有没有办法使用chart.js绘制浮动矩形
我需要在折线图上画一个矩形。。有人请帮忙,我想在折线图上画一个浮动矩形。矩形的xy坐标是动态的&将作为变量传递,就像下面创建阵列的方式一样有没有办法使用chart.js绘制浮动矩形,chart.js,Chart.js,我需要在折线图上画一个矩形。。有人请帮忙,我想在折线图上画一个浮动矩形。矩形的xy坐标是动态的&将作为变量传递,就像下面创建阵列的方式一样 <html> <head> <title>Line Chart</title> <script src="Chart.js"></script> <meta http-equiv="refresh" content="1"/> </head>
<html>
<head>
<title>Line Chart</title>
<script src="Chart.js"></script>
<meta http-equiv="refresh" content="1"/>
</head>
<body>
<div style="width: 60%">
<canvas id="mycanvas" height="300" width="750" class="subcanvas"> </canvas>
</div>
<script>
var chrt1 = document.getElementById("mycanvas").getContext("2d");
chrt1.beginPath();
chrt1.lineWidth="20";
chrt1.strokeStyle="red";
chrt1.rect(200,200,50,50);
chrt1.stroke();
var lineOptions = {
animation:false,
pointDotRadius: 0,
responsive: false
};
var mmaxis = [];
var loadaxis = [];
mmaxis[0] = :="plotdb".xarray[0]:
mmaxis[1] = :="plotdb".xarray[1]:
mmaxis[2] = :="plotdb".xarray[2]:
mmaxis[3] = :="plotdb".xarray[3]:
mmaxis[4] = :="plotdb".xarray[4]:
mmaxis[5] = :="plotdb".xarray[5]:
mmaxis[6] = :="plotdb".xarray[6]:
mmaxis[7] = :="plotdb".xarray[7]:
mmaxis[8] = :="plotdb".xarray[8]:
mmaxis[9] = :="plotdb".xarray[9]:
mmaxis[10] = :="plotdb".xarray[10]:
mmaxis[11] = :="plotdb".xarray[11]:
mmaxis[12] = :="plotdb".xarray[12]:
mmaxis[13] = :="plotdb".xarray[13]:
mmaxis[14] = :="plotdb".xarray[14]:
mmaxis[15] = :="plotdb".xarray[15]:
mmaxis[16] = :="plotdb".xarray[16]:
mmaxis[17] = :="plotdb".xarray[17]:
mmaxis[18] = :="plotdb".xarray[18]:
mmaxis[19] = :="plotdb".xarray[19]:
mmaxis[20] = :="plotdb".xarray[20]:
loadaxis[0] = :="plotdb".yarray[0]:
loadaxis[1] = :="plotdb".yarray[1]:
loadaxis[2] = :="plotdb".yarray[2]:
loadaxis[3] = :="plotdb".yarray[3]:
loadaxis[4] = :="plotdb".yarray[4]:
loadaxis[5] = :="plotdb".yarray[5]:
loadaxis[6] = :="plotdb".yarray[6]:
loadaxis[7] = :="plotdb".yarray[7]:
loadaxis[8] = :="plotdb".yarray[8]:
loadaxis[9] = :="plotdb".yarray[9]:
loadaxis[10] = :="plotdb".yarray[10]:
loadaxis[11] = :="plotdb".yarray[11]:
loadaxis[12] = :="plotdb".yarray[12]:
loadaxis[13] = :="plotdb".yarray[13]:
loadaxis[14] = :="plotdb".yarray[14]:
loadaxis[15] = :="plotdb".yarray[15]:
loadaxis[16] = :="plotdb".yarray[16]:
loadaxis[17] = :="plotdb".yarray[17]:
loadaxis[18] = :="plotdb".yarray[18]:
loadaxis[19] = :="plotdb".yarray[19]:
loadaxis[20] = :="plotdb".yarray[20]:
var lineChartData = {
labels :mmaxis,
datasets : [
{
label: "Load Vs Disp",
fillColor : "rgba(255,255,255,0.2)",
strokeColor : "rgba(10,10,10,1)",
pointColor : "rgba(0,0,0,1)",
pointStrokeColor : "#0",
pointHighlightFill : "#0",
pointHighlightStroke : "rgba(0,0,0,10)",
data :loadaxis
}
]
}
window.onload = function()
{
window.chrt1
var chrt = document.getElementById("mycanvas").getContext("2d");
window.myFirstChart = new Chart(chrt).Line(lineChartData,lineOptions);
}
</script>
</body>
</html>
折线图
var chrt1=document.getElementById(“mycanvas”).getContext(“2d”);
chrt1.beginPath();
chrt1.lineWidth=“20”;
chrt1.strokeStyle=“红色”;
chrt1.rect(200200,50,50);
chrt1.stroke();
变量行选项={
动画:错,
点半径:0,
回答:错
};
var mmaxis=[];
var loadaxis=[];
mmaxis[0]=:=“plotdb”.xarray[0]:
mmaxis[1]=:=“plotdb”.xarray[1]:
