如何在没有
Ruby的科学记数法的情况下强制浮动显示所有重要位置/全精度？
目前我将BigDecimal转换为Float,BigDecimal(0.000000001453).to_f,但这会产生1.453e-09的结果浮点数.如果我做“？.12f”％BigDecimal(“0.000000001453”).to_f,我得到一个字符串.但是,在这种情况下,作为输出的字符串是不可接受的,因为我需要它作为没有科学记数法的实际数字浮点数.
—编辑—
好吧,让我在这里给出一些背景,这可能需要改变我原来的问题.
我正在尝试用Highstock& amp;创建一个图表. lazy_high_chart.今天早些时候,我能够绘制图形,当浮标向完全精度浮动发射到生成的js时显示科学记数法.因此我觉得问题在于这个问题.
但是在我到达这里的一些输入后,或许我需要对源进行进一步的审查,我的假设是错误的.我会让你决定：
@h = LazyHighCharts::HighChart.new('graph') do |f|
hours_of_readings = 1
reading_intervals = 1 #hour
readings_per_hour = 60
readings = ModelName.order("date DESC").select('data_readings.data2,data_readings.data1,data_readings.date').limit(hours_of_readings * readings_per_hour).all
data1_and_date_series = Array.new
data2_and_date_series = Array.new
dates = Array.new
# I have been thinking that the problem lies here in the "row.data1.to_f" and
# "row.data2.to_f" and thus this is the root of my initial question in terms
# of it emitting scientific notation to the js output in the format of:
# [[1.0e-09],[1.04e-09],[9.4e-09],... [3.68e-09]]
data1_and_date_series = readings.map{|row| [(row.date.to_i * 1000),(row.data1.to_f if BigDecimal(row.data1) != BigDecimal("-1000.0"))] }
data2_and_date_series = readings.map{|row| [(row.date.to_i * 1000),(row.data2.to_f if BigDecimal(row.data2) != BigDecimal("-1000.0"))] }
f.series(
:name => 'Data1',:data => data1_and_date_series,:pointStart => Time.now.to_i * 1000,:pointEnd => hours_of_readings.hours.ago.to_i * 1000,:pointInterval => reading_intervals.hour * 1000,:color => 'blue'
)
f.series(
:name => 'Data2)',:data => data2_and_date_series,:pointInterval => reading_intervals.hour.to_i * 1000,:color => 'red'
)
f.chart({:defaultSeriesType=>"spline" })
f.yAxis [
{:title => { :text => "Label 1",:margin => 10} },{:title => { :text => "Label 2 (groups)"},:opposite => true},{:max => 0},{:min => -0.000000001}
]
f.options[:xAxis] = {
:title => { :text => "Time"},:type => "datetime"
}
f.title(:text => "Title")
f.legend(:align => 'right',:verticalAlign => 'top',:y => 75,:x => -50,:layout => 'vertical') # override the default values
end