javascript - 图表 - 在单个 html 页面中处理多个图表

Question

我有一个针对单个图表实现的显示，我想扩展解决方案，以便 3 个图表具有相同的属性。

具体来说:

1. 我想启用选择缩放+双击重置显示

2. 我希望系列的图例是可点击的，这样系列就会在每次点击时打开/关闭。我能够基于 previous posts 成功地实现它们

Here's a fiddle with 3 chart in a single page

这是我的原始代码(用 coffeescript 编写):

colorArray = []
colorArray.push "rgba(180, 0, 75,    0.6)"
colorArray.push "rgba(0, 150, 100,   0.6)"
colorArray.push "rgba(0, 0, 255,     0.6)"
colorArray.push "rgba(140, 0, 255,   0.6)"
colorArray.push "rgba(90, 180, 20,   0.6)"
colorArray.push "rgba(255, 236, 0,   0.6)"
colorArray.push "rgba(234, 170, 21,  0.6)"
colorArray.push "rgba(95, 180, 190,  0.6)"
colorArray.push "rgba(214, 92, 63,   0.6)"
colorArray.push "rgba(218, 106, 234, 0.6)"
colorArray.push "rgba(213, 128, 155, 0.6)"

# chart colors default 
$chrt_border_color = "#efefef"
$chrt_grid_color = "#DDD"
$chrt_main = "#E24913"

# red       
$chrt_second = "#6595b4"
# blue      
$chrt_third = "#FF9F01"
# orange    
$chrt_fourth = "#7e9d3a"
# green     
$chrt_fifth = "#BD362F"
# dark red  
$chrt_mono = "#000"

Chart = 

    generateDataObjects: (all_series, all_series_data) ->
        plotData = []

        for series, i in all_series
            obj =
                label: series.replace /__/g, "|"
                data: all_series_data[i]
                color: colorArray[i]

            # obj = (
            #   label: series
            #   console.log "pushing series #{series}"
            #   data: all_series_data[i]
            #   color: colorArray[i]
            #   console.log "pushing color #{color} to #{series} series"
            #   )
            plotData.push obj

        return plotData

    togglePlot: (seriesIdx) ->
        console.log "seriesIdx is: #{seriesIdx}"
        someData = this.plot.getData()
        someData[seriesIdx-2].lines.show = not someData[seriesIdx-2].lines.show
        someData[seriesIdx-2].points.show = not someData[seriesIdx-2].points.show
        this.plot.setData someData
        this.plot.draw()
        return

    getTooltip: (label, xval, yval, flotItem) ->
        return '<span class="label bg-color-teal txt-color-white">'+label+'</span>'+'<br>Build: <span>'+ flotItem.series.data[flotItem.dataIndex][2]+'</span>' +"<br>Run ID: <strong> #{flotItem.series.data[flotItem.dataIndex][3].toString()}</strong>" + '<br>Result: <span>'+Chart.commify(yval)+'</span>'

    commify: (x) ->
        return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");

    generateChartOptions: (legend_container, ticks) ->
        this.legendindex = 0
        return (
            series:
                lines:
                    show: true

                points:
                    show: true

            crosshair:
                mode: "x"
                color: "#FF9900"

            legend:
                container: $("##{legend_container}")
                labelFormatter: (label, series) ->
                    "<a href=\"javascript:void(0);\" class=\"legendtoggle\" data-index=\"" + Chart.legendindex++ + "\">" + label + "</a>"
                # labelFormatter: (label, series) ->
    #                   "<a href=\"javascript:void(0);\" onClick=\"Chart.togglePlot(" + series.idx + "); return false;\">" + label + "</a>"
                noColumns: 4
                # hideable: true

            grid:
              hoverable: true
              clickable: true
              tickColor: $chrt_border_color
              borderWidth: 0
              borderColor: $chrt_border_color

            tooltip: true
            tooltipOpts: 
              content : Chart.getTooltip 
              #content : "Value <b>$x</b> Value <span>$y</span>",
              defaultTheme: false

            xaxis:
                ticks: ticks
                rotateTicks: 30

            selection:
                mode: "xy"
            )

jQuery ->
    if $("#normalized_bw_chart").length         # render only if the chart-id is present

        raw_data = $("#normalized_bw_chart").data('results')
        ticks = $("#normalized_bw_chart").data('ticks')
        all_series = $("#normalized_bw_chart").data('series')

        Chart.plot = $.plot($("#normalized_bw_chart"), Chart.generateDataObjects(all_series, raw_data), Chart.generateChartOptions('normalized_bw_legend', ticks))  

    if $("#concurrent_flows_chart").length      # render only if the chart-id is present

        raw_data = $("#concurrent_flows_chart").data('results')
        ticks = $("#concurrent_flows_chart").data('ticks')
        all_series = $("#concurrent_flows_chart").data('series')

