D3.js axis.tickValues() Function

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The d3.axis.tickValues() Function in D3.js is used to generate ticks at specific values. This function returns the current tick values, which defaults to null.

Syntax:

axis.tickValues([values])

Parameters: This function accepts the following parameters.

values: This parameter is used for ticks rather than using the scale’s automatic tick generator

Return Value: This function returns ticks at specific values.

Note: The explicit tick values take precedent over the tick arguments set by axis.tickArguments.

Below programs illustrate the d3.axis.tickValues() function in D3.js:

Example 1:

<!DOCTYPE html>  
<html>  
  
<head>  
    <title>  
        D3.js | D3.axis.tickValues() Function  
    </title>  
    <script type="text/javascript"
        src="https://d3js.org/d3.v4.min.js">  
    </script>  
      
    <style>  
        svg text {  
            fill: green;  
            font: 15px sans-serif;  
            text-anchor: center;  
        }  
    </style>  
</head>  
  
<body>  
    <script>  
        var width = 400, height = 400;  
        var svg = d3.select("body")  
            .append("svg")  
            .attr("width", width)  
            .attr("height", height);  
  
        var xscale = d3.scaleLinear()  
            .domain([0, 10])  
            .range([0, width - 60]);  
  
        var x_axis = d3.axisBottom(xscale) 
        .tickValues([2, 4, 6, 7]);  
  
        var xAxisTranslate = height / 2;  
  
        svg.append("g")  
            .attr("transform", "translate(50, "  
            + xAxisTranslate + ")")  
            .call(x_axis)  
    </script>  
</body>  
</html>

Output:

Example 2:

<!DOCTYPE html>  
<html>  
  
<head>  
    <title>  
        D3.js | D3.axis.tickValues() Function  
    </title>  
    <script type="text/javascript"
        src="https://d3js.org/d3.v4.min.js">  
    </script>  
      
    <style>  
        svg text {  
            fill: green;  
            font: 15px sans-serif;  
            text-anchor: center;  
        }  
    </style>  
</head>  
  
<body>  
    <script>  
        var width = 400, height = 400;  
        var svg = d3.select("body")  
            .append("svg")  
            .attr("width", width)  
            .attr("height", height);  
  
        var yscale = d3.scaleLinear()  
            .domain([0, 1])  
            .range([height - 50, 0]);  
  
        var y_axis = d3.axisLeft() 
        .scale(yscale).tickValues([ 0, 0.5, 1]);  
  
  
        svg.append("g")  
            .attr("transform", "translate(100, 20)")  
            .call(y_axis)  
    </script> 
</body>  
</html>