ScottPlot

ScottPlot is a plotting library for .NET.

Documentation: https://scottplot.net/cookbook/4.1/category/quickstart/#scatter-plot

Versions

There are two major versions of ScottPlot:

4.1 — stable
5.0 — beta

Creating Plots

A ScottPlot.Plot can hold one or more Plottables:

using ScottPlot;

// width = 350
var plot = new Plot(350, 350);

Scatter Plots

Documentation: https://scottplot.net/cookbook/4.1/#scatter-plot

Simple

// sample data
double[] xs = DataGen.Consecutive(51);
double[] sin = DataGen.Sin(51);
double[] cos = DataGen.Cos(51);

// add two scatter plots:
plot.AddScatter(xs, sin);
plot.AddScatter(xs, cos);

Advanced

Manually create a scatter plot Plottable:

// data
double[] xs = DataGen.Consecutive(51);
double[] sin = DataGen.Sin(51);

var scatterPlot = new ScottPlot.Plottable.ScatterPlot(xs, sin);

// customize the scatter plot:
scatterPlot.Color = Color.Navy;
scatterPlot.MarkerSize = 10;
scatterPlot.MarkerShape = MarkerShape.filledDiamond;

plot.Add(scatterPlot);

A manually-created scatter plot

Plotting DataTime Data

Use DateTime.ToOADate() to convert a DateTime[] to a double[]:

DateTime[] myDates = new DateTime[100];

double[] xs = myDates.Select(x => x.ToOADate()).ToArray();
double[] ys = DataGen.RandomWalk(myDates.Length);

Plot the data:
```
plot.AddScatter(xs, ys)
```
Configure the tick labels for a time format:
```
plot.XAxis.DateTimeFormat(true)
```

A scatter plot with DateTimes on the X axis

Customizing

Axis Customization

Documentation: https://scottplot.net/cookbook/4.1/category/axis-and-ticks/#axis-customizations

Axis Labels

plot.Title("Some Title");

plot.XAxis.Label("Horizontal below the plot");

plot.XAxis.Label2("Horizontal on top of the plot");

plot.YAxis.Label("Vertical Axis");

Axis Colors, Size & Fonts

// set the color of the axis labels, lines, ticks, and tick labels:
plot.XAxis.Color(Color.Green);

// customize an axis color, size, and font:
plot.YAxis.Label("Vertical Axis", Color.Magenta, size: 24, fontName: "Comic Sans MS");

Axis Limits

// -X, +X, -Y, +Y:
plot.SetAxisLimits(-20, 80, -2, 2);

Or:

plot.XAxis.SetBoundary(-20, 80);
plot.YAxis.SetBoundary(-2,2)

Grid Customization

Remove the grid:

plot.Grid(false)

A plot with no grid

Remove just the vertical (X axis) grid:

plot.XAxis.Grid(false)

A plot with only a horizontal grid

Legends

Documentation: https://scottplot.net/cookbook/4.1/#legend

For plottables that support them, add a legend:

plot.Legend();

A plot with two scatter plot plottables and a legend

Managing Plottables

Add a plottable:

plot.Add(somePlot);

Remove a plottable:

plot.Remove(somePlot);

Clear all plottables:

plot.Clear();

Saving Plots

plot.SaveFig("SomePlot.png");