FillY plot - ScottPlot 5.0 Cookbook

This page is part of the ScottPlot 5.0 Cookbook

⚠️ ScottPlot 5.0.8-beta is a preview package

This page describes a beta release of ScottPlot. It is available on NuGet as a preview package, but its API is not stable and it is not recommended for production use. See the ScottPlot Versions page for more information.

FillY From Array Data

FillY plots can be created from X, Y1, and Y2 arrays.

ScottPlot.Plot myPlot = new();

RandomDataGenerator dataGen = new(0);

int count = 20;
double[] xs = Generate.Consecutive(count);
double[] ys1 = dataGen.RandomWalk(count, offset: -5);
double[] ys2 = dataGen.RandomWalk(count, offset: 5);

var xyy = myPlot.Add.FillY(xs, ys1, ys2);
xyy.FillStyle.Color = Colors.Magenta.WithAlpha(100);

myPlot.SavePng("filly-from-array-data.png");

FillY From Scatter Plots

FillY plots can be created from two scatter plots that share the same X values.

ScottPlot.Plot myPlot = new();

RandomDataGenerator dataGen = new(0);

int count = 20;
double[] xs = Generate.Consecutive(count);
double[] ys1 = dataGen.RandomWalk(count, offset: -5);
double[] ys2 = dataGen.RandomWalk(count, offset: 5);

var scatter1 = myPlot.Add.Scatter(xs, ys1);
var scatter2 = myPlot.Add.Scatter(xs, ys2);

var xyy = myPlot.Add.FillY(scatter1, scatter2);
xyy.FillStyle.Color = Colors.Blue.WithAlpha(100);

myPlot.SavePng("filly-from-scatter-plots.png");

FillY with Custom Type

FillY plots can be created from data of any type if a conversion function is supplied.

ScottPlot.Plot myPlot = new();

// create source data in a nonstandard data type
List<(int, int, int)> data = new();
Random rand = new(0);
for (int i = 0; i < 10; i++)
{
    int x = i;
    int y1 = rand.Next(0, 10);
    int y2 = rand.Next(20, 30);
    data.Add((x, y1, y2));
}

// create a custom converter for the source data type
static (double, double, double) MyConverter((int, int, int) s) => (s.Item1, s.Item2, s.Item3);

// create a filled plot from source data using the custom converter
myPlot.Add.FillY(data, MyConverter);

myPlot.SavePng("filly-with-custom-type.png");

FillY Plot Styling

FillY plots can be customized using public properties.

ScottPlot.Plot myPlot = new();

RandomDataGenerator dataGen = new(0);

int count = 20;
double[] xs = Generate.Consecutive(count);
double[] ys1 = dataGen.RandomWalk(count, offset: -5);
double[] ys2 = dataGen.RandomWalk(count, offset: 5);

var xyy = myPlot.Add.FillY(xs, ys1, ys2);
xyy.FillStyle.Color = Colors.OrangeRed.WithAlpha(100);

xyy.MarkerStyle.IsVisible = true;
xyy.MarkerStyle.Shape = MarkerShape.OpenSquare;
xyy.MarkerStyle.Size = 8;

xyy.LineStyle.AntiAlias = true;
xyy.LineStyle.Color = Colors.DarkBlue;
xyy.LineStyle.Pattern = LinePattern.Dot;
xyy.LineStyle.Width = 2;

myPlot.SavePng("filly-plot-styling.png");