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"
</ 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"
</ 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 >
|
Output: