Coverage across service areas

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 = HeatmapColorScaleRecipe.Create("color-scale", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(800, 440)), theme, mode,
    new VisualFrame("Coverage across service areas", "Signed measurements share a fixed color domain", 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>Shows positive and negative measurements on a diverging heatmap scale.</summary>
public static class HeatmapColorScaleRecipe {
    /// <summary>Creates the selected numeric color-scale example.</summary>
    public static Chart Create(string variant = "color-scale", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("color-scale" or "compact-color-scale")) throw new ArgumentOutOfRangeException(nameof(variant));
        var colors = VisualTheme.Graphite().Resolve(mode);
        var scale = variant == "color-scale"
            ? ChartColorScale.Diverging(new[] { colors.Status.Critical.Fill }, colors.Surface,
                new[] { colors.SequentialRamp[2], colors.SequentialRamp[3], colors.SequentialRamp[4] }, 0)
            : ChartColorScale.Diverging(colors.Status.Critical.Fill, colors.Surface, colors.Palette[0], 0);
        return Chart.Create().WithXLabels("Mon", "Tue", "Wed", "Thu", "Fri", "Sat").WithDataLabels()
            .AddHeatmapRow("Primary", new double?[] { -20, -10, 0, null, 10, 20 }, id: new ChartSeriesId("primary-measurements"))
            .AddHeatmapRow("Secondary", new double?[] { -15, 0, 5, 15, null, 25 }, id: new ChartSeriesId("secondary-measurements"))
            .WithHeatmapColorScale(scale.WithValueRange(-20, 20).WithLabels("Below target", "Target", "Above target"))
            .WithValueFormat(ChartValueFormat.Number("0.##", 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 = HeatmapColorScaleRecipe.Create("color-scale", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(800, 440)), theme, mode,
    new VisualFrame("Coverage across service areas", "Signed measurements share a fixed color domain", 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>Shows positive and negative measurements on a diverging heatmap scale.</summary>
public static class HeatmapColorScaleRecipe {
    /// <summary>Creates the selected numeric color-scale example.</summary>
    public static Chart Create(string variant = "color-scale", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("color-scale" or "compact-color-scale")) throw new ArgumentOutOfRangeException(nameof(variant));
        var colors = VisualTheme.Graphite().Resolve(mode);
        var scale = variant == "color-scale"
            ? ChartColorScale.Diverging(new[] { colors.Status.Critical.Fill }, colors.Surface,
                new[] { colors.SequentialRamp[2], colors.SequentialRamp[3], colors.SequentialRamp[4] }, 0)
            : ChartColorScale.Diverging(colors.Status.Critical.Fill, colors.Surface, colors.Palette[0], 0);
        return Chart.Create().WithXLabels("Mon", "Tue", "Wed", "Thu", "Fri", "Sat").WithDataLabels()
            .AddHeatmapRow("Primary", new double?[] { -20, -10, 0, null, 10, 20 }, id: new ChartSeriesId("primary-measurements"))
            .AddHeatmapRow("Secondary", new double?[] { -15, 0, 5, 15, null, 25 }, id: new ChartSeriesId("secondary-measurements"))
            .WithHeatmapColorScale(scale.WithValueRange(-20, 20).WithLabels("Below target", "Target", "Above target"))
            .WithValueFormat(ChartValueFormat.Number("0.##", CultureInfo.InvariantCulture));
    }
}