The d3.stackOrderAppearance() method orders the series such that the series having the earliest maximum value (i.e. series with its maximum value at the lowest index) is positioned at the bottom of the stack, and the series that has the latest maximum is placed on the top.
Syntax:
d3.stackOrderAppearance(series);
Parameters: This function accepts a single parameter as mentioned above and described below:
- series: This is the series based on the ordering of the keys to be ordered.
Return Value: This method returns no value.
Example: Ordering the stack using d3.stackOrderAppearance function.
HTML
<!DOCTYPE html><html><head>Â Â Â Â <meta charset="utf-8">Â
    <script src=    </script></head>Â
<body>    <h1 style="text-align: center; color: green;">        neveropen    </h1>Â
    <script>        var data = [          {letter: {a: 3840, b: 1920, c: 960, d: 400}},          {letter: {a: 1600, b: 1440, c: 960, d: 400}},          {letter: {a: 640, b: 960, c: 640, d: 400}},          {letter: {a: 320, b: 480, c: 640, d: 400}}        ];        var stack = d3.stack()            .keys(["a", "b", "c", "d"])            .value((d, key) => d.letter[key])            .order(d3.stackOrderAppearance);Â
        var series = stack(data);        console.log(series);Â
    </script></body>Â
</html> |
Output:
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