private void scalingXY()
{
DataPoint[] points = new DataPoint[100];
for (int i = 0; i < points.Length; i++)
{
points[i] = new DataPoint(i, Math.Sin(i * 0.5) * 20 * (Math.Random() * 10 + 1));
}
LineGraphSeries series = new LineGraphSeries(points);
// set manual X bounds
graphView.Viewport.YAxisBoundsManual = true;
graphView.Viewport.SetMinY(-150);
graphView.Viewport.SetMaxY(150);
graphView.Viewport.XAxisBoundsManual = true;
graphView.Viewport.SetMinX(4);
graphView.Viewport.SetMaxX(80);
// enable scaling
graphView.Viewport.Scalable = true;
graphView.Viewport.SetScalableY(true);
series.Title = "Random Curve";
graphView.AddSeries(series);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.GraphViewLayout);
ActionBar.Hide();
//.RequestedOrientation = Android.Content.PM.ScreenOrientation.Landscape;
this.RequestedOrientation = ScreenOrientation.SensorLandscape;
GraphView graph = FindViewById <GraphView>(Resource.Id.graph);
// first series is a line
DataPoint[] points = new DataPoint[100];
Random rand = new Random();
for (int i = 0; i < points.Length; i++)
{
points[i] = new DataPoint(i, Math.Sin(i * 0.5) * 20 * (rand.NextDouble() * 10 + 1));
}
LineGraphSeries series = new LineGraphSeries(points);
//series.Color = Resource.Color.colorPrimary;
//series.Color = Resource.Color.testColor;
DataPoint[] points1 = new DataPoint[200];
Random rand1 = new Random();
for (int i = 0; i < points1.Length; i++)
{
points1[i] = new DataPoint(i, Math.Sin(i * 0.5) * 10 * (rand1.NextDouble() * 2 + 1));
}
LineGraphSeries series1 = new LineGraphSeries(points1);
series1.Color = Resource.Color.launcher_background;
//graph.Viewport.BackgroundColor = Resource.Color.abc_background_cache_hint_selector_material_dark;
// set manual X
graph.Viewport.YAxisBoundsManual = true;
graph.Viewport.SetMinY(-150);
graph.Viewport.SetMaxY(150);
graph.Viewport.XAxisBoundsManual = true;
graph.Viewport.SetMinX(4);
graph.Viewport.SetMaxX(80);
// enable scaling
graph.Viewport.Scalable = true;
graph.Viewport.SetScalableY(true);
series.Title = "Random Curve";
//series.setTitle("Random Curve 1");
series.Color = unchecked ((int)0xFF00FF00);
series.DrawDataPoints = true;
//series.DataPointsRadius = 10;
//series.setDrawDataPoints(true);
//series.setDataPointsRadius(10);
//series.setThickness(8);
series1.Title = "Random1 Curve";
series1.Color = unchecked ((int)0xFFFF0000);
series1.DrawDataPoints = true;
graph.AddSeries(series);
graph.AddSeries(series1);
graph.LegendRenderer.Visible = true;
graph.LegendRenderer.Align = LegendRenderer.LegendAlign.Top;
}
private void PopulateSampleData(LineGraphModel model, int lapCount, int maxFrameCount, LineGraphSeries series, float scale)
{
float lastValue = series.Minimum + ((series.Maximum - series.Minimum) / 2);
for (int lapIdx = 0; lapIdx < lapCount; lapIdx++)
{
model.SetValue(lapIdx, 0, series.FieldIndex, lastValue);
for (int frameIdx = 1; frameIdx < maxFrameCount; frameIdx++)
{
float valueDelta = (float)((_randomValueGenerator.NextDouble() - .5F) * scale);
float newValue = lastValue + valueDelta;
if (newValue > series.Maximum)
{
newValue = series.Maximum;
}
if (newValue < series.Minimum)
{
newValue = series.Minimum;
}
model.SetValue(lapIdx, frameIdx, series.FieldIndex, newValue);
lastValue = newValue;
}
}
}
