The threshold.invertExtent() function in d3.js is used to return the extent of the values in the specified domain.
Syntax:
threshold.invertExtent(value);
Parameters: This function accepts a single parameter as given above and described below:
- value: This parameter takes a value from the given range.
Return Values: This function returns a value from the domain corresponding to the given input value.
Below given are a few examples of the function given above.
Example 1:
<!DOCTYPE html> <html lang="en"> <head>     <meta charset="UTF-8" />     <meta name="viewport"        path1tent="width=device-width,         initial-scale=1.0"/>     <script src=     </script>     <script src=     </script>     <script src=     </script>     <script src=     </script> </head> <body>     <h2 style="color:green;">Geeks for neveropen</h2>     <p>threshold.invertExtent() Function </p>     <script>         var threshold = d3.scaleThreshold()                     // Setting domain for the scale.                     .domain([1, 2, 3, 4])                     .range(["red", "green", "blue"]);         let val1=threshold.invertExtent("green");         let val2=threshold.invertExtent("blue");         document.write("<h4>["+val1+"]</h4>");         document.write("<h4>["+val2+"]</h4>");     </script> </body> </html> |
Output:
Example 2:
<!DOCTYPE html> <html lang="en"> <head>     <meta charset="UTF-8" />     <meta name="viewport"        path1tent="width=device-width,         initial-scale=1.0"/>     <script src=     </script>     <script src=     </script>     <script src=     </script>     <script src=     </script> </head> <body>     <h2 style="color:green;">Geeks for neveropen</h2>     <p>threshold.invertExtent() Function </p>     <script>         var threshold = d3.scaleThreshold()                     // Setting domain for the scale.                     .domain([1, 2, 3, 4])                     .range([10, 20, 30, 40, 50]);         let val1=threshold.invertExtent(10);         let val2=threshold.invertExtent(50);         let val3=threshold.invertExtent(20);         document.write("<h4>["+val1+"]</h4>");         document.write("<h4>["+val2+"]</h4>");         document.write("<h4>["+val3+"]</h4>");     </script> </body> </html> |
Output:
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