javascript Google Charts 折线图中 a 轴上的日期
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Dates on a-axis in Google Charts line chart
提问by C. E.
Here's a newbie question, but how do I use dates for the x-axis in a Google Charts line chart?
这是一个新手问题，但如何在Google Charts 折线图中使用 x 轴的日期？
When I use new Date( ... ) I get the error message "Uncaught Error: Date and datetime column types are not supported"
当我使用 new Date( ... ) 时，我收到错误消息“未捕获的错误：不支持日期和日期时间列类型”
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Datum','Person1','Person2','Person3'],
[new Date(2012, 12, 19, 0, 0, 0),'5072.0537223002','5072.0537223002','5074.2809630567'],
[new Date(2012, 12, 20, 0, 0, 0),'5072.0537223002','5072.0537223002','5074.2809630567'],
]);
var options = {};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
(Using strings evenly spaces across the x-axis would be acceptable, but when I try with strings "Data column(s) for axis #0 cannot be of type string")
（在 x 轴上均匀使用字符串是可以接受的，但是当我尝试使用字符串时“轴 #0 的数据列不能是字符串类型”）
回答by Mehdi Karamosly
What about to convert the date to a string and just use Datewithout newlike below :
将日期转换为字符串并使用Date不new如下所示：
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Datum','Person1','Person2','Person3'],
[Date(2012, 12, 19, 0, 0, 0).toString(),'5072.0537223002','5072.0537223002','5074.2809630567'],
[Date(2012, 12, 20, 0, 0, 0).toString(),'5072.0537223002','5072.0537223002','5074.2809630567'],
]);
var options = {};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
Edit:You can follow their example in this link :
编辑：您可以在此链接中按照他们的示例进行操作：
https://google-developers.appspot.com/chart/interactive/docs/customizing_axes
https://google-developers.appspot.com/chart/interactive/docs/customizing_axes
Edit 2:
编辑2：
This is what I was able to do: http://jsfiddle.net/ANC9H/2/
这就是我能够做的：http: //jsfiddle.net/ANC9H/2/
google.load("visualization", "1", {packages:["LineChart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'persone1');
data.addColumn('number', 'persone2');
data.addColumn('number', 'persone3');
data.addRows([
[new Date(2008, 1 ,1),0.7,0.8,0.6],
[new Date(2008, 1 ,7),0.5,0.55,0.9] ]);
var options = {};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
I hope this helps.
我希望这有帮助。
回答by jim collins
That's because you're using arrayToDataTable(). If you use DataTable() the error message will go away. See this post : Column Chart with date axis not working
那是因为您使用的是 arrayToDataTable()。如果您使用 DataTable() 错误消息将消失。请参阅此帖子：带有日期轴的柱形图不起作用
