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D3.js time.tickFormat() Function
  • Last Updated : 23 Aug, 2020

The time.tickFormat() function in D3.js is used to return a time format function suitable for displaying tick values. It returns the default time format when the specifier is not specified.

Syntax:

time.tickFormat( count, specifier )

Parameters: This function accepts two parameters as given above and described below:

  • count: It specifies the number of tick values.
  • specifier: It is the string that will be used as the specifier. It is of the format type “s”.

Return Values: This function does not return anything.

Below programs illustrate the time.tickFormat() function in D3.js:



Example 1:

HTML




<!DOCTYPE html>
<html>
  
<head>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    </script>
    <script src=
    </script>
    <script src=
    </script>
</head>
  
<body>
    <h1 style="color: green">GeeksforGeeks</h1>
  
    <p>time.tickFormat() Function </p>
  
    <script>
        var time = d3.scaleTime()
  
            // Specify the domain and range
            .domain([2001 - 01 - 01, 2005 - 01 - 02])
            .range([1, 100]);
  
        var ticks = time.ticks(1);
  
        // Specify the format of the ticks
        var tickFormat = time.tickFormat(1, "%Y-%m-%d ");
  
        document.write("<h3>" +
            ticks.map(tickFormat) + "</h3>");
    </script>
</body>
  
</html>

Output:

Example 2:

HTML




<!DOCTYPE html>
<html>
  
<head>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    </script>
    <script src=
    </script>
    <script src=
    </script>
</head>
  
<body>
    <h1 style="color: green">GeeksforGeeks</h1>
  
    <p>time.tickFormat() Function </p>
  
    <script>
        var time = d3.scaleTime()
  
            // Specify the domain and range
            .domain([2001 - 01 - 01, 2005 - 01 - 02])
            .range([1, 100]);
  
        var ticks = time.ticks(1);
  
        // Specify the format of the ticks
        var tickFormat = time.tickFormat(0, "%I %p");
  
        document.write("<h3>" +
            ticks.map(tickFormat) + "</h3>");
    </script>
</body>
  
</html>

Output:

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