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Pie with Resolved Label Overlapping

Documentation

In the PieChart, series may include a large number of points, which may result in point label overlapping. This demo illustrates the resolveLabelOverlapping property that allows you to specify how the component must behave when point labels overlap.

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Backend API
<div id="chart-demo"> @(Html.DevExtreme().PieChart() .ID("pie-chart") .Palette(VizPalette.Bright) .Title("Olympic Medals in 2008") .Margin(m => m.Bottom(20)) .Legend(l => l.Visible(false)) .Animation(a => a.Enabled(false)) .ResolveLabelOverlapping(ShiftLabelOverlap.Shift) .Export(e => e.Enabled(true)) .Series(s => s .Add() .ArgumentField("Country") .ValueField("Medals") .Label(l => l .Visible(true) .CustomizeText(@<text> function(arg) { return arg.argumentText + " (" + arg.percentText + ")"; } </text>) ) ) .DataSource(new[] { new { Country = "USA", Medals = 112 }, new { Country = "China", Medals = 100 }, new { Country = "Russia", Medals = 60 }, new { Country = "Britain", Medals = 49 }, new { Country = "Australia", Medals = 46 }, new { Country = "France", Medals = 43 }, new { Country = "Germany", Medals = 41 }, new { Country = "South Korea", Medals = 32 }, new { Country = "Cuba", Medals = 29 }, new { Country = "Italy", Medals = 27 }, new { Country = "Japan", Medals = 25 }, new { Country = "Ukraine", Medals = 22 }, new { Country = "Canada", Medals = 20 }, new { Country = "Spain", Medals = 19 } }) ) <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Label Overlapping Resolution Mode</span> @(Html.DevExtreme().SelectBox() .DataSource(new[] { ShiftLabelOverlap.Shift, ShiftLabelOverlap.Hide, ShiftLabelOverlap.None }) .Value(ShiftLabelOverlap.Shift) .InputAttr("aria-label", "Resolution Mode") .OnValueChanged(@<text> function (e) { $("#pie-chart").dxPieChart("option", "resolveLabelOverlapping", e.value); } </text>) ) </div> </div> </div>
using DevExtreme.AspNet.Data; using DevExtreme.AspNet.Mvc; using DevExtreme.MVC.Demos.Models.SampleData; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Linq; using System.Web.Mvc; namespace DevExtreme.MVC.Demos.Controllers { public class ChartsController : Controller { public ActionResult PieWithResolvedLabelOverlapping() { return View(); } } }
.options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .option { margin-top: 10px; display: flex; align-items: center; } .caption { font-size: 18px; font-weight: 500; } .option > span { margin-right: 10px; } .option > .dx-widget { display: inline-block; vertical-align: middle; }