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Point Charts

Custom Axis Position

The Chart widget initially displays axes along pane borders. Several other predefined axis layout options are available. In this demo, the customPosition option is used to move each axis, so that it is displayed on the specified value of another axis. When you position the argument axis, use values from the value axis (in the same type and format) and vice versa.

Regardless of which automatic axis layout type you use, the Chart Control allows you to apply manual offsets. Specify the offset option in pixels to keep the axis position unchanged when users scroll or zoom the Chart data. The offset option shifts the axis from the specified position as follows:

  • If the axis is horizontal, a negative offset shifts the axis to the top, a positive offset shifts it to the bottom.

  • If the axis is vertical, a negative offset shifts the axis to the left, a positive offset shifts it to the right.

In this demo, you can use controls under the Chart to change the customPosition and offset options for both axes.

@(Html.DevExtreme().Chart() .ID("chart") .CommonSeriesSettings(s => s.Type(SeriesType.Scatter)) .Series(s => { s.Add().ArgumentField("x1").ValueField("y1"); s.Add().ArgumentField("x2").ValueField("y2").Point(p => p .Symbol(PointSymbol.TriangleDown) ); }) .ArgumentAxis(a => a .CustomPosition(0) .Offset(0) .VisualRange(new double[] { -20, 20 }) ) .ValueAxis(a => a.Add() .CustomPosition(0) .Offset(0) .EndOnTick(false) .VisualRange(new double[] { -20, 20 }) ) .Legend(l => l .Visible(false) ) .DataSource(Model) ) <div class="options"> <div class="caption">Options</div> <div class="common"> <div class="block left"> <span>Argument Axis</span> <div class="option"> <span>Custom position:</span> @(Html.DevExtreme().NumberBox() .Value(0) .ShowSpinButtons(true) .OnValueChanged(@<text> function(e) { var chart = $("#chart").dxChart("instance"); chart.option("argumentAxis.customPosition", e.value); } </text>) ) </div> <div class="option"> <span>Offset:</span> @(Html.DevExtreme().NumberBox() .Value(0) .ShowSpinButtons(true) .OnValueChanged(@<text> function(e) { var chart = $("#chart").dxChart("instance"); chart.option("argumentAxis.offset", e.value); } </text>) ) </div> </div> <div class="block right"> <span>Value Axis</span> <div class="option"> <span>Custom position:</span> @(Html.DevExtreme().NumberBox() .Value(0) .ShowSpinButtons(true) .OnValueChanged(@<text> function(e) { var chart = $("#chart").dxChart("instance"); chart.option("valueAxis[0].customPosition", e.value); } </text>) ) </div> <div class="option"> <span>Offset:</span> @(Html.DevExtreme().NumberBox() .Value(0) .ShowSpinButtons(true) .OnValueChanged(@<text> function(e) { var chart = $("#chart").dxChart("instance"); chart.option("valueAxis[0].offset", e.value); } </text>) ) </div> </div> </div> </div>
using DevExtreme.AspNet.Data; using DevExtreme.AspNet.Mvc; using DevExtreme.NETCore.Demos.Models; using DevExtreme.NETCore.Demos.Models.SampleData; using Microsoft.AspNetCore.Mvc; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Linq; namespace DevExtreme.NETCore.Demos.Controllers { public class ChartsController : Controller { public ActionResult AxisCustomPosition() { return View(SampleData.GetDataForCustomPosition()); } } }
using System; using System.Collections.Generic; namespace DevExtreme.NETCore.Demos.Models.SampleData { public partial class SampleData { public static IEnumerable<object> GetDataForCustomPosition() { var rnd = new Random(); Nullable<int> x1 = null; Nullable<int> x2 = null; Nullable<int> y1 = null; Nullable<int> y2 = null; int i; List<object> ds = new List<object>(); for(i = 0; i < 20; i++) { x1 = rnd.Next(5, 15); y1 = rnd.Next(5, 15); ds.Add(new { x1 = x1, y1 = y1, x2 = x2, y2 = y2 }); } for(i = 0; i < 20; i++) { x2 = rnd.Next(5, 15); y2 = rnd.Next(-15, -5); ds.Add(new { x1 = x1, y1 = y1, x2 = x2, y2 = y2 }); } for(i = 0; i < 20; i++) { x2 = rnd.Next(-15, -5); y2 = rnd.Next(5, 15); ds.Add(new { x1 = x1, y1 = y1, x2 = x2, y2 = y2 }); } for(i = 0; i < 20; i++) { x1 = rnd.Next(-15, -5); y1 = rnd.Next(-15, -5); ds.Add(new { x1 = x1, y1 = y1, x2 = x2, y2 = y2 }); } return ds.ToArray(); } } }
.options { padding: 20px; margin-top: 20px; background-color: rgba(191, 191, 191, 0.15); } .option { margin-top: 10px; overflow: auto; } .option > span { margin-right: 20px; margin-top: 6px; float: left; } .caption { font-size: 18px; font-weight: 700; } .option > .dx-numberbox { width: 90px; float: right; } .common { width: 488px; } .block { vertical-align: middle; margin-top: 10px; } .left { display: inline-block; } .right { float: right; } .block > span { font-size: 18px; font-weight: 500; }