public static PlotModel CreatePeaks(OxyPalette palette = null, bool includeContours = true, int n = 100)
{
double x0 = -3.1;
double x1 = 3.1;
double y0 = -3;
double y1 = 3;
Func<double, double, double> peaks = (x, y) => 3 * (1 - x) * (1 - x) * Math.Exp(-(x * x) - (y + 1) * (y + 1)) - 10 * (x / 5 - x * x * x - y * y * y * y * y) * Math.Exp(-x * x - y * y) - 1.0 / 3 * Math.Exp(-(x + 1) * (x + 1) - y * y);
var xvalues = ArrayBuilder.CreateVector(x0, x1, n);
var yvalues = ArrayBuilder.CreateVector(y0, y1, n);
var peaksData = ArrayBuilder.Evaluate(peaks, xvalues, yvalues);
var model = new PlotModel { Title = "Peaks" };
model.Axes.Add(new LinearColorAxis { Position = AxisPosition.Right, Palette = palette ?? OxyPalettes.Jet(500), HighColor = OxyColors.Gray, LowColor = OxyColors.Black });
var hms = new HeatMapSeries { X0 = x0, X1 = x1, Y0 = y0, Y1 = y1, Data = peaksData };
model.Series.Add(hms);
if (includeContours)
{
var cs = new ContourSeries
{
Color = OxyColors.Black,
FontSize = 0,
ContourLevelStep = 1,
LabelBackground = OxyColors.Undefined,
ColumnCoordinates = yvalues,
RowCoordinates = xvalues,
Data = peaksData
};
model.Series.Add(cs);
}
return model;
}
private static PlotModel CreateRandomScatterSeriesWithColorAxisPlotModel(int n, OxyPalette palette, MarkerType markerType, AxisPosition colorAxisPosition, OxyColor highColor, OxyColor lowColor)
{
var model = new PlotModel { Title = string.Format("ScatterSeries (n={0})", n), Background = OxyColors.LightGray };
var colorAxis = new LinearColorAxis { Position = colorAxisPosition, Palette = palette, Minimum = -1, Maximum = 1, HighColor = highColor, LowColor = lowColor };
model.Axes.Add(colorAxis);
model.Series.Add(CreateRandomScatterSeries(n, markerType, false, true, colorAxis));
return model;
}
public static PlotModel CreateRandomScatterSeriesWithColorAxisPlotModel(int n, OxyPalette palette, MarkerType markerType = MarkerType.Square, AxisPosition colorAxisPosition = AxisPosition.Right, OxyColor highColor = null, OxyColor lowColor = null)
{
var model = new PlotModel(string.Format("ScatterSeries (n={0})", n)) { Background = OxyColors.LightGray };
model.Axes.Add(new ColorAxis { Position = colorAxisPosition, Palette = palette, Minimum = -1, Maximum = 1, HighColor = highColor, LowColor = lowColor });
var s1 = new ScatterSeries
{
MarkerType = markerType,
MarkerSize = 6,
};
var random = new Random();
for (int i = 0; i < n; i++)
{
double x = random.NextDouble() * 2.2 - 1.1;
s1.Points.Add(new ScatterPoint(x, random.NextDouble()) { Value = x });
}
model.Series.Add(s1);
return model;
}
static public Mat GetPresetColorMat(string strPalette)
{
OxyPlot.OxyPalette palette = null;
Mat colorMap = new Mat(maxLookUpTable, 1, Emgu.CV.CvEnum.DepthType.Cv8U, 3);
Image <Bgr, byte> colorImage = new Image <Bgr, byte>(1, maxLookUpTable);
switch (strPalette)
{
case "WhiteHot":
palette = Palette.WhiteHot(maxLookUpTable);
break;
case "BlackHot":
palette = Palette.BlackHot(maxLookUpTable);
break;
case "ColdHot":
palette = Palette.ColdHot(maxLookUpTable);
break;
case "HotSpot":
palette = Palette.HotSpot(maxLookUpTable);
break;
case "ColdSpot":
palette = Palette.ColdSpot(maxLookUpTable);
break;
case "Rainbow":
palette = Palette.Rainbow(maxLookUpTable);
break;
case "Ironbow":
palette = Palette.Ironbow(maxLookUpTable);
break;
case "Cool":
palette = OxyPlot.OxyPalettes.Cool(maxLookUpTable);
break;
case "Hot":
palette = OxyPlot.OxyPalettes.Hot(maxLookUpTable);
break;
case "Gray":
palette = OxyPlot.OxyPalettes.Gray(maxLookUpTable);
break;
case "Hue":
palette = OxyPlot.OxyPalettes.Hue(maxLookUpTable);
break;
case "Jet":
palette = OxyPlot.OxyPalettes.Jet(maxLookUpTable);
break;
case "Transparent":
palette = OxyPalette.Interpolate(maxLookUpTable, OxyColors.Transparent);
break;
default:
case "None":
//palette = null; //
palette = OxyPlot.OxyPalettes.Gray(maxLookUpTable); // Default "None" is gray
break;
}
if (palette != null)
{
OxyColor[] colorTable = palette.Colors.ToArray();
IntPtr ptrData = colorMap.DataPointer;
for (var index = 0; index < palette.Colors.Count; index++)
{
byte[] rgb = new byte[3] {
colorTable[index].B, colorTable[index].G, colorTable[index].R
};
Marshal.Copy(rgb, 0, ptrData + index * rgb.Length, rgb.Length);
}
}
return(colorMap);
}
