[D3] 2. Basics of SVG

1. svg should use 'fill' prop instead 'background-color'
2. svg width & height no need 'px'
3. attr(function(data_val, index){})
4. create svg, d3.select('selector').append('svg').attr('width', xxx).attr('height', xx)
5. svg should use 'rect' instead of 'div'

<!DOCTYPE html>

<html>

<head lang="en">

    <meta charset="UTF-8">

    <title></title>

    <script src="../ventor/d3.min.js"></script>

    <style type="text/css">

        body

        {

            padding-top: 50px;

            padding-left: 100px;

        }

        #chartArea {

            width: 400px;

            height: 300px;

            background-color: #CCC;

        }

        .bar

        {

            display: inline-block;

            width: 20px;

            height: 75px; /* Gets overriden by D3-assigned height below */

            margin-right: 2px;

            fill: teal; /* SVG doesn't have background prop, use fill instead*/

            z-index:99;

        }

    </style>

</head>

<body>

<section id="chartArea"></section>

<script>

    var dataset = [3,5,7,9,4,6];

    var svg = d3.select('#chartArea').append('svg')

            .attr('width', 400)

            .attr('height', 300); //svg deosn't need 'px'

    svg.selectAll('div')

            .data(dataset)

            .enter()

            .append('rect')// svg doesn't have div, use rect instead

            .attr('class', "bar")

            .attr('width', 20)

            .attr('x', function(each_data, index){

                return index * 22;

            })

            .attr('y', function(each_data){

                return 300-each_data*10;

            })

            .attr('height', function(each_data, i){

                return each_data * 10;  // svg doesn't have 'style'

            });

</script>

<!--

    1. svg should use 'fill' prop instead 'background-color'

    2. svg width & height no need 'px'

    3. attr(function(data_val, index){})

    4. create svg, d3.select('selector').append('svg').attr('width', xxx).attr('height', xx)

    5. svg should use 'rect' instead of 'div'

    -->

</body>

</html>

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[D3] 2. Basics of SVG

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