b4ed14f4f7
This will leave out the student that never attempt the question and fixes the error with histogram rendering.
37 lines
872 B
CoffeeScript
37 lines
872 B
CoffeeScript
class @Histogram
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constructor: (@id, @rawData) ->
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@xTicks = []
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@yTicks = []
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@data = []
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@calculate()
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@render()
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calculate: ->
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for [score, count] in @rawData
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continue if score == null
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log_count = Math.log(count + 1)
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@data.push [score, log_count]
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@xTicks.push [score, score.toString()]
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@yTicks.push [log_count, count.toString()]
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render: ->
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$.plot $("#histogram_#{@id}"), [
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data: @data
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bars:
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show: true
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align: 'center'
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lineWidth: 0
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fill: 1.0
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color: "#b72121"
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],
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xaxis:
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min: -1
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max: Math.max.apply Math, $.map(@xTicks, (data) -> data[0] + 1)
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ticks: @xTicks
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tickLength: 0
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yaxis:
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min: 0.0
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max: Math.max.apply Math, $.map(@yTicks, (data) -> data[0] * 1.1)
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ticks: @yTicks
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labelWidth: 50
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