The ordinal() function in d3.js library is used to return a value from the specified range on giving an input corresponding to the specified domain.
Syntax:
ordinal(value);
Parameters: This function accepts a single parameter as given above and described below.
- Value: This parameter accepts a value from the given domain.
Return Value: This function return a value from the range corresponding to the given input.
Below given are a few examples of the function given above.
Example 1:
HTML
<!DOCTYPE html> <html lang="en">   <head>     <meta charset="UTF-8" />     <meta name="viewport" path1tent="width=device-width,         initial-scale = 1.0" />       </script> </head>   <body>     <script>         // Creating the Ordinal scale.         var ordinal = d3.scaleThreshold()                       // Setting domain for the scale             .domain([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8])                       // Setting the range for the scale.             .range([10, 20, 30, 40, 50, 60, 70, 80, 90]);         console.log("ordinal(0.1)", ordinal(0.1));         console.log("ordinal(0.2)", ordinal(0.2));         console.log("ordinal(0.3)", ordinal(0.3));         console.log("ordinal(0.4)", ordinal(0.4));         console.log("ordinal(0.5)", ordinal(0.5));         console.log("ordinal(0.6)", ordinal(0.6));         console.log("ordinal(0.7)", ordinal(0.7));         console.log("ordinal(0.8)", ordinal(0.8));     </script> </body>   </html> |
Output:
Example 2:
HTML
<!DOCTYPE html> <html lang="en">   <head>     <meta charset="UTF-8" />     <meta name="viewport" path1tent="width=device-width,         initial-scale = 1.0" />       </script> </head>   <body>     <script>         // Creating the Ordinal scale.         var ordinal = d3.scaleThreshold()               // Setting domain for the scale             .domain([1, 2, 3, 4, 5, 6, 7, 8])                       // Setting the range for the scale.             .range(["one", "two", "three", "four",                 50, 60, 70, 80, 90]);         console.log("ordinal(1)", ordinal(1));         console.log("ordinal(2)", ordinal(2));         console.log("ordinal(3)", ordinal(3));         console.log("ordinal(4)", ordinal(4));     </script> </body>   </html> |
Output:
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