private void drawSample()

in src/components/src/main/java/org/apache/jmeter/visualizers/RespTimeGraphChart.java [280:370]
77 lines of code
14 McCabe index (conditional complexity)

    private void drawSample(String _title, String[] _xAxisLabels,
            String _yAxisTitle, String[] _legendLabels,
            double[][] _data, int _width, int _height, int _incrScaleYAxis,
            Color[] _color, Font legendFont, Graphics g) {

        double max = maxYAxisScale > 0 ? maxYAxisScale : getTopValue(findMax(_data), RoundingMode.UP); // define max scale y axis
        try {
            // if the title graph is empty, we can assume some default
            if (_title.length() == 0 ) {
                _title = JMeterUtils.getResString("graph_resp_time_title"); //$NON-NLS-1$
            }
            this.setPreferredSize(new Dimension(_width,_height));
            DataSeries dataSeries = new DataSeries( _xAxisLabels, null, _yAxisTitle, _title ); // replace _xAxisTitle to null (don't display x axis title)

            // Stroke and shape line settings
            Stroke[] strokes = new Stroke[_legendLabels.length];
            for (int i = 0; i < _legendLabels.length; i++) {
                strokes[i] = new BasicStroke(strokeWidth, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 5f);
            }
            Shape[] shapes = new Shape[_legendLabels.length];
            for (int i = 0; i < _legendLabels.length; i++) {
                shapes[i] = pointShape;
            }
            LineChartProperties lineChartProperties= new LineChartProperties(strokes, shapes);

            // Lines colors
            Paint[] paints = new Paint[_color.length];
            System.arraycopy(_color, 0, paints, 0, _color.length);

            // Define chart type (line)
            AxisChartDataSet axisChartDataSet =
                new AxisChartDataSet( _data, _legendLabels, paints, ChartType.LINE, lineChartProperties );
            dataSeries.addIAxisPlotDataSet(axisChartDataSet);

            ChartProperties chartProperties= new ChartProperties();
            LabelAxisProperties xaxis = new LabelAxisProperties();
            DataAxisProperties yaxis = new DataAxisProperties();
            yaxis.setUseCommas(showGrouping);

            if (legendFont != null) {
                yaxis.setAxisTitleChartFont(new ChartFont(legendFont, new Color(20)));
                yaxis.setScaleChartFont(new ChartFont(legendFont, new Color(20)));
                xaxis.setAxisTitleChartFont(new ChartFont(legendFont, new Color(20)));
                xaxis.setScaleChartFont(new ChartFont(legendFont, new Color(20)));
            }
            if (titleFont != null) {
                chartProperties.setTitleFont(new ChartFont(titleFont, new Color(0)));
            }

            // Y Axis ruler
            try {
                double numInterval = _height / 50d; // ~a tic every 50 px
                double incrYAxis = max / numInterval;
                double incrTopValue = _incrScaleYAxis;
                if (_incrScaleYAxis == 0) {
                    incrTopValue = getTopValue(incrYAxis, RoundingMode.HALF_UP);
                }
                if (incrTopValue < 1) {
                    incrTopValue = 1.0d; // Increment cannot be < 1
                }
                yaxis.setUserDefinedScale(0, incrTopValue);
                yaxis.setNumItems((int)(max / incrTopValue) + 1);
                yaxis.setShowGridLines(1);
            } catch (PropertyException e) {
                log.warn("Exception while setting Y axis properties.", e);
            }

            AxisProperties axisProperties= new AxisProperties(xaxis, yaxis);
            axisProperties.setXAxisLabelsAreVertical(true);
            LegendProperties legendProperties= new LegendProperties();
            legendProperties.setBorderStroke(null);
            legendProperties.setPlacement(legendPlacement);
            legendProperties.setIconBorderPaint(Color.WHITE);
            legendProperties.setIconBorderStroke(new BasicStroke(0f, BasicStroke.CAP_SQUARE, BasicStroke.CAP_SQUARE));
            // Manage legend placement
            legendProperties.setNumColumns(LegendAreaProperties.COLUMNS_FIT_TO_IMAGE);
            if (legendPlacement == LegendAreaProperties.RIGHT || legendPlacement == LegendAreaProperties.LEFT) {
                legendProperties.setNumColumns(1);
            }
            if (legendFont != null) {
                legendProperties.setFont(legendFont);
            }
            AxisChart axisChart = new AxisChart(
                    dataSeries, chartProperties, axisProperties,
                    legendProperties, _width, _height );
            axisChart.setGraphics2D((Graphics2D) g);
            axisChart.render();
        } catch (ChartDataException | PropertyException e) {
            log.warn("Exception while rendering axis chart.", e);
        }
    }