        Chart.plot = $.plot($("#concurrent_flows_chart"), Chart.generateDataObjects(all_series, raw_data), Chart.generateChartOptions('concurrent_flows_legend', ticks))

    if $("#bandwidth_chart").length         # render only if the chart-id is present

        raw_data = $("#bandwidth_chart").data('results')
        ticks = $("#bandwidth_chart").data('ticks')
        all_series = $("#bandwidth_chart").data('series')

        Chart.plot = $.plot($("#bandwidth_chart"), Chart.generateDataObjects(all_series, raw_data), Chart.generateChartOptions('bandwidth_legend', ticks))  

    $('body').on 'click', 'a.legendtoggle', (event) ->
        Chart.togglePlot($(this).data('index'))
        return false

    $("[data-behavior~=chart-selection]").bind "plotselected", (event, ranges) ->
        selected_chart = $(this).attr('id')[0...-6] # slicing the name of the selected item
        console.log  ("zooming in to " + selected_chart)
        plot = $.plot($("##{selected_chart}_chart"), plot.getData(), $.extend(true, {}, Chart.generateChartOptions(selected_chart+'_legend', ticks),
          xaxis:
            min: ranges.xaxis.from
            max: ranges.xaxis.to

          yaxis:
            min: ranges.yaxis.from
            max: ranges.yaxis.to
        ))
     return
    $("#normalized_bw_chart").bind "plotselected", (event, ranges) ->
        # ranges.xaxis.to = ranges.xaxis.from + 0.0005  if ranges.xaxis.to - ranges.xaxis.from < 0.0005
  #     ranges.yaxis.to = ranges.yaxis.from + 0.0005  if ranges.yaxis.to - ranges.yaxis.from < 0.0005
        plot = $.plot($("#normalized_bw_chart"), plot.getData(), $.extend(true, {}, Chart.generateChartOptions('normalized_bw_legend', ticks),
          xaxis:
            min: ranges.xaxis.from
            max: ranges.xaxis.to

          yaxis:
            min: ranges.yaxis.from
            max: ranges.yaxis.to
        ))
        return


    $("[data-behavior~=chart-selection]").bind "dblclick", (event, pos, item) ->
        selected_chart = $(this).attr('id')[0...-6] # slicing the name of the selected item
        console.log  ("zooming out to " + selected_chart)
        plot = $.plot($("##{selected_chart}_chart"), plot.getData(), $.extend(true, {}, Chart.generateChartOptions(selected_chart+'_legend', ticks),
          xaxis:
            min: null
            max: null

          yaxis:
            min: null
            max: null
        ))
     return

    $("#normalized_bw_chart").bind "dblclick", (event, pos, item) ->
        plot = $.plot($("#normalized_bw_chart"), plot.getData(), $.extend(true, {}, Chart.generateChartOptions('normalized_bw_legend', ticks),
          xaxis:
            min: null
            max: null

          yaxis:
            min: null
            max: null
        ))
        return

什么是最有效的实现方式(同时尽量避免代码重复)？

谢谢!!

Answer 1

创建一个图表数组

plotNames = ["bandwidth", "normalized_bw", "concurrent_flows"]

扩展您的 togglePlot 函数以处理一个绘图

togglePlot: (plotName, seriesIdx) ->
    someData = this.plot[plotName].getData()
    someData[seriesIdx].points.show = not someData[seriesIdx].points.show
    this.plot[plotName].setData someData
    this.plot[plotName].draw()
    return

并使用 jQuery each 函数创建不同的图并绑定(bind)它们的事件

jQuery.each plotNames, (index, name) ->
    if $("#"+name+"_chart").length
        Chart.plot[name] = $.plot($("#"+name+"_chart"), Chart.generateDataObjects(all_series, raw_data), Chart.generateChartOptions(name+"_legend"))

        $("#"+name+"_legend").on 'click', 'a.legendtoggle', (event) ->
            Chart.togglePlot(name, $(this).data('index'))
            return false

        $("#"+name+"_chart").bind "plotselected", (event, ranges) ->
            Chart.plot[name] = $.plot($("#"+name+"_chart"), Chart.plot[name].getData(), $.extend(true, {}, Chart.generateChartOptions(name+'_legend'),
              xaxis:
                min: ranges.xaxis.from
                max: ranges.xaxis.to
              yaxis:
                min: ranges.yaxis.from
                max: ranges.yaxis.to
            ))
            return

        $("#"+name+"_chart").bind "dblclick", (event, pos, item) ->
            Chart.plot[name] = $.plot($("#"+name+"_chart"), Chart.plot[name].getData(), $.extend(true, {}, Chart.generateChartOptions(name+'_legend'),
              xaxis:
                min: null
                max: null
              yaxis:
                min: null
                max: null
            ))
            return

查看此 fiddle获取完整代码。