d3.scale.linear()
<!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 = [45,59,17,29,46,68], w = 400, h = 300;
var svg = d3.select(‘#chartArea‘).append(‘svg‘)
.attr(‘width‘, w)
.attr(‘height‘, h); //svg deosn‘t need ‘px‘
var yScale = d3.scale.linear()
.domain([0, 68]) // The domain which y can access from min to max
.range([0, h]);
svg.selectAll(‘div‘)
.data(dataset)
.enter()
.append(‘rect‘)// svg doesn‘t have div, use rect instead
.attr(‘class‘, "bar")
.attr(‘width‘, 40)
.attr(‘x‘, function(each_data, index){
return index*70;
})
.attr(‘y‘, function(each_data){
return h-yScale(each_data);
})
.attr(‘height‘, function(each_data, i){
return yScale(each_data);
});
</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>
时间： 2024-10-26 03:54:48