Rendering mode
21 Dec 20224 minutes to read
Heat map can be displayed using Canvas
or Scalable Vector Graphics (SVG)
rendering logic to improve the initial load performance and scalability. Heat map can also be automatically switched between Canvas
and SVG
modes based on dataset size. You can enable this mode by setting the renderingMode
property to Auto
.
NOTE
If the
Auto
mode is enabled in the heat map and there are more than 10,000 data points, then the heat map will be rendered in aCanvas
mode; Otherwise, the heat map will be rendered in aSVG
mode.
@using Syncfusion.EJ2;
@Html.EJS().HeatMap("container").TitleSettings(ts =>
ts.Text("Sales Revenue per Employee (in 1000 US$)").TextStyle(ViewBag.textStyle)).XAxis(xAxis =>
xAxis.Labels(ViewBag.xLabels)).YAxis(yaxis =>
yaxis.Labels(ViewBag.yLabels)).CellSettings(cs =>
cs.ShowLabel(true)).RenderingMode(Syncfusion.EJ2.HeatMap.DrawType.SVG).ShowTooltip(true).DataSource(ViewBag.dataSource).Render()
public ActionResult RenderingMode()
{
ViewBag.textStyle = new
{
size= "15px",
fontWeight= "500",
fontStyle= "Normal",
fontFamily= "Segoe UI"
};
string[] xlabels = new string[12] { "Nancy", "Andrew", "Janet", "Margaret", "Steven", "Michael", "Robert", "Laura", "Anne", "Paul", "Karin", "Mario" };
ViewBag.xLabels = xlabels;
string[] yLabels = new string[6] { "Mon", "Tues", "Wed", "Thurs", "Fri", "Sat" };
ViewBag.yLabels = yLabels;
ViewBag.dataSource = GetDataSource();
return View();
}
private int[,] GetDataSource()
{
int[,] data = new int[,]
{
{73, 39, 26, 39, 94, 0},
{93, 58, 53, 38, 26, 68},
{99, 28, 22, 4, 66, 90},
{14, 26, 97, 69, 69, 3},
{7, 46, 47, 47, 88, 6},
{41, 55, 73, 23, 3, 79},
{56, 69, 21, 86, 3, 33},
{45, 7, 53, 81, 95, 79},
{60, 77, 74, 68, 88, 51},
{25, 25, 10, 12, 78, 14},
{25, 56, 55, 58, 12, 82},
{74, 33, 88, 23, 86, 59}
};
return data;
}