使用Chartrangeslider进行Google可视化,并从Google文档电子表格导入数据
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我有问题,当使用带有chartwrapper和controlwrapper的仪表板环境时,我没有设法从谷歌电子表格中实现我的数据。我使用了谷歌图表网站(https://developers.google.com/chart/interactive/docs/gallery/controls)中的饼图示例,并试图修改但没有成功。也许有人可以提供指针!在此先感谢(链接到jsfiddle:https://jsfiddle.net/Chriseif/08mk90hu/1/#&togetherjs=MHq11Kn3hl)
<html>
<head>
<!--Load the AJAX API-->
<script type="text/javascript"
src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
// Load the Visualization API and the controls package.
google.charts.load('current', {'packages':['corechart', 'controls']});
// Set a callback to run when the Google Visualization API is loaded.
google.charts.setOnLoadCallback(drawDashboard);
// Callback that creates and populates a data table,
// instantiates a dashboard, a range slider and a pie chart,
// passes in the data and draws it.
function drawDashboard() {
var query = new
google.visualization.Query("https://docs.google.com/spreadsheets/d/
1uJNf8RgPjcjm3pUWig0VL4EEww1PG-bNL8mtcxI6SYI/edit");
query.send(response);
function handleQueryResponse(response) {
if (response.isError()) {
alert('Error in query: ' + response.getMessage() + ' '
+ response.getDetailedMessage());
return;
}
var data1 = response.getDataTable();
}
// Create a dashboard.
var dashboard = new google.visualization.Dashboard(
document.getElementById('dashboard_div'));
// Create a range slider, passing some options
var donutRangeSlider = new google.visualization.ControlWrapper({
'controlType': 'ChartRangeFilter',
'containerId': 'filter_div',
'options': {
'filterColumnIndex ': 2
}
});
// Create a pie chart, passing some options
var pieChart = new google.visualization.ChartWrapper({
'chartType': 'LineChart',
'containerId': 'chart_div',
'options': {
'width': 900,
'height': 300,
'pieSliceText': 'value',
'legend': 'right'
}
});
// Establish dependencies, declaring that 'filter' drives
'pieChart',
// so that the pie chart will only display entries that are let
through
// given the chosen slider range.
dashboard.bind(donutRangeSlider, pieChart);
// Draw the dashboard.
dashboard.draw(data1);
}
</script>
</head>
<body>
<!--Div that will hold the dashboard-->
<div id="dashboard_div">
<!--Divs that will hold each control and chart-->
<div id="filter_div"></div>
<div id="chart_div"></div>
</div>
</body>
</html>
答案
首先,query.send
方法是异步的,并接受回调函数的参数
因为你需要等待查询中的数据,
所有仪表板代码都应该在回调中
否则它将在返回数据之前运行...
// the argument should be the name of a function
query.send(handleQueryResponse);
// callback function to be called when data is ready
function handleQueryResponse(response) {
//draw dashboard here...
接下来,范围过滤器应对用于x轴的列进行操作
除非你使用的是视图,否则它将是列索引0
(零是第一个索引)
var rangeSlider = new google.visualization.ControlWrapper({
controlType: 'ChartRangeFilter',
containerId: 'filter_div',
options: {
filterColumnIndex: 0 // <-- x-axis column
}
});
此外,从电子表格中绘制图表时,
你需要在每个轴上设置一个特定的数字格式,
否则,它将显示单词general
作为数字的一部分......
var chart = new google.visualization.ChartWrapper({
chartType: 'LineChart',
containerId: 'chart_div',
options: {
width: 900,
height: 300,
pieSliceText: 'value',
legend: 'right',
// set number formats
hAxis: {
format: '#,##0'
},
vAxis: {
format: '#,##0'
}
}
});
请参阅以下工作代码段...
google.charts.load('current', {
packages: ['corechart', 'controls']
}).then(function () {
var query = new google.visualization.Query("https://docs.google.com/spreadsheets/d/1uJNf8RgPjcjm3pUWig0VL4EEww1PG-bNL8mtcxI6SYI/edit");
query.send(handleQueryResponse);
function handleQueryResponse(response) {
if (response.isError()) {
alert('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage());
return;
}
var data1 = response.getDataTable();
var dashboard = new google.visualization.Dashboard(
document.getElementById('dashboard_div')
);
var rangeSlider = new google.visualization.ControlWrapper({
controlType: 'ChartRangeFilter',
containerId: 'filter_div',
options: {
filterColumnIndex: 0
}
});
var chart = new google.visualization.ChartWrapper({
chartType: 'LineChart',
containerId: 'chart_div',
options: {
width: 900,
height: 300,
pieSliceText: 'value',
legend: 'right',
hAxis: {
format: '#,##0'
},
vAxis: {
format: '#,##0'
}
}
});
dashboard.bind(rangeSlider, chart);
dashboard.draw(data1);
}
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="dashboard_div">
<div id="filter_div"></div>
<div id="chart_div"></div>
</div>
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