This version removes C# interop from the core F# Plotly.NET library, offloading those implementations directly to the native C# lib Plotly.NET.CSharp: Milestone link with all the fixed/closed issues Breaking:** Plotly.NET assemblies are no longer strong-named. Maintaining a strong-named build chain has caused recurring friction (see #452, #371, and the broader discussion at StephenCleary/AsyncEx#129) and forced us to maintain a re-packaged signed fork of Giraffe.ViewEngine (giraffe-fsharp/Giraffe.ViewEngine#23). Consumers that still need strong-named binaries can use brutaldev/StrongNameSigner to sign assemblies post-build. As a consequence, the html dsl dependency switches back from Giraffe.ViewEngine.StrongName 2.0.0-alpha1 to upstream Giraffe.ViewEngine 1.4.0. The namespace is unchanged, so user code is not affected.

• #504: Upgrade DynamicObj to [8.0.0, 9.0.0), raising its transitive FSharp.Core minimum to 10.1.300. No Plotly.NET source adaptations were required. The upgrade includes revised hashing and equality for custom properties containing F# option values; ordinary optional chart arguments are unwrapped before storage.
• Bump bundled plotly.js to 2.28.0
• #459: Breaking: Rename nine ColorKeyword cases. The old names have been removed; replace usages and pattern matches using the mapping below. RGB values are unchanged, including LightSlateGray and LightSlateGrey, which both map to (119, 136, 153). | Removed name | Replacement | | --- | --- | | Darkolivegreen | DarkOliveGreen | | Honeydew | HoneyDew | | Hotpink | HotPink | | LightAalmon | LightSalmon | | LightAeaGreen | LightSeaGreen | | LightAkyBlue | LightSkyBlue | | LightAlateGray | LightSlateGray | | LightslateGrey | LightSlateGrey | | Skyblue | SkyBlue |
• #477: Fix tick-font serialization for parallel categories and parallel coordinates charts, and add StyleParam.Shape.HSpline for horizontal spline paths in parallel categories plots.
• #441: Encoded typed array support — plotly.js 2.28 introduced a base64 representation for numeric arrays. Plotly.NET supports it for selected trace fields and chart constructors:
• New EncodedTypedArray type (in Plotly.NET) carrying a base64 payload (bdata), a dtype tag (dtype), and an optional shape for multi-dimensional data. Supported dtypes: Float64, Float32, Int32, UInt32, Int16, UInt16, Int8, UInt8, UInt8Clamped.
• Convenience constructors: EncodedTypedArray.ofFloat64Array, ofFloat32Array, ofInt32Array, ofUInt32Array, ofInt16Array, ofUInt16Array, ofInt8Array, ofUInt8Array, ofUInt8ClampedArray — all accept a 1-D .NET array and an optional shape parameter for multi-dimensional layouts.
• Encoded fields added across the trace style modules (Trace2DStyle, Trace3DStyle, TracePolarStyle, TraceGeoStyle, TraceMapboxStyle, TraceTernaryStyle, TraceCarpetStyle, TraceDomainStyle, TraceSmithStyle), covering data arrays (XEncoded, YEncoded, ZEncoded, etc.), metadata arrays (IdsEncoded, CustomDataEncoded, MultiTextEncoded, SelectedPointsEncoded), error bar arrays (ArrayEncoded, ArrayminusEncoded), and trace-specific fields (e.g. Q1Encoded/MedianEncoded/Q3Encoded on BoxPlot, OpenEncoded/HighEncoded/LowEncoded/CloseEncoded on OHLC/Candlestick, OpacityScaleEncoded on Surface/Volume/IsoSurface, IntensityEncoded/IEncoded/JEncoded/KEncoded on Mesh3D, dimension ValuesEncoded on Splom/ParallelCoord).
• Encoded overloads added to selected F# Chart root functions (e.g. Chart.Scatter, Chart.Bar, Chart.Waterfall, Chart.Histogram, Chart.BoxPlot, Chart.Violin, Chart.OHLC, Chart.Candlestick, Chart.Splom, Chart.Histogram2D, Chart.Heatmap, Chart.Contour, Chart.Scatter3D, Chart.Surface, Chart.Mesh3D, Chart.Cone, Chart.StreamTube, Chart.Volume, Chart.IsoSurface, Chart.ScatterPolar, Chart.BarPolar, Chart.ScatterGeo, Chart.ChoroplethMap, Chart.ScatterMapbox, Chart.ChoroplethMapbox, Chart.DensityMapbox, Chart.ScatterTernary, Chart.Carpet, Chart.ScatterCarpet, Chart.ContourCarpet, Chart.ScatterSmith, Chart.Pie, Chart.FunnelArea, Chart.Sunburst, Chart.Treemap, Chart.Icicle) and selected derived convenience helpers (e.g. Chart.Point, Chart.Line, Chart.Spline, Chart.Bubble, Chart.Area, Chart.SplineArea, Chart.StackedArea, Chart.Range, Chart.Funnel, Chart.Histogram, Chart.StackedBar, Chart.PointDensity, Chart.PointPolar, Chart.PointGeo, Chart.PointMapbox, Chart.PointTernary, Chart.PointSmith, Chart.PointCarpet, Chart.Doughnut).
• Shared Sankey node/link objects accept encoded positions, source/target/value, and supported numeric metadata. Encoded values replace corresponding plain values when both are supplied in the same init/style call. Labels remain plain strings.
• One-dimensional samples do not need a shape; matrix inputs use an explicitly shaped flat payload. Strings, arbitrary objects, decimal, and 64-bit integer encoding are outside the supported dtype set. Image pixels and helpers that compute from plain inputs (such as Pareto, Residual, and AnnotatedHeatmap) have no direct encoded overload.
• The C# package exposes a selected subset of direct chart conveniences, documented in its release notes and the encoded-array guide. This release does not claim all-chart parity or measured encoding performance gains.
• Sankey node alignment — StyleParam.SankeyNodeAlign supports Left, Right, Center, and Justify through SankeyNodes and the F# / C# chart conveniences.
• Virtual-WebGL — existing DisplayOptions.AdditionalHeadTags can load the optional WebGL 1 virtualization script before plotly.js; the encoded-array guide shows the script ordering.
• #500: Internal refactor — split the monolithic Chart.fs into per-chart-family files (Chart2D_Scatter.fs, Chart2D_Bar.fs, etc.) for better maintainability. No API changes.
• Set comparison charts — new composite charts for visualizing set membership and intersections (in ChartComposite):
• Chart.Venn draws a Venn diagram comparing two or three sets (set1, set2, optional Set3), annotating each region with its member count. Axes are locked to a 1:1 pixel ratio so the circles always render round, and colors/labels/text font are customizable.
• Chart.UpSet draws an UpSet plot for an arbitrary number of sets: an intersection matrix, an intersection-size bar chart, and a set-size bar chart, with optional per-intersection attribute plots via SetData/SetDataChartsTitle.
• Both take plain #seq<string> / #seq<#seq<string>> set inputs (treated as sets internally; duplicates ignored) and support the standard UseDefaults parameter.
• Dev tooling: target framework for build/test projects updated to net10.0; NuGet dependency updates (Newtonsoft.Json 13.0.4, Deedle 5.0.0, FSharp.Data 8.1.7, FAKE 6.1.4, Microsoft.NET.Test.Sdk 18.x).