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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