Question

I want to create XY plot with positive and negative numbers on both axys. By default achartnegine shows negative values of series but the start popint is always zero^ graph start from zero and next nubmer is something like -50, -40 etc. I have tried to avoid this but haven;t succed yet. Could you please suggest the right approach?

                XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
            dataset.addSeries(seriesXY);

            XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
            //renderer.setXAxisMin(-10f);
            //renderer.setYAxisMin(-250f);
            //renderer.setBarSpacing(SPACING);
            //renderer.setRange(new double[] { -250d, 250d});
            XYSeriesRenderer sRenderer = new XYSeriesRenderer();
            sRenderer.setColor(Color.BLUE);
            sRenderer.setFillBelowLine(false);
            sRenderer.setChartValuesSpacing(SPACING);
            sRenderer.setFillBelowLineColor(Color.WHITE);
            sRenderer.setFillPoints(false);

            renderer.addSeriesRenderer(sRenderer);
            renderer.setApplyBackgroundColor(true);
            renderer.setBackgroundColor(Color.WHITE);
            renderer.setMarginsColor(Color.WHITE);
            renderer.setAxesColor(Color.BLACK);
            renderer.setXLabelsColor(Color.BLUE);
            renderer.setYLabelsColor(0, Color.BLUE);
            renderer.setXLabelsAlign(Align.RIGHT);
            renderer.setYLabelsAlign(Align.RIGHT);

        GraphicalView chartView = ChartFactory.getLineChartView(
                getActivity(),
                dataset, renderer);
        plot.removeAllViews();
        plot.addView(chartView, new LayoutParams(
                LayoutParams.MATCH_PARENT, 200));

        chartView.repaint();

I use LineChartView

Answer 1

The answer is that you cannot put the axis in the center of the chart with AChartEngine as it is out of the box.