我有一些包含 CSV 文件的代码。我正在尝试使用此信息在 Ruby 中使用rChart创建图表。
在我的代码中,我将 CSV 文件加载到如下哈希中:
CSV.new(open(url),:headers => true, :header_converters => :symbol, :converters => :all).each do |line|
title = line.headers[0]
points[line.fields[0]] = Hash[line.headers[1..-1].zip(line.fields[1..-1])]
end
之后...
points.keys.sort.each do |key|
puts "---" # added for clarification in SO example of each key
points[key].each {|serie_name, point| puts "#{serie_name} = #{point}"}
puts points[key].length # total number of series
end
输出:
---
wmt_oracle = 68
irt_oracle = 44
wmt_sql = 20
irt_sql = 11
operations = 4
5
---
wmt_oracle = 23
irt_oracle = 44
wmt_sql = 160
irt_sql = 8
operations = 3
5
---
wmt_oracle = 66
irt_oracle = 224
wmt_sql = 48
irt_sql = 15
operations = 3
5
在 rChart 中,堆积条形图的数据点按以下方式添加:
data.add_point([9,9,9,10,10,11,12,14,16,17,18,18,19,19,18,15,12,10,9],"Serie1");
data.add_point([10,11,11,12,12,13,14,15,17,19,22,24,23,23,22,20,18,16,14],"Serie2");
data.add_point([4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22],"Serie3");
. . .
对于上述数据,我需要让我的数据如下所示:
data.add_point([68,23,66],"wmt_oracle");
data.add_point([44,44,224], "irt_oracle")
data.add_point([20,160,48], "wmt_sql")
data.add_point([11,8,15], "irt_sql")
data.add_point([4,3,3], "operations")
它将是格式data.add_point(array_of_points, serie_name)
如何将哈希中的数据转换为这种格式?