/**
* Sets the x axis range so all the values fit the way I expect
*
* @param index
*/
public void fitData(int index) {
XYSeries series = mChart.getDataset().getSeriesAt(index);
double barLength = (series.getMaxX() - series.getMinX()) / series.getItemCount();
mChart.getRenderer().setXAxisMax(series.getMaxX() + barLength / 2);
mChart.getRenderer().setXAxisMin(series.getMinX() - barLength / 2);
}
private void setGraphicalView(@Nullable PlotBoundaries plotBoundaries) {
double minValue = plotBoundaries == null ? DEFAULT_MIN_NUMBER : plotBoundaries.xMin;
double maxValue = plotBoundaries == null ? DEFAULT_MAX_NUMBER : plotBoundaries.xMax;
final ViewGroup graphContainer = (ViewGroup) findViewById(R.id.plot_view_container);
if (graphicalView != null) {
graphContainer.removeView(graphicalView);
}
chart = prepareChart(minValue, maxValue, expression, variable);
// reverting boundaries (as in prepareChart() we add some cached values )
double minX = Double.MAX_VALUE;
double minY = Double.MAX_VALUE;
double maxX = Double.MIN_VALUE;
double maxY = Double.MIN_VALUE;
for (XYSeries series : chart.getDataset().getSeries()) {
minX = Math.min(minX, series.getMinX());
minY = Math.min(minY, series.getMinY());
maxX = Math.max(maxX, series.getMaxX());
maxY = Math.max(maxY, series.getMaxY());
}
Log.d(
CalculatorPlotActivity.class.getName(),
"min x: " + minX + ", min y: " + minY + ", max x: " + maxX + ", max y: " + maxY);
Log.d(CalculatorPlotActivity.class.getName(), "Plot boundaries are " + plotBoundaries);
if (plotBoundaries == null) {
chart.getRenderer().setXAxisMin(Math.max(minX, minValue));
chart.getRenderer().setYAxisMin(Math.max(minY, minValue));
chart.getRenderer().setXAxisMax(Math.min(maxX, maxValue));
chart.getRenderer().setYAxisMax(Math.min(maxY, maxValue));
} else {
chart.getRenderer().setXAxisMin(plotBoundaries.xMin);
chart.getRenderer().setYAxisMin(plotBoundaries.yMin);
chart.getRenderer().setXAxisMax(plotBoundaries.xMax);
chart.getRenderer().setYAxisMax(plotBoundaries.yMax);
}
graphicalView = new GraphicalView(this, chart);
graphicalView.addZoomListener(
new ZoomListener() {
@Override
public void zoomApplied(ZoomEvent e) {
updateDataSets(chart);
}
@Override
public void zoomReset() {
updateDataSets(chart);
}
},
true,
true);
graphicalView.addPanListener(
new PanListener() {
@Override
public void panApplied() {
Log.d(TAG, "org.achartengine.tools.PanListener.panApplied");
updateDataSets(chart);
}
});
graphContainer.addView(graphicalView);
updateDataSets(chart, 50);
}