mmaxis[2]=:=“plotdb”.xarray[2]:
mmaxis[3]=:=“plotdb”.xarray[3]:
mmaxis[4]=:=“plotdb”.xarray[4]:
mmaxis[5]=:=“plotdb”.xarray[5]:
mmaxis[6]=:=“plotdb”.xarray[6]:
mmaxis[7]=:=“plotdb”.xarray[7]:
mmaxis[8]=:=“plotdb”.xarray[8]:
mmaxis[9]=:=“plotdb”.xarray[9]:
mmaxis[10]=:=“plotdb”.xarray[10]:
mmaxis[11]=:=“plotdb”.xarray[11]:
mmaxis[12]=:=“plotdb”.xarray[12]:
mmaxis[13]=:=“plotdb”.xarray[13]:
mmaxis[14]=:=“plotdb”.xarray[14]:
mmaxis[15]=:=“plotdb”.xarray[15]:
mmaxis[16]=:=“plotdb”.xarray[16]:
mmaxis[17]=:=“plotdb”.xarray[17]:
mmaxis[18]=:=“plotdb”.xarray[18]:
mmaxis[19]=:=“plotdb”.xarray[19]:
mmaxis[20]=:=“plotdb”.xarray[20]:
loadaxis[0]=:=“plotdb”.yarray[0]:
loadaxis[1]=:=“plotdb”.yarray[1]:
loadaxis[2]=:=“plotdb”.yarray[2]:
loadaxis[3]=:=“plotdb”.yarray[3]:
loadaxis[4]=:=“plotdb”.yarray[4]:
loadaxis[5]=:=“plotdb”.yarray[5]:
loadaxis[6]=:=“plotdb”.yarray[6]:
loadaxis[7]=:=“plotdb”.yarray[7]:
loadaxis[8]=:=“plotdb”.yarray[8]:
loadaxis[9]=:=“plotdb”.yarray[9]:
loadaxis[10]=:=“plotdb”.yarray[10]:
loadaxis[11]=:=“plotdb”。yarray[11]:
loadaxis[12]=:=“plotdb”。yarray[12]:
loadaxis[13]=:=“plotdb”.yarray[13]:
loadaxis[14]=:=“plotdb”.yarray[14]:
loadaxis[15]=:=“plotdb”.yarray[15]:
loadaxis[16]=:=“plotdb”.yarray[16]:
loadaxis[17]=:=“plotdb”.yarray[17]:
loadaxis[18]=:=“plotdb”.yarray[18]:
loadaxis[19]=:=“plotdb”。yarray[19]:
loadaxis[20]=:=“plotdb”。yarray[20]:
变量lineChartData={
标签:mmaxis,
数据集:[
{
标签:“加载Vs显示”,
填充颜色:“rgba(255255,0.2)”,
strokeColor:“rgba(10,10,10,1)”,
pointColor:“rgba(0,0,0,1)”,
pointStrokeColor:#0“,
pointHighlightFill:“0”,
pointHighlightStroke:“rgba(0,0,0,10)”,
数据:loadaxis
}
]
}
window.onload=函数()
{
window.chrt1
var chrt=document.getElementById(“mycanvas”).getContext(“2d”);
window.myFirstChart=新图表(chrt).Line(lineChartData,lineOptions);
}
chart.js有一个名为chartjs-plugin-annotation.js的插件(也可以在bower上找到) 包含该js文件后,您可以执行以下操作:
var myChart = new Chart(document.getElementById("myChart"), {
type: 'bubble',
data: {
datasets:[
...
]
},
options:{
scales: {
yAxes: [{
...
}],
xAxes: [{
...
}],
},
annotation: {
annotations: [{
type: 'box',
// ID of the X scale to bind onto
xScaleID: 'x-axis-0',
// ID of the Y scale to bind onto
yScaleID: 'y-axis-0',
// Left edge of the box. in units along the x axis
xMin: 25,
// Right edge of the box
xMax: 40,
// Top edge of the box in units along the y axis
yMax: 20,
// Bottom edge of the box
yMin: 15,
// Stroke color
borderColor: 'red'
// Stroke width
borderWidth: 4,
}]
}
}
您可能想使用此处列出的设置,但这将为您绘制一个矩形 chart.js有一个名为chartjs-plugin-annotation.js的插件(也可以在bower上找到) 包含该js文件后,您可以执行以下操作:
var myChart = new Chart(document.getElementById("myChart"), {
type: 'bubble',
data: {
datasets:[
...
]
},
options:{
scales: {
yAxes: [{
...
}],
xAxes: [{
...
}],
},
annotation: {
annotations: [{
type: 'box',
// ID of the X scale to bind onto
xScaleID: 'x-axis-0',
// ID of the Y scale to bind onto
yScaleID: 'y-axis-0',
// Left edge of the box. in units along the x axis
xMin: 25,
// Right edge of the box
xMax: 40,
// Top edge of the box in units along the y axis
yMax: 20,
// Bottom edge of the box
yMin: 15,
// Stroke color
borderColor: 'red'
// Stroke width
borderWidth: 4,
}]
}
}
您可能想使用此处列出的设置,但这将为您绘制一个矩形