我正在尝试使用chart.js库创建折线图,我的目标是图表应该是单行,其下的区域不得填充。
但不管我放的颜色是什么,我都没有看到它变得清新。
这是生成图表的JS。
<table style="width: 100%">
<tr>
<td style="width: 50%; text-align: center">
<canvas id="canvasForLineChart" height="200" width="400">Chart is Loading...</canvas>
</td>
</tr>
</table>
<script type="text/javascript">
////////////////////////////////////////////////////////////////////////////////////////////////////////
//Line Chart JSON Config (Line Chart Has fixed 1 data series here)
var lineChartData = {
//labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
fill: false,
lineTension: 0.1,
//backgroundColor: "#000000",
//borderColor: "rgba(75,192,192,1)",
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
//pointBorderColor: "rgba(75,192,192,1)",
pointBackgroundColor: "#fff",
pointBorderWidth: 1,
pointHoverRadius: 5,
//pointHoverBackgroundColor: "rgba(75,192,192,1)",
//pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 2,
pointRadius: 1,
pointHitRadius: 10,
data: [0]
}
]
}
//LineChart Update method
function UpdateLineChart(data) {
//Set data returned from Server
//lineChartData.datasets[0].fillColor = data.colorString;
lineChartData.datasets[0].data = data.lineChartData;
lineChartData.labels = data.hora;
//Update the Pie Chart
var canvasForLineChart = document.getElementById("canvasForLineChart");
var context2DLine = canvasForLineChart.getContext("2d");
new Chart(context2DLine).Line(lineChartData);
}
</script>
但我的结果是:
我想要这样的事情:
答案 0 :(得分:1)
backgroundColor 'rgba(0,0,0,0.1)'
那应该将你的不透明度设置为.1,你可以归零,但我应该测试它。我看到你注释掉了你设置的1个不透明度的边框颜色,这个颜色是实心的。
答案 1 :(得分:1)
fill: false
应该做什么工作,你在哪里调用UpdateLineChart函数?
答案 2 :(得分:1)
根据Chart JS Docs,您需要指定:
fill: false
在图表选项中。您的代码看起来像这样:
function UpdateLineChart(data) {
//Set data returned from Server
lineChartData.datasets[0].data = data.lineChartData;
lineChartData.labels = data.hora;
//Update the Pie Chart
var canvasForLineChart = document.getElementById("canvasForLineChart");
var context2DLine = canvasForLineChart.getContext("2d");
var myChart = new Chart(context2DLine, {
data: {
datasets: [{
fill: false,
lineTension: 0.1,
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
pointBackgroundColor: "#fff",
pointBorderWidth: 1,
pointHoverRadius: 5,
pointHoverBorderWidth: 2,
pointRadius: 1,
pointHitRadius: 10,
data: [0]
}]
}
});
}