I'm trying to add this beautiful Waterfall chart SciChart has with this wrapper:https://github.com/NRTDP/SciChartBlazorBut it looks like there is a problem with rendering 2d surfaces.
I've created a Chart.razor on Client side using new Blazor Web App with following code:
@page "/chart"@using SciChartBlazor@using SciChartBlazor.Axes@using SciChartBlazor.DataSeries@using SciChartBlazor.Modifiers@using SciChartBlazor.RenderableSeries@using SciChartBlazor.Services@rendermode InteractiveAuto@inject IJSRuntime JsRuntime <div id="@Id" @ref="_chart" style="height:600px" /><button @onclick=Load>Load</button>@code{ private string Id { get; set; } = "C" + Guid.NewGuid().ToString(); private protected ElementReference _chart; SciChartBuilder _chartBuilder = default!; int _seriesCount = 10; private async void Load() { for (int i = 0; i < _seriesCount; i++) { var XAxis = new NumericAxis() { Id = $"X{i}", MaxAutoTicks = 5, DrawMajorGridLines = false, GrowBy = new SciChartNumberRange(0, 0.2), VisibleRange = new SciChartNumberRange(-1000.0, 1000.0), VisibleRangeLimit = new SciChartNumberRange(-1000.0, 1000.0), IsVisible = (i == 0), //OverrideOffset = 0 }; await _chartBuilder.AddAxis(XAxis, AxisType.X); var YAxis = new NumericAxis() { Id = $"Y{i}", MaxAutoTicks = 5, DrawMajorGridLines = false, VisibleRange = new SciChartNumberRange(-100.0, 100.0), VisibleRangeLimit = new SciChartNumberRange(-1000.0, 1000.0), IsVisible = (i == 0), //OverrideOffset = 0 }; await _chartBuilder.AddAxis(YAxis, AxisType.Y); double[] x = new double[10]; double[] y = new double[10]; for (int j = 0; j < 10; j++) { x[j] = (double)j; y[j] = Math.Sin(j) * 100 + i; } var ser = new XyDataSeries<double, double>(x, y) { DataSeriesName = $"N{i}" }; var fastLineRenderableSeries = new SciChartBlazor.RenderableSeries.FastLineRenderableSeries<double, double>(ser) { Id = $"S{i}", XAxisId = $"X{i}", YAxisId = $"Y{i}", StrokeThickness = 1, Stroke = "#64BAE4" }; await _chartBuilder.AddSeries(fastLineRenderableSeries); } } protected override async Task OnAfterRenderAsync(bool firstRender) { if (firstRender) { //Create the chart _chartBuilder = new SciChartBuilder(_chart, JsRuntime, new SciChartBlazorService(JsRuntime, new SciChartOptions())); await _chartBuilder.CreateChart(); } }}
With _seriesCount equals 1 it builds a simple chart, but adding more series returns an error in a line:
this.nativeArgs.StartIndex = rp.indexesRange.min
Full trace:
Error from chart in div Ced51579e-26cc-4536-96e2-49f46254f9db: TypeError: Cannot read properties of undefined (reading 'min') at ExtremeResamplerHelper.resetAndFillBasicNativeArgs (ExtremeResamplerHelper.js:178:54) at ExtremeResamplerHelper.needsResampling (ExtremeResamplerHelper.js:50:18) at BaseRenderableSeries.needsResampling (BaseRenderableSeries.js:935:37) at SciChartRenderer.resampleSeries (SciChartRenderer.js:65:17) at SciChartRenderer.prepareSeriesRenderData (SciChartRenderer.js:328:57) at SciChartRenderer.render (SciChartRenderer.js:144:35) at SciChartSurface.doDrawingLoop (SciChartSurface.js:707:35) at SciChartSurface.onRenderSurfaceDraw (SciChartSurface.js:1337:18) at RenderSurface.onRenderTimeElapsed (RenderSurface.js:37:14) at Object.Draw (createMaster.js:294:60)
Following this stacktrace at SciChartRenderer.resampleSeries (SciChartRenderer.js:65:17)
var rp = new ResamplingParams_1.ResamplingParams(seriesViewRect, rs, xAxis);
where
var ResamplingParams_1 = __webpack_require__(/*! ../Numerics/Resamplers/ResamplingParams */ "./node_modules/scichart/Charting/Numerics/Resamplers/ResamplingParams.js");
it looks like rp is not created correctly but I don't understand why?
Ps I've downloaded the package from git and didn't use NuGet. Also you can find js equivalent of this here https://github.com/ABTSoftware/SciChart.JS.Examples/blob/master/Examples/src/components/Examples/FeaturedApps/ScientificCharts/InteractiveWaterfallChart/index.tsx
Also you will need to add this line in your App.razor:
<script async src="_content/SciChartBlazor/SciChart/sciChartBlazorJson.js"></script>