Chartjs 2.7.3:将Y数据设置在正确的X位置轴上 [英] Chartjs 2.7.3: Set Y data at the correct X position axis
问题描述
data: {
labels: ['29 Oct, 18', '30 Oct, 18', '02 Nov, 18', '14 Nov, 18', '15 Nov, 18', '19 Nov, 18', '20 Nov, 18', '28 Nov, 18'],
datasets: [{
pointRadius: 0,
label: 'Positive',
lineTension: 0,
data: [{'x': '15 Nov, 18', 'y': 18636}],
borderWidth: 1,
backgroundColor: 'rgba(0, 255, 0, 0.5)',
},{
pointRadius: 0,
label: 'Negative',
lineTension: 0,
data: [{'x': '29 Oct, 18', 'y': -20480}, {'x': '30 Oct, 18', 'y': -284}, {'x': '02 Nov, 18', 'y': -1625}, {'x': '14 Nov, 18', 'y': -6622}, {'x': '15 Nov, 18', 'y': -12991}, {'x': '19 Nov, 18', 'y': -1645}, {'x': '20 Nov, 18', 'y': -1230}, {'x': '28 Nov, 18', 'y': -39612}],
borderWidth: 1,
backgroundColor: 'rgba(255, 0, 0, 0.5)',
}]
},
问题是绿条位于错误的x位置。它目前处于'29 okt'但我用'15 nov'标记它
The problem is that the green bar is at the wrong x position. It is currently at '29 okt' but I tagged it with '15 nov'
如何将这些数据集设置为正确的x位置
How do I set those datasets to the correct x position
推荐答案
由于您指定了数据集的 x / y
坐标,因此您必须在图表选项中将 xAxes
比例类型设置为时间
。
Since you specified the x/y
coordinates of your data set, you have to set your xAxes
scale type as time
in your chart options.
var options = {
scales: {
xAxes: [
{
type: "time"
}
]
}
};
参见官方文档或检查下面工作示例中使用的选项。
See official docs for all possible configurations or check the options used in the working example below.
重要:您必须将数据集中的日期格式更改为'YYYY-MM -DD'
否则时刻
会抛出这个警告。
Important: You have to change the date format in your data set to something like 'YYYY-MM-DD'
otherwise moment
would throw this warning.
弃用警告:提供的值不在公认的RFC2822或
中ISO格式。时刻构造回落到js Date(),这在所有浏览器和版本中都不是
可靠。
Deprecation warning: value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), which is not reliable across all browsers and versions.
var data = {
labels: [
"2018-10-29",
"2018-10-30",
"2018-11-02",
"2018-11-14",
"2018-11-15",
"2018-11-19",
"2018-11-20",
"2018-11-28"
],
datasets: [{
pointRadius: 0,
label: "Positive",
lineTension: 0,
data: [{
x: "2018-11-15",
y: 18636
}],
borderWidth: 1,
backgroundColor: "rgba(0, 255, 0, 0.5)"
},
{
pointRadius: 0,
label: "Negative",
lineTension: 0,
data: [{
x: "2018-10-29",
y: -20480
},
{
x: "2018-10-30",
y: -284
},
{
x: "2018-11-02",
y: -1625
},
{
x: "2018-11-14",
y: -6622
},
{
x: "2018-11-15",
y: -12991
},
{
x: "2018-11-19",
y: -1645
},
{
x: "2018-11-20",
y: -1230
},
{
x: "2018-11-28",
y: -39612
}
],
borderWidth: 1,
backgroundColor: "rgba(255, 0, 0, 0.5)"
}
]
};
var options = {
scales: {
xAxes: [{
type: "time",
distribution: 'series',
time: {
displayFormats: {
day: 'D MMM, YY'
}
},
ticks: {
source: "labels"
},
gridLines: {
display: false
}
}]
}
};
var ctx = document.getElementById("myChart").getContext("2d");
var myBarChart = new Chart(ctx, {
type: "bar",
data: data,
options: options
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.23.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.3/Chart.min.js"></script>
<canvas id="myChart" width="300" height="100"></canvas>
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