,Iris-versicolor
+5.6,2.7,4.2,1.3,Iris-versicolor
+5.7,3.0,4.2,1.2,Iris-versicolor
+5.7,2.9,4.2,1.3,Iris-versicolor
+6.2,2.9,4.3,1.3,Iris-versicolor
+5.1,2.5,3.0,1.1,Iris-versicolor
+5.7,2.8,4.1,1.3,Iris-versicolor
+6.3,3.3,6.0,2.5,Iris-virginica
+5.8,2.7,5.1,1.9,Iris-virginica
+7.1,3.0,5.9,2.1,Iris-virginica
+6.3,2.9,5.6,1.8,Iris-virginica
+6.5,3.0,5.8,2.2,Iris-virginica
+7.6,3.0,6.6,2.1,Iris-virginica
+4.9,2.5,4.5,1.7,Iris-virginica
+7.3,2.9,6.3,1.8,Iris-virginica
+6.7,2.5,5.8,1.8,Iris-virginica
+7.2,3.6,6.1,2.5,Iris-virginica
+6.5,3.2,5.1,2.0,Iris-virginica
+6.4,2.7,5.3,1.9,Iris-virginica
+6.8,3.0,5.5,2.1,Iris-virginica
+5.7,2.5,5.0,2.0,Iris-virginica
+5.8,2.8,5.1,2.4,Iris-virginica
+6.4,3.2,5.3,2.3,Iris-virginica
+6.5,3.0,5.5,1.8,Iris-virginica
+7.7,3.8,6.7,2.2,Iris-virginica
+7.7,2.6,6.9,2.3,Iris-virginica
+6.0,2.2,5.0,1.5,Iris-virginica
+6.9,3.2,5.7,2.3,Iris-virginica
+5.6,2.8,4.9,2.0,Iris-virginica
+7.7,2.8,6.7,2.0,Iris-virginica
+6.3,2.7,4.9,1.8,Iris-virginica
+6.7,3.3,5.7,2.1,Iris-virginica
+7.2,3.2,6.0,1.8,Iris-virginica
+6.2,2.8,4.8,1.8,Iris-virginica
+6.1,3.0,4.9,1.8,Iris-virginica
+6.4,2.8,5.6,2.1,Iris-virginica
+7.2,3.0,5.8,1.6,Iris-virginica
+7.4,2.8,6.1,1.9,Iris-virginica
+7.9,3.8,6.4,2.0,Iris-virginica
+6.4,2.8,5.6,2.2,Iris-virginica
+6.3,2.8,5.1,1.5,Iris-virginica
+6.1,2.6,5.6,1.4,Iris-virginica
+7.7,3.0,6.1,2.3,Iris-virginica
+6.3,3.4,5.6,2.4,Iris-virginica
+6.4,3.1,5.5,1.8,Iris-virginica
+6.0,3.0,4.8,1.8,Iris-virginica
+6.9,3.1,5.4,2.1,Iris-virginica
+6.7,3.1,5.6,2.4,Iris-virginica
+6.9,3.1,5.1,2.3,Iris-virginica
+5.8,2.7,5.1,1.9,Iris-virginica
+6.8,3.2,5.9,2.3,Iris-virginica
+6.7,3.3,5.7,2.5,Iris-virginica
+6.7,3.0,5.2,2.3,Iris-virginica
+6.3,2.5,5.0,1.9,Iris-virginica
+6.5,3.0,5.2,2.0,Iris-virginica
+6.2,3.4,5.4,2.3,Iris-virginica
+5.9,3.0,5.1,1.8,Iris-virginica
+

uplot.gemspec

@@ -23,5 +23,6 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'unicode_plot'
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'
+  spec.add_development_dependency 'rubocop'
   spec.add_development_dependency 'test-unit'
 end