Examples with Axis lecho.lib.hellocharts.model.Axis used on opensource projects

Example 26 with Axis

use of lecho.lib.hellocharts.model.Axis in project xDrip-plus by jamorham.

the class LibreTrendGraph method setupCharts.

public void setupCharts() {
    final TextView trendView = (TextView) findViewById(R.id.textLibreHeader);
    chart = (LineChartView) findViewById(R.id.libre_chart);
    List<Line> lines = new ArrayList<Line>();
    List<PointValue> lineValues = new ArrayList<PointValue>();
    final float conversion_factor_mmol = (float) (doMgdl ? 1 : Constants.MGDL_TO_MMOLL);
    LibreBlock libreBlock = LibreBlock.getLatestForTrend();
    if (libreBlock == null) {
        trendView.setText("No libre data to display");
        setupEmptyCharts();
        return;
    }
    String time = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT).format(new Date((long) libreBlock.timestamp));
    ArrayList<Float> bg_data = getLatestBg(libreBlock);
    if (bg_data == null) {
        trendView.setText("Error displaying data for " + time);
        setupEmptyCharts();
        return;
    }
    trendView.setText("Scan from " + time);
    float min = 1000;
    float max = 0;
    int i = 0;
    for (float bg : bg_data) {
        if (min > bg) {
            min = bg;
        }
        if (max < bg) {
            max = bg;
        }
        lineValues.add(new PointValue(-i, bg * conversion_factor_mmol));
        i++;
    }
    Line trendLine = new Line(lineValues);
    trendLine.setColor(ChartUtils.COLOR_RED);
    trendLine.setHasLines(false);
    trendLine.setHasPoints(true);
    lines.add(trendLine);
    final int MIN_GRAPH = 20;
    if (max - min < MIN_GRAPH) {
        // On relative flat trend the graph can look very noise althouth with the right resolution it is not that way.
        // I will add two dummy invisible points that will cause the graph to look with bigger Y range.
        float average = (max + min) / 2;
        List<PointValue> dummyPointValues = new ArrayList<PointValue>();
        Line dummyPointLine = new Line(dummyPointValues);
        dummyPointValues.add(new PointValue(0, (average - MIN_GRAPH / 2) * conversion_factor_mmol));
        dummyPointValues.add(new PointValue(0, (average + MIN_GRAPH / 2) * conversion_factor_mmol));
        dummyPointLine.setColor(ChartUtils.COLOR_RED);
        dummyPointLine.setHasLines(false);
        dummyPointLine.setHasPoints(false);
        lines.add(dummyPointLine);
    }
    Axis axisX = new Axis();
    Axis axisY = new Axis().setHasLines(true);
    axisX.setTextSize(16);
    axisY.setTextSize(16);
    axisX.setName("Time from last scan");
    axisY.setName("Glucose " + (doMgdl ? "mg/dl" : "mmol/l"));
    data = new LineChartData(lines);
    data.setAxisXBottom(axisX);
    data.setAxisYLeft(axisY);
    chart.setLineChartData(data);
}

Example 27 with Axis

use of lecho.lib.hellocharts.model.Axis in project hellocharts-android by lecho.

the class AxesRenderer method drawInBackground.

/**
 * Prepare axes coordinates and draw axes lines(if enabled) in the background.
 *
 * @param canvas
 */
public void drawInBackground(Canvas canvas) {
    Axis axis = chart.getChartData().getAxisYLeft();
    if (null != axis) {
        prepareAxisToDraw(axis, LEFT);
        drawAxisLines(canvas, axis, LEFT);
    }
    axis = chart.getChartData().getAxisYRight();
    if (null != axis) {
        prepareAxisToDraw(axis, RIGHT);
        drawAxisLines(canvas, axis, RIGHT);
    }
    axis = chart.getChartData().getAxisXBottom();
    if (null != axis) {
        prepareAxisToDraw(axis, BOTTOM);
        drawAxisLines(canvas, axis, BOTTOM);
    }
    axis = chart.getChartData().getAxisXTop();
    if (null != axis) {
        prepareAxisToDraw(axis, TOP);
        drawAxisLines(canvas, axis, TOP);
    }
}