@Override
public void onCreate(Bundle savedInstanceState) {
// android boilerplate stuff
super.onCreate(savedInstanceState);
setContentView(R.layout.dynamicxyplot_example);
// get handles to our View defined in layout.xml:
dynamicPlot = (XYPlot) findViewById(R.id.dynamicXYPlot);
plotUpdater = new MyPlotUpdater(dynamicPlot);
// only display whole numbers in domain labels
dynamicPlot.getGraphWidget().setDomainValueFormat(new DecimalFormat("0"));
// getInstance and position datasets:
data = new SampleDynamicXYDatasource();
SampleDynamicSeries sine1Series = new SampleDynamicSeries(data, 0, "Sine 1");
SampleDynamicSeries sine2Series = new SampleDynamicSeries(data, 1, "Sine 2");
LineAndPointFormatter formatter1 =
new LineAndPointFormatter(Color.rgb(0, 0, 0), null, null, null);
formatter1.getLinePaint().setStrokeJoin(Paint.Join.ROUND);
formatter1.getLinePaint().setStrokeWidth(10);
dynamicPlot.addSeries(sine1Series, formatter1);
LineAndPointFormatter formatter2 =
new LineAndPointFormatter(Color.rgb(0, 0, 200), null, null, null);
formatter2.getLinePaint().setStrokeWidth(10);
formatter2.getLinePaint().setStrokeJoin(Paint.Join.ROUND);
// formatter2.getFillPaint().setAlpha(220);
dynamicPlot.addSeries(sine2Series, formatter2);
// hook up the plotUpdater to the data model:
data.addObserver(plotUpdater);
// thin out domain tick labels so they dont overlap each other:
dynamicPlot.setDomainStepMode(XYStepMode.INCREMENT_BY_VAL);
dynamicPlot.setDomainStepValue(5);
dynamicPlot.setRangeStepMode(XYStepMode.INCREMENT_BY_VAL);
dynamicPlot.setRangeStepValue(10);
dynamicPlot.setRangeValueFormat(new DecimalFormat("###.#"));
// uncomment this line to freeze the range boundaries:
dynamicPlot.setRangeBoundaries(-100, 100, BoundaryMode.FIXED);
// create a dash effect for domain and range grid lines:
DashPathEffect dashFx =
new DashPathEffect(new float[] {PixelUtils.dpToPix(3), PixelUtils.dpToPix(3)}, 0);
dynamicPlot.getGraphWidget().getDomainGridLinePaint().setPathEffect(dashFx);
dynamicPlot.getGraphWidget().getRangeGridLinePaint().setPathEffect(dashFx);
}
private void ShowPlot() {
mySimpleXYPlot = (XYPlot) findViewById(R.id.chartPlot);
mySimpleXYPlot.setTitle("Weight");
if (plotLine != null) mySimpleXYPlot.removeSeries(plotLine);
mySimpleXYPlot.getGraphWidget().getGridBackgroundPaint().setColor(Color.WHITE);
mySimpleXYPlot.getGraphWidget().getGridLinePaint().setColor(Color.BLACK);
mySimpleXYPlot
.getGraphWidget()
.getGridLinePaint()
.setPathEffect(new DashPathEffect(new float[] {1, 1}, 1));
mySimpleXYPlot.getGraphWidget().getDomainOriginLinePaint().setColor(Color.BLACK);
mySimpleXYPlot.getGraphWidget().getRangeOriginLinePaint().setColor(Color.BLACK);
mySimpleXYPlot.setBorderStyle(Plot.BorderStyle.SQUARE, null, null);
mySimpleXYPlot.getBorderPaint().setStrokeWidth(1);
mySimpleXYPlot.getBorderPaint().setAntiAlias(false);
mySimpleXYPlot.getBorderPaint().setColor(Color.WHITE);
mySimpleXYPlot.getGraphWidget().setPaddingRight(5);
// Create a formatter to use for drawing a series using LineAndPointRenderer:
LineAndPointFormatter series1Format =
new LineAndPointFormatter(
Color.rgb(0, 100, 0), // line color
Color.rgb(0, 100, 0), // point color
Color.rgb(100, 200, 0)); // fill color
// setup our line fill paint to be a slightly transparent gradient:
Paint lineFill = new Paint();
lineFill.setAlpha(200);
lineFill.setShader(
new LinearGradient(0, 0, 0, 250, Color.WHITE, Color.GREEN, Shader.TileMode.MIRROR));
LineAndPointFormatter formatter =
new LineAndPointFormatter(Color.rgb(0, 0, 0), Color.BLUE, Color.RED);
formatter.setFillPaint(lineFill);
plotLine = new SimpleXYSeries(Arrays.asList(dates), Arrays.asList(weights), "Weight over time");
mySimpleXYPlot.addSeries(plotLine, formatter);
mySimpleXYPlot.redraw();
// draw a domain tick for each year:
int min = DomainMin();
int max = DomainMax();
int domainStep = domainStep(min, max);
mySimpleXYPlot.setDomainStep(XYStepMode.SUBDIVIDE, domainStep);
// mySimpleXYPlot.setDomainBoundaries(min, max, BoundaryMode.AUTO);
// customize our domain/range labels
mySimpleXYPlot.setDomainLabel("Date");
mySimpleXYPlot.setRangeLabel("Weight");
Double minimum = FindMinimum();
Double maximum = FindMaximum();
Double stepSize = FindStep(maximum, minimum);
mySimpleXYPlot.setRangeBoundaries(minimum, maximum, BoundaryMode.FIXED);
mySimpleXYPlot.setRangeStep(XYStepMode.INCREMENT_BY_VAL, stepSize);
mySimpleXYPlot.setDomainValueFormat(
new Format() {
private SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM");
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
// because our timestamps are in seconds and SimpleDateFormat expects milliseconds
// we multiply our timestamp by 1000:
long timestamp = ((Number) obj).longValue() * 1000;
Date date = new Date(timestamp);
return dateFormat.format(date, toAppendTo, pos);
}
@Override
public Object parseObject(String source, ParsePosition pos) {
return null;
}
});
// by default, AndroidPlot displays developer guides to aid in laying out your plot.
// To get rid of them call disableAllMarkup():
mySimpleXYPlot.disableAllMarkup();
}