Directional sensor readings

Create a console project, add the ChartForgeX package, and replace Program.cs with this source. Run it to write SVG, PNG and HTML with the default system fonts.

For the same typography as the gallery, download the gallery-font recipe and copy the gallery’s fonts directory beside your program.

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using ChartForgeX.Core;
using ChartForgeX.Primitives;
using ChartForgeX.Rendering;
using ChartForgeX.Themes;
using ChartForgeX.Topology;
using ChartForgeX.Typography;
using ChartForgeX.VisualArtifacts;
using ChartForgeX.VisualBlocks;

var mode = VisualThemeMode.Light;
var theme = VisualTheme.Graphite();
var model = PolarRecipe.Create("compact-angular-reversal", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(360, 360)), theme, mode,
    new VisualFrame("Directional sensor readings", "Clockwise authored radians retain their source directions and values", showLegend: null, showSurface: false));
var prepared = model.Prepare(context);
File.WriteAllText("visual.svg", prepared.ToSvg());
File.WriteAllBytes("visual.png", prepared.ToPng());
File.WriteAllText("visual.html", prepared.ToArtifact("example", VisualArtifactKind.Chart).ToHtmlPage());

/// <summary>Directional readings with numeric angles, degree captions and optional reversed angles.</summary>
public static class PolarRecipe {
    /// <summary>Creates directional observations or compares irregularly spaced readings with expected values.</summary>
    public static Chart Create(string variant = "wide", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("wide" or "compact" or "sparse" or "options" or "compact-options" or "angular-reversal" or "compact-angular-reversal"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        if (variant is "angular-reversal" or "compact-angular-reversal") return Reversed();
        var observed = new ChartSeries(new ChartSeriesId("observed"), "Observed", ChartSeriesKind.Polar,
            Enumerable.Range(0, 6).Select(index => new ChartPoint(index * Math.PI / 3, 25 + index * 7)));
        var chart = Chart.Create().AddSeries(observed).ConfigureXAxis(axis => axis.LabelFormatter = Degrees)
            .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture));
        if (variant == "options") {
            chart.Options.YAxis.WithBounds(0, 100);
            chart.Options.YAxis.TickCount = 6;
            chart.Options.YAxis.Labels.Add(new ChartAxisLabel(20, "20 · Target"));
        }
        return chart;
    }

    private static Chart Reversed() {
        var angles = new[] { 0d, .55, 1.35, 2.8, 3.65, 5.4 };
        var readings = new[] { 84d, 62, 96, 58, 78, 69 };
        var expected = new[] { 72d, 76, 82, 70, 74, 80 };
        var observed = new ChartSeries(new ChartSeriesId("observed"), "Observed", ChartSeriesKind.Polar,
            angles.Select((angle, index) => new ChartPoint(angle, readings[index])));
        var target = new ChartSeries(new ChartSeriesId("target"), "Expected", ChartSeriesKind.Polar,
            angles.Select((angle, index) => new ChartPoint(angle, expected[index])));
        return Chart.Create().WithYAxisBounds(0, 100).WithDataLabels(false)
            .ConfigureXAxis(axis => { axis.LabelFormatter = Degrees; axis.WithReversal(); })
            .AddSeries(observed).AddSeries(target)
            .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture));
    }

    private static string Degrees(double angle) => (angle * 180 / Math.PI).ToString("0", System.Globalization.CultureInfo.InvariantCulture) + "°";
}

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using ChartForgeX.Core;
using ChartForgeX.Primitives;
using ChartForgeX.Rendering;
using ChartForgeX.Themes;
using ChartForgeX.Topology;
using ChartForgeX.Typography;
using ChartForgeX.VisualArtifacts;
using ChartForgeX.VisualBlocks;

var mode = VisualThemeMode.Dark;
var theme = VisualTheme.Graphite();
var model = PolarRecipe.Create("compact-angular-reversal", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(360, 360)), theme, mode,
    new VisualFrame("Directional sensor readings", "Clockwise authored radians retain their source directions and values", showLegend: null, showSurface: false));
var prepared = model.Prepare(context);
File.WriteAllText("visual.svg", prepared.ToSvg());
File.WriteAllBytes("visual.png", prepared.ToPng());
File.WriteAllText("visual.html", prepared.ToArtifact("example", VisualArtifactKind.Chart).ToHtmlPage());

/// <summary>Directional readings with numeric angles, degree captions and optional reversed angles.</summary>
public static class PolarRecipe {
    /// <summary>Creates directional observations or compares irregularly spaced readings with expected values.</summary>
    public static Chart Create(string variant = "wide", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("wide" or "compact" or "sparse" or "options" or "compact-options" or "angular-reversal" or "compact-angular-reversal"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        if (variant is "angular-reversal" or "compact-angular-reversal") return Reversed();
        var observed = new ChartSeries(new ChartSeriesId("observed"), "Observed", ChartSeriesKind.Polar,
            Enumerable.Range(0, 6).Select(index => new ChartPoint(index * Math.PI / 3, 25 + index * 7)));
        var chart = Chart.Create().AddSeries(observed).ConfigureXAxis(axis => axis.LabelFormatter = Degrees)
            .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture));
        if (variant == "options") {
            chart.Options.YAxis.WithBounds(0, 100);
            chart.Options.YAxis.TickCount = 6;
            chart.Options.YAxis.Labels.Add(new ChartAxisLabel(20, "20 · Target"));
        }
        return chart;
    }

    private static Chart Reversed() {
        var angles = new[] { 0d, .55, 1.35, 2.8, 3.65, 5.4 };
        var readings = new[] { 84d, 62, 96, 58, 78, 69 };
        var expected = new[] { 72d, 76, 82, 70, 74, 80 };
        var observed = new ChartSeries(new ChartSeriesId("observed"), "Observed", ChartSeriesKind.Polar,
            angles.Select((angle, index) => new ChartPoint(angle, readings[index])));
        var target = new ChartSeries(new ChartSeriesId("target"), "Expected", ChartSeriesKind.Polar,
            angles.Select((angle, index) => new ChartPoint(angle, expected[index])));
        return Chart.Create().WithYAxisBounds(0, 100).WithDataLabels(false)
            .ConfigureXAxis(axis => { axis.LabelFormatter = Degrees; axis.WithReversal(); })
            .AddSeries(observed).AddSeries(target)
            .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture));
    }

    private static string Degrees(double angle) => (angle * 180 / Math.PI).ToString("0", System.Globalization.CultureInfo.InvariantCulture) + "°";
}