Chart.js-使用多个标签显示多个折线图
我需要使用chart.js绘制一个有两条线的图表。Chart.js-使用多个标签显示多个折线图,chart.js,labels,linechart,Chart.js,Labels,Linechart,我需要使用chart.js绘制一个有两条线的图表。 每一行都有不同的标签集。 即 图1： 1 -> 2 2 -> 4 3 -> 8 4 -> 16 图2： 1 -> 3 3 -> 4 4 -> 6 6 -> 9 以下示例显然不起作用，因为它使用了图表1中的标签。但是有可能通过Chart.js实现这一点吗 var config = { type: 'line', data: {
每一行都有不同的标签集。
即 图1：
1 -> 2
2 -> 4
3 -> 8
4 -> 16
1 -> 3
3 -> 4
4 -> 6
6 -> 9
var config = {
type: 'line',
data: {
labels: [1,2,3,4,5],
datasets: [{
label: 'Chart 1',
data: [2,4,8,16],
}, {
label: 'Chart 2',
data: [3,4,6,9],
}]
},
（即[（1->2）、（2->4）、（3->8）…]
对于每个图表和库，都将匹配所有内容 谢谢 编辑：按要求提供详细样本：
var配置={
键入：“行”，
数据：{
标签：[1,2,3,4,5]，
数据集：[{
标签：“图表1”，
数据：[2,4,8,16]，
}, {
标签：“图表2”，
数据：[3,4,6,9]，
}]
},
选项：{
斯潘：是的，
回答：是的，
标题：{
显示：对，
文本：“Chart.js折线图”
},
工具提示：{
模式：“索引”，
交集：错，
},
悬停：{
模式：“最近的”，
交集：对
},
比例：{
xAxes：[{
显示：对，
scaleLabel：{
显示：对，
标签字符串：“标签”
}
}],
雅克斯：[{
显示：对，
scaleLabel：{
显示：对，
标签字符串：“值”
},
滴答声：{
民:1,，
最高：10，
}
}]
}
}
};
window.onload=函数（）{
var ctx=document.getElementById（'canvas'）.getContext（'2d'）；
window.myLine=新图表（ctx，配置）；
}；
散点显示行：true行var ctx=document.getElementById（“myChart”）；
var myChart=新图表（ctx{
键入：“散布”，
数据：{
数据集：[
{
标签：“图表1”，
数据：[{x:1，y:2}，{x:2，y:4}，{x:3，y:8}，{x:4，y:16}]，
秀行：没错，
填充：假，
边框颜色：“rgba（0，200，0，1）”
},
{
标签：“图表2”，
数据：[{x:1，y:3}，{x:3，y:4}，{x:4，y:6}，{x:6，y:9}]，
秀行：没错，
填充：假，
边框颜色：“rgba（200,0,0,1）”
}
]
},
选项：{
工具提示：{
模式：“索引”，
交集：错，
},
悬停：{
模式：“最近的”，
交集：对
},
比例：{
雅克斯：[{
滴答声：{
贝吉纳泽罗：是的
}
}]
},
}
})；这段代码的作用是，它使用chart.js显示多线图
//DataContract for Serializing Data - required to serve in JSON format
[DataContract]
public class LabelPoint
{
//Explicitly setting the name to be used while serializing to JSON.
[DataMember(Name = "label")]
public string Label { get; set; }
public DataPoint DataPoint { get; set; }
}
[DataContract]
public class DataPoint
{
[DataMember(Name = "x")]
public List<string> X { get; set; }
//Explicitly setting the name to be used while serializing to JSON.
[DataMember(Name = "y")]
public List<string> Y { get; set; }
}
<canvas id="myChart"></canvas>
<script>
$(document).ready(function () {
// Get the data from the controller using viewbag
// so the data looks something like this [ { Label : "ABC" , DataPoint :[ { X: '222' , Y :60 } ] } ]
var data = @Html.Raw(Json.Encode(ViewBag.DataPoints));
// declare empty array
var dataSet = []; var qty= []; var dates= [];
// loop through the data and get the Label as well as get the created dates and qty for the array of object
for (var i = 0; i < data.length; i++) {
qty.push(data[i].DataPoint.Y);
for (var d = 0; d < data[i].DataPoint.X.length; d++) {
// we're setting this on the X- axis as the label so we need to make sure that we get all the dates between searched dates
dates.push(data[i].DataPoint.X[d]);
}
// we create an array of object, set the Lable which will display LocationName, The data here is the Quantity
dataSet.push(
{
label: data[i].Label,
data: data[i].DataPoint.Y,
fill: false,
borderColor: poolColors(qtyInLocations.length),
pointBorderColor: "black",
pointBackgroundColor: "white",
lineTension: 0.1
}
);
}
// this is the options to set the Actual label like Date And Quantity
var options = {
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: "Date",
fontSize: 20
},
}],
yAxes: [{
ticks: {
beginAtZero:true
},
scaleLabel: {
display: true,
labelString: 'Quantity',
fontSize: 20
}
}]
}
};
// we need to remove all duplicate values from the CreatedDate array
var uniq = [ ...new Set(dates) ];
// get the canvas
var ctx = document.getElementById("myChart").getContext('2d');
// build the chart
var myChart = new Chart(ctx, {
type: 'line',
data: {
labels: uniq,
datasets:dataSet
},
options: options
});
});
/// will get get random colors each time
function dynamicColors() {
var r = Math.floor(Math.random() * 255);
var g = Math.floor(Math.random() * 255);
var b = Math.floor(Math.random() * 255);
return "rgba(" + r + "," + g + "," + b + ", 0.5)";
}
/// will display random colors each time
function poolColors(a) {
var pool = [];
for(i = 0; i < a; i++) {
pool.push(dynamicColors());
}
return pool;
}
</script>
//DataContract for Serializing Data - required to serve in JSON format
[DataContract]
public class LabelPoint
{
//Explicitly setting the name to be used while serializing to JSON.
