如何使Chart JS中的两行变粗 [英] How can I make two of my lines in Chart JS thicker
问题描述
我已经使用Chart JS创建了一个图表,您可以在我的小提琴中看到。此图表中有三行。我希望橙色和黄色线比现在更厚。绿色的虚线很好。
I have made a chart with Chart JS, as you can see in my fiddle. There are three lines in this chart. I want to have the orange and yellow line to be thicker than it is right now. The green dotted line is good as it is.
我已经四处寻找并试了一些东西。但我还没有找到合适的解决方案。我希望我的问题很清楚,有人可以帮我解决这个问题。
I've searched around, and tried some things. But I haven't found the right solution yet. I hope that my question is clear, and that someone can help me with this.
HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.6/Chart.min.js" charset="utf-8"></script>
<canvas id="canvas2"></canvas>
JavaScript
Chart.defaults.global.legend.display = false;
var lineChartData = {
labels: ['20°', '30°', '40°', '50°', '60°', '70°', '80°'],
datasets: [{
data: [null, null, null, 400, 320, 220, 90],
pointBorderColor: "rgba(75,192,192,1)",
pointBackgroundColor: "#fff",
borderColor: '#FFEC8B',
pointBorderWidth: 0,
pointHoverRadius: 0,
pointHoverBackgroundColor: "rgba(75,192,192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 0,
lineWidth: 100,
pointRadius: 0,
pointHitRadius: 0,
},{
data: [550, 520, 470, 400, null, null, null],
borderColor: '#ff8800',
pointBorderWidth: 0,
pointHoverRadius: 0,
pointHoverBackgroundColor: "rgba(75,192,192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 0,
pointRadius: 0,
pointHitRadius: 0,
},
{
data: [220, 220, 220, 220, 220, 220, 220],
borderColor: '#008080',
borderDash: [10, 10],
pointBorderWidth: 0,
pointHoverRadius: 0,
pointHoverBackgroundColor: "rgba(75,192,192,1)",
pointHoverBorderColor: "rgba(220,220,220,1)",
pointHoverBorderWidth: 0,
pointRadius: 0,
pointHitRadius: 0,
}
]
};
var ctx = document.getElementById("canvas2").getContext("2d");
var myChart = new Chart(ctx, {
type: "line",
beginAtZero: true,
scaleOverride:true,
scaleSteps:9,
scaleStartValue:0,
lineWidth: 100,
scaleStepWidth:100,
data: lineChartData,
options: {
elements: {
line: {
fill: false
}
},
style: {
strokewidth: 10
},
scales: {
xAxes: [{
display: true,
scaleLabel: {
display: true,
labelString: 'Temperatuur - Celcius'
}
}],
yAxes: [{
display: true,
ticks: {
max: 600,
min: 0,
stepSize: 200,
userCallback: function(value, index, values) {
value = value.toString();
value = value.split(/(?=(?:...)*$)/);
value = value.join('.');
return value + '%';
}
},
scaleLabel: {
display: true,
labelString: 'Rendement'
}
}]
}
}
})
推荐答案
你接近它了!
实际上,你必须编辑的属性不是 lineWidth
但是 borderWidth
(在 Chart.js文档的第一个示例,您可以看到该属性)。
如 <$ c的MDN文档示例 $ c> lineTo :
You were close to it !
Actually, the attribute you have to edit is not lineWidth
but borderWidth
(in the first example of Chart.js docs, you can see the attribute).
As stated in the example of the MDN doc of
lineTo
:
使用beginPath()开始绘制路径单击,使用moveTo()移动笔并使用stroke()方法实际绘制直线。
Use the beginPath() to begin a path to draw a line on, move the pen with moveTo() and use the stroke() method to actually draw the line.
该行基本上是一个宽度为 0
的矩形。然后使用矩形边框宽度计算线条的宽度。
所以你只需要这样编辑你的数据集:
The line is basically a rectangle with a width of 0
. Then the width of the line is calculated using the rectangle border width.
So you simply have to edit your dataset this way :
datasets: [{
// ...
borderWidth: 1 // and not lineWidth
// ...
}]
我还有更新你的小提琴编辑,你可以看到它现在正在工作。
I also have updated your fiddle with the edit, and you can see that it is working now.
这篇关于如何使Chart JS中的两行变粗的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!