X-Git-Url: https://projects.mako.cc/source/selectricity/blobdiff_plain/34c44145a77003ac4fcabd0b865f039bc24f97f4..cfe645440c51b66c088f19e84de650f026cf77f5:/app/controllers/graph_controller.rb?ds=sidebyside diff --git a/app/controllers/graph_controller.rb b/app/controllers/graph_controller.rb index ff29d8e..f6dc5d5 100644 --- a/app/controllers/graph_controller.rb +++ b/app/controllers/graph_controller.rb @@ -1,18 +1,44 @@ +# Selectricity: Voting Machinery for the Masses +# Copyright (C) 2007, 2008 Benjamin Mako Hill +# Copyright (C) 2007 Massachusetts Institute of Technology +# +# This program is free software. Please see the COPYING file for +# details. + require 'date' class GraphController < ApplicationController class GruffGraff - + + COLORS = ['#74CE00', '#005CD9', '#DC0D13', '#131313', '#A214A4', '#EFF80E', + '#90E5E6', '#F58313', '#437D3D', '#0E026C'] + BACKGROUND_COLORS = ['#74CE00', '#FFFFFF'] #for green and white background + def initialize(options) size = options[:size] ? options[:size] : "400x300" #allow custom sizing @graph = options[:graph_type].new(size) @graph.no_data_message = "No Voters" - @graph.theme = { :colors => ['#005CD9', '#DC0D13', '#131313', '#990033'], - :background_colors => ['#74CE00', '#FFFFFF'] } + @graph.theme = { :colors => COLORS, + :background_colors => ['#e5e5e5', '#FFFFFF'] } @graph.font = File.expand_path('/usr/X11R6/lib/X11/fonts/TTF/Vera.ttf', RAILS_ROOT) + if options[:legend_font_size] + @graph.legend_font_size = options[:legend_font_size] + end + + if options[:title_font_size] + @graph.title_font_size = options[:title_font_size] + end + + #marker count doesn't include minimum value line, default is 4 + @graph.marker_count = options[:marker_count] if options[:marker_count] + + @graph.marker_font_size = options[:marker_font_size] if options[:marker_font_size] + + @graph.marker_color = options[:marker_color] if options[:marker_color] + # fill in the data with the optional data name #Check to see if multiple datasets, if so, fill them all! #Sort by biggest first piece of data. @@ -27,6 +53,7 @@ class GraphController < ApplicationController end else #one dimensional array, just pass it in @graph.data( options.fetch(:data_name, "Data"), options[:data] ) + @graph.hide_legend = true end # set the labels or create an empty hash @@ -69,12 +96,19 @@ class GraphController < ApplicationController @election = Election.find(params[:id]) data, labels, scale = get_votes_per_interval_data(@election) + hide_legend = true + graph = GruffGraff.new( :graph_type => Gruff::Line, :data_name => @election.name, :data => data, :interval_labels => labels, :title => "Voters Over Time", - :size => "700x400", + :size => "330x232", + :legend_font_size => 40, + :title_font_size => 50, + :marker_count => 2, + :marker_font_size => 30, + :marker_color => '#999999', :x_axis_label => scale, :y_axis_label => "Number of Votes") send_data(*graph.output) @@ -85,13 +119,25 @@ class GraphController < ApplicationController @election.results unless @election.borda_result data, labels = get_borda_points(@election.borda_result) + size = "400x300" + size = "580x300" if @election.candidates.size >= 5 + + if @election.candidates.size >= 5 + marker_font_size = 17 + else + marker_font_size = 20 + end + graph = GruffGraff.new( :graph_type => Gruff::Bar, :data_name => @election.name, :data => data, :interval_labels => labels, + :size => size, :title => "Points Per Candidate", + :marker_color => '#999999', + :marker_font_size => marker_font_size, :y_axis_label => "Points", - :x_axis_label => "Candidate") + :x_axis_label => "Candidates") send_data(*graph.output) end #Acording to Tufte, small, concomparitive, highly labeled data sets usually @@ -132,9 +178,22 @@ class GraphController < ApplicationController @election.plurality_result.points.each do |candidate, votes| data[names[candidate]] = votes end - + size = "400x300" + size = "520x300" if @election.candidates.size >= 8 + + if @election.candidates.size >= 8 + marker_font_size = 20 + legend_font_size = 17 + else + marker_font_size = 17 + legend_font_size = 17 + end + pie = GruffGraff.new( :graph_type => Gruff::Pie, :title => "Percentage of First Place Votes", + :size => size, + :marker_font_size => marker_font_size, + :legend_font_size => legend_font_size, :data => data) send_data(*pie.output) @@ -258,15 +317,15 @@ class GraphController < ApplicationController # Create the hash for the labels. Each graph has ten columns, and three # will be labeled if timedelta < 2.hours #under two hours use minutes for labels - labels_hash[0] = starttime.min.to_s - labels_hash[(numcols/2)-1] = (starttime + (timedelta/2)).min.to_s - labels_hash[numcols-1] = Time.now.min.to_s - interval_type = "Minute of the Hour" + labels_hash[0] = "Start" + labels_hash[(numcols/2)-1] = fmt_decimal((timedelta/120)) #halfway + labels_hash[numcols-1] = fmt_decimal((timedelta/60)) + interval_type = "Minutes After Start" elsif timedelta < 2.days #more than 2 hours means use hours for labels - labels_hash[0] = starttime.hour.to_s - labels_hash[(numcols/2)-1] = (starttime + (timedelta/2)).hour.to_s - labels_hash[numcols-1] = Time.now.hour.to_s - interval_type = "Hour of the Day on 24 hour scale" + labels_hash[0] = "Start" + labels_hash[(numcols/2)-1] = fmt_decimal((timedelta/7200)) + labels_hash[numcols-1] = fmt_decimal((timedelta/3600)) + interval_type = "Hours After Start (Up to 48)" else #more than 2 days means use dates for labels labels_hash[0] = (Date.parse(starttime.to_s)).to_s labels_hash[(numcols/2)-1] = (Date.parse((starttime + (timedelta/2)).to_s)).to_s @@ -278,6 +337,10 @@ class GraphController < ApplicationController return total_per_interval, labels_hash, interval_type end + def fmt_decimal(number) + sprintf( "%0.1f", number) + end + def get_borda_points(result) points = Array.new labels = Hash.new @@ -306,5 +369,4 @@ class GraphController < ApplicationController end return preference_tally end - end