[DataMember(Name = "label")]
public string Label { get; set; }
public DataPoint DataPoint { get; set; }
}
[DataContract]
public class DataPoint
{
[DataMember(Name = "x")]
public List<string> X { get; set; }
//Explicitly setting the name to be used while serializing to JSON.
[DataMember(Name = "y")]
public List<string> Y { get; set; }
}
<canvas id="myChart"></canvas>
<script>
$(document).ready(function () {
// Get the data from the controller using viewbag
// so the data looks something like this [ { Label : "ABC" , DataPoint :[ { X: '222' , Y :60 } ] } ]
var data = @Html.Raw(Json.Encode(ViewBag.DataPoints));
// declare empty array
var dataSet = []; var qty= []; var dates= [];
// loop through the data and get the Label as well as get the created dates and qty for the array of object
for (var i = 0; i < data.length; i++) {
qty.push(data[i].DataPoint.Y);
for (var d = 0; d < data[i].DataPoint.X.length; d++) {
// we're setting this on the X- axis as the label so we need to make sure that we get all the dates between searched dates
dates.push(data[i].DataPoint.X[d]);
}
// we create an array of object, set the Lable which will display LocationName, The data here is the Quantity
dataSet.push(
{
label: data[i].Label,
data: data[i].DataPoint.Y,
fill: false,
borderColor: poolColors(qtyInLocations.length),
pointBorderColor: "black",
pointBackgroundColor: "white",
lineTension: 0.1
}
);
}
// this is the options to set the Actual label like Date And Quantity
var options = {
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: "Date",
fontSize: 20
},
}],
yAxes: [{
ticks: {
beginAtZero:true
},
scaleLabel: {
display: true,
labelString: 'Quantity',
fontSize: 20
}
}]
}
};
// we need to remove all duplicate values from the CreatedDate array
var uniq = [ ...new Set(dates) ];
// get the canvas
var ctx = document.getElementById("myChart").getContext('2d');
// build the chart
var myChart = new Chart(ctx, {
type: 'line',
data: {
labels: uniq,
datasets:dataSet
},
options: options
});
});
/// will get get random colors each time
function dynamicColors() {
var r = Math.floor(Math.random() * 255);
var g = Math.floor(Math.random() * 255);
var b = Math.floor(Math.random() * 255);
return "rgba(" + r + "," + g + "," + b + ", 0.5)";
}
/// will display random colors each time
function poolColors(a) {
var pool = [];
for(i = 0; i < a; i++) {
pool.push(dynamicColors());
}
return pool;
}
</script>
//用于序列化数据的DataContract-需要以JSON格式提供
[数据合同]
公共类标签点
{
//显式设置序列化为JSON时要使用的名称。
[DataMember（Name=“label”）]
公共字符串标签{get；set；}
公共数据点数据点{get；set；}
}
[数据合同]
公共类数据点
{
[DataMember（Name=“x”）]
公共列表X{get；set；}
//显式设置序列化为JSON时要使用的名称。
[数据成员（Name=“y”）]
公共列表Y{get；set；}
}
List<LabelPoint> dataPoints = GetProducts.ToList()
.GroupBy(p => p.ProductName,
(k, c) => new LabelPoint()
{
DataPoint = new DataPoint { X = c.Select(y => y.Date.ToString("dd/MM/yyyy HH:mm")).ToList(), Y = c.Select(cs => cs.Quantity).ToList() },
Label = k
}
).ToList();
ViewBag.DataPoints = dataPoints;
<canvas id="myChart"></canvas>
<script>
$(document).ready(function () {
// Get the data from the controller using viewbag
// so the data looks something like this [ { Label : "ABC" , DataPoint :[ { X: '222' , Y :60 } ] } ]
var data = @Html.Raw(Json.Encode(ViewBag.DataPoints));
// declare empty array
var dataSet = []; var qty= []; var dates= [];
// loop through the data and get the Label as well as get the created dates and qty for the array of object
for (var i = 0; i < data.length; i++) {
qty.push(data[i].DataPoint.Y);
for (var d = 0; d < data[i].DataPoint.X.length; d++) {
// we're setting this on the X- axis as the label so we need to make sure that we get all the dates between searched dates
dates.push(data[i].DataPoint.X[d]);
}
// we create an array of object, set the Lable which will display LocationName, The data here is the Quantity
dataSet.push(
{
label: data[i].Label,
data: data[i].DataPoint.Y,
fill: false,
borderColor: poolColors(qtyInLocations.length),
