4、使用Ruby创建图形和桌面报告

vim8coder

于 2025-11-14 14:53:01 发布

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分类专栏： Ruby报告艺术：数据可视化实战文章标签： Ruby Gruff 图形创建

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使用Ruby创建图形和桌面报告

1. 使用Gruff创建图形

1.1 柱状图代码解析

以下是创建每个玩家柱状图的代码：

Player.find(:all).each do |player|
  bar_chart = Gruff::Bar.new(1024)
  bar_chart.legend_font_size = 12
  total_games = Play.count(:conditions=>['game_id = ? ' <<
    'AND player_id = ?', 
    game_id_to_analyze, 
    player.id]).to_f
  total_wins = Play.count(:conditions=>['game_id = ? ' << 
    'AND player_id = ? ' << 
    'AND won=1', 
    game_id_to_analyze, 
    player.id]).to_f
  win_ratio = (total_wins / total_games * 100).to_i unless total_games == 0
  win_ratio ||= 0
  bar_chart.title = "#{player.name} " <<
    "(#{win_ratio}% won)"
  bar_chart.minimum_value = 0
  bar_chart.maximum_value = 110
  sql = "SELECT event