QtObject {
        id: __private

        /**
          * @brief initialised cell, if cell has chartView and configurationProxy
          */
        function initIfCan() {
            if (!itemRoot.chartView || !itemRoot.configurationProxy || !_yAxis) return
            var oldSeries = chartView.series(itemRoot.seriesName)
            if (oldSeries) chartView.removeSeries(oldSeries)
            var series = chartView.createSeries(ChartView.SeriesTypeLine,
                                                               seriesName,
                                                               chartView.xAxis,
                                                               yAxis)
            for (var i = 0; i < 1000; ++i)
            {
                series.append(i/5, Math.sin(i/5)/2 + 0.5)
            }
            itemRoot.configurationProxy.registerSeriesAtIndex(series, channelIndex)

            lineSeries = series

        }

        property LineSeries lineSeries

        property ValueAxis _yAxis: ValueAxis {
            id: yAxis
            min: itemRoot.fromYValue
            max: itemRoot.toYValue
            gridVisible: false
        }