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Charts

Discrete Axis Zooming and Scrolling

Documentation

Discrete data support is one of many strengths of the Chart widget. In this example, you can zoom data in the Chart using another DevExtreme HTML5 widget, the RangeSelector.

<div id="chart-demo"> @{ var dataSource = new List<object> { new { arg = "Inner Core", Si = 7.35, Fe = 79.39, Ni = 5.2, S = 2.3, O = 4.1 }, new { arg = "Outer Core", Si = 7.33, Fe = 78.56, Ni = 5.2, S = 2.7, O = 4.2 }, new { arg = "Lower Mantle", Si = 21.5, Fe = 5.8, O = 44.8, Mg = 22.8, Al = 2.2, Ca = 2.3, Na = 0.3, K = 0.03 }, new { arg = "Upper Mantle", Si = 28.1, Mg = 23.2, Fe = 4.3, Al = 1.2, Ca = 2.2, O = 40.3, Na = 0.2 }, new { arg = "Lower Crust", O = 46.6, Si = 27.7, Al = 8.1, Fe = 5, Ca = 3.6, Na = 2.8, K = 2.6, Mg = 1.5 }, new { arg = "Upper Crust", O = 47, Si = 29.5, Al = 8.05, Fe = 4.66, Ca = 2.96, Na = 2.5, K = 2.5, Mg = 1.87 } }; } @(Html.DevExtreme().Chart() .ID("zoomedChart") .Palette(VizPalette.Soft) .EqualBarWidth(false) .Title("The Chemical Composition of the Earth Layers") .ValueAxis(a => a .Add() .Label(l => l .CustomizeText(@<text> function() { return this.valueText + "%"; } </text>))) .DataSource(dataSource) .Series(s => { s.Add().Name("Si").ValueField("Si"); s.Add().Name("Fe").ValueField("Fe"); s.Add().Name("Ni").ValueField("Ni"); s.Add().Name("S").ValueField("S"); s.Add().Name("O").ValueField("O"); s.Add().Name("Mg").ValueField("Mg"); s.Add().Name("Al").ValueField("Al"); s.Add().Name("K").ValueField("K"); s.Add().Name("Na").ValueField("Na"); }) .CommonSeriesSettings(s => s.Type(SeriesType.Bar)) .Legend(l => l .Border(b => b.Visible(true)) .Visible(true) .VerticalAlignment(VerticalEdge.Top) .HorizontalAlignment(HorizontalAlignment.Right) .Orientation(Orientation.Horizontal) ) ) @(Html.DevExtreme().RangeSelector() .Size(s => s.Height(120)) .Margin(m => m.Left(10)) .Scale(s => s.MinorTickCount(1)) .DataSource(dataSource) .Chart(c => c .Palette(VizPalette.Soft) .CommonSeriesSettings(s => s.Type(SeriesType.Bar)) .EqualBarWidth(false) .Series(s => { s.Add().Name("Si").ValueField("Si"); s.Add().Name("Fe").ValueField("Fe"); s.Add().Name("Ni").ValueField("Ni"); s.Add().Name("S").ValueField("S"); s.Add().Name("O").ValueField("O"); s.Add().Name("Mg").ValueField("Mg"); s.Add().Name("Al").ValueField("Al"); s.Add().Name("K").ValueField("K"); s.Add().Name("Na").ValueField("Na"); })) .Behavior(b => b.CallValueChanged(ValueChangedCallMode.OnMoving)) .OnValueChanged(@<text> function (e) { $("#zoomedChart").dxChart("instance").zoomArgument(e.value[0], e.value[1]); } </text>) ) </div>
using DevExtreme.AspNet.Data; using DevExtreme.AspNet.Mvc; using DevExtreme.MVC.Demos.Models; using DevExtreme.MVC.Demos.Models.SampleData; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Web.Mvc; namespace DevExtreme.MVC.Demos.Controllers { public class ChartsController : Controller { public ActionResult DiscreteAxisZoomingAndScrolling() { return View(); } } }
#zoomedChart { margin-bottom: 20px; }