/** DESCRIPTION: Sets the boundaries for the X and Y-axis based on the data values. */
private void setPlotAxisBoundaries() {
// set y-axis boundaries
long boundy = 25;
while (maxy >= boundy) boundy *= 2;
plot.setRangeBoundaries(0, (float) boundy, BoundaryMode.FIXED);
// set y-axis steps
double stepy = ((double) boundy) / 10;
plot.setRangeStep(XYStepMode.INCREMENT_BY_VAL, stepy);
plot.setTicksPerRangeLabel(2);
// set x-axis boundaries
lowerboundx = minx - 1;
upperboundx = maxx + 1;
plot.setDomainBoundaries(lowerboundx, upperboundx, BoundaryMode.FIXED);
// set x-axis steps
plot.setDomainStep(XYStepMode.INCREMENT_BY_VAL, 1);
plot.setTicksPerDomainLabel(1);
// determine the number of months being plotted
long months = maxx - minx + 1;
// adjust bar thickness based on number of months being plotted
BarRenderer<?> barRenderer = (BarRenderer<?>) plot.getRenderer(BarRenderer.class);
if (barRenderer != null) {
Display display = activity.getWindowManager().getDefaultDisplay();
float displayWidth = Utilities.convertPixelsToDp(display.getWidth());
float plotWidth = displayWidth * 0.75f;
float barWidth = plotWidth / months;
barRenderer.setBarWidth(barWidth);
}
// adjust label size based on number of months being plotted
xlabels.setAbbreviate(months > 6);
}
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();
}