Color mapping

20 Feb 20185 minutes to read

You can customize the colors of leaf nodes of the pivot tree map by using the color mapping support.

Color mapping is categorized into two different types as follows:

• Normal
• Range

You can color all the leaf nodes with the different colors by setting the color value of the rangeColorMapping property.

Normal color mapping

You can customize the nodes based on number of leaf items by using different color ranges. You can also define the color value range by using from and to properties.

The following code sample explains how to customize the pivot tree map appearance in Normal mode (i.e., differentiate color based on number of the leaf items in each header).

CSHTML

<! --Create a tag which acts as a container for PivotTreeMap--> 
<ej-pivot-treemap id="PivotTreeMap1" render-success="onTypeChange"></ej-pivot-treemap>

<script type="text/javascript">      
   function onTypeChange(args) {	
         treemapTarget = $('#PivotTreeMap1TreeMapContainer').data("ejTreeMap");
         treemapTarget.model.colorValuePath = "";
         treemapTarget.model.enableGradient = false;
         treemapTarget.model.showLegend = false;
         treemapTarget.model.legendSettings.leftLabel = "";
         treemapTarget.model.legendSettings.rightLabel = "";
         treemapTarget.model.rangeColorMapping = [];
	     treemapTarget.model.colorValuePath = "Index";
         treemapTarget.model.rangeColorMapping.push(
         { color: "#9de24f", from: "0", to: "0" },
         { color: "#a2e2fe", from: "1", to: "1" },
         { color: "#ffff66", from: "2", to: "2" },
         { color: "#FF0040", from: "3", to: "3" },
         { color: "#f6b53f", from: "4", to: "4" },
         { color: "#6FAAB0", from: "5", to: "5" },
         { color: "#C4C24A", from: "6", to: "6" }
         )
	  treemapTarget.refresh();
   } 
</script>

<!--Tooltip labels can be localized here-->
<script id="tooltipTemplate" type="application/jsrender">
    <div style="background:White; color:black; font-size:12px; font-weight:normal; border: 1px solid #4D4D4D; white-space: nowrap;border-radius: 2px; margin-right: 25px; min-width: 110px;padding-right: 5px; padding-left: 5px; padding-bottom: 2px ;width: auto; height: auto;">
        <div>Measure(s) : </div><div>Row : </div><div>Column : </div><div>Value : </div>
    </div>
</script>

Range color mapping

You can customize the nodes based on its value and color ranges by using the Range color. You can also define the color value range using from and to properties.

The following code sample explains how to customize the pivot tree map appearance in Range mode (i.e., differentiate color for leaf items based on values).

CSHTML

<script type="text/javascript">   
   function onTypeChange(args) {	
         treemapTarget = $('#PivotTreeMap1TreeMapContainer').data("ejTreeMap");
         treemapTarget.model.colorValuePath = "";
         treemapTarget.model.enableGradient = false;
         treemapTarget.model.showLegend = false;
         treemapTarget.model.legendSettings.leftLabel = "";
         treemapTarget.model.legendSettings.rightLabel = "";
         treemapTarget.model.rangeColorMapping = [];
	     treemapTarget.model.colorValuePath = "Value";
         treemapTarget.model.rangeColorMapping.push(
         { color: "#a2e2fe", from: "0", to: "10" },
         { color: "#9de24f", from: "11", to: "250" },
         { color: "#ffff66", from: "251", to: "1000" },
         { color: "#C4C24A", from: "1001", to: "3000" },
         { color: "#f6b53f", from: "3001", to: "5000" },
         { color: "#6FAAB0", from: "5001", to: "10000" },
         { color: "#FF0040", from: "10001", to: "20000" }
         )
	treemapTarget.refresh();   
   }
</script>