pointBorderColor: "black",
pointBackgroundColor: "white",
lineTension: 0.1
}
);
}
// this is the options to set the Actual label like Date And Quantity
var options = {
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: "Date",
fontSize: 20
},
}],
yAxes: [{
ticks: {
beginAtZero:true
},
scaleLabel: {
display: true,
labelString: 'Quantity',
fontSize: 20
}
}]
}
};
// we need to remove all duplicate values from the CreatedDate array
var uniq = [ ...new Set(dates) ];
// get the canvas
var ctx = document.getElementById("myChart").getContext('2d');
// build the chart
var myChart = new Chart(ctx, {
type: 'line',
data: {
labels: uniq,
datasets:dataSet
},
options: options
});
});
/// will get get random colors each time
function dynamicColors() {
var r = Math.floor(Math.random() * 255);
var g = Math.floor(Math.random() * 255);
var b = Math.floor(Math.random() * 255);
return "rgba(" + r + "," + g + "," + b + ", 0.5)";
}
/// will display random colors each time
function poolColors(a) {
var pool = [];
for(i = 0; i < a; i++) {
pool.push(dynamicColors());
}
return pool;
}
</script>
List dataPoints=GetProducts.ToList（）
.GroupBy（p=>p.ProductName，
（k，c）=>新的LabelPoint（）
{
DataPoint=newdatapoint{X=c.Select（y=>y.Date.ToString（“dd/MM/yyyy HH:MM”））.ToList（），y=c.Select（cs=>cs.Quantity.ToList（），
标签=k
}
).ToList（）；
ViewBag.DataPoints=数据点；
List<LabelPoint> dataPoints = GetProducts.ToList()
.GroupBy(p => p.ProductName,
(k, c) => new LabelPoint()
{
DataPoint = new DataPoint { X = c.Select(y => y.Date.ToString("dd/MM/yyyy HH:mm")).ToList(), Y = c.Select(cs => cs.Quantity).ToList() },
Label = k
}
).ToList();
ViewBag.DataPoints = dataPoints;
<canvas id="myChart"></canvas>
<script>
$(document).ready(function () {
// Get the data from the controller using viewbag
// so the data looks something like this [ { Label : "ABC" , DataPoint :[ { X: '222' , Y :60 } ] } ]
var data = @Html.Raw(Json.Encode(ViewBag.DataPoints));
// declare empty array
var dataSet = []; var qty= []; var dates= [];
// loop through the data and get the Label as well as get the created dates and qty for the array of object
for (var i = 0; i < data.length; i++) {
qty.push(data[i].DataPoint.Y);
for (var d = 0; d < data[i].DataPoint.X.length; d++) {
// we're setting this on the X- axis as the label so we need to make sure that we get all the dates between searched dates
dates.push(data[i].DataPoint.X[d]);
}
// we create an array of object, set the Lable which will display LocationName, The data here is the Quantity
dataSet.push(
{
label: data[i].Label,
data: data[i].DataPoint.Y,
fill: false,
borderColor: poolColors(qtyInLocations.length),
pointBorderColor: "black",
pointBackgroundColor: "white",
lineTension: 0.1
}
);
}
// this is the options to set the Actual label like Date And Quantity
var options = {
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: "Date",
fontSize: 20
},
}],
yAxes: [{
ticks: {
beginAtZero:true
},
scaleLabel: {
display: true,
labelString: 'Quantity',
fontSize: 20
}
}]
}
};
// we need to remove all duplicate values from the CreatedDate array
var uniq = [ ...new Set(dates) ];
// get the canvas
var ctx = document.getElementById("myChart").getContext('2d');
// build the chart
var myChart = new Chart(ctx, {
type: 'line',
data: {
labels: uniq,
datasets:dataSet
},
options: options
});
});
/// will get get random colors each time
function dynamicColors() {
var r = Math.floor(Math.random() * 255);
var g = Math.floor(Math.random() * 255);
var b = Math.floor(Math.random() * 255);
return "rgba(" + r + "," + g + "," + b + ", 0.5)";
}
/// will display random colors each time
function poolColors(a) {
var pool = [];
for(i = 0; i < a; i++) {
pool.push(dynamicColors());
}
return pool;
}
</script>
$（文档）.ready（函数（）{
//使用viewbag从控制器获取数据
//所以数据看起来像这样[{标签：“ABC”，数据点：[{X:'222'，Y:60}]
var data=@Html.Raw（Json.Encode（ViewBag.DataPoints））；
//声明空数组
var数据集=[]；var数量=[]；var日期=[]；
//循环遍历数据，获取标签，并获取对象数组的创建日期和数量
对于（变量i=0；i