我使用以下示例创建了一个下拉菜单:https://jsfiddle.net/asgallant/WaUu2/这使得可以选择一列，然后在图表上显示该线。
但我也想使用 ChartRangeFilter 但问题是这个方法不使用仪表板，所以我不知道要开始让所有东西一起工作。我发现的大多数示例都使用这种仪表板方法。
我希望它大约像这个例子 http://jsfiddle.net/x7pyk55q/4/但想继续过滤列。
如果有人能为我提供一个如何正确执行此操作的示例，那就太好了。我对此有点陌生。
我的代码:
<html>
<head>
<title>Temperature Chart</title>
<link rel="stylesheet" type="text/css" href="graph.css">
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1.1', {'packages':['controls','corechart']});
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="colFilter_div"></div>
<div id="chart_div"></div>
<script language="JavaScript">
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var jsonData = "{\"cols\":[{\"id\":\"\",\"label\":\"datetime\",\"type\":\"datetime\"},{\"id\":\"\",\"label\":\"RPI1\",\"type\":\"number\"},{\"id\":\"\",\"label\":\"RPI2\",\"type\":\"number\"}],\"rows\":[{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 40, 41)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 40, 52)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 2)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 12)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 22)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 32)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 43)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 53)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 3)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 13)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 23)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 34)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 44)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 54)\"},{\"v\":\"19\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 4)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 15)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 25)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 35)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 45)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 55)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 6)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 16)\"},{\"v\":\"19\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 26)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 36)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 47)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 57)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 7)\"},{\"v\":\"19\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 17)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 27)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 38)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 48)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 58)\"},{\"v\":\"23\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 8)\"},{\"v\":\"23\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 18)\"},{\"v\":null},{\"v\":\"24\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 29)\"},{\"v\":null},{\"v\":\"22\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 39)\"},{\"v\":null},{\"v\":\"22\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 49)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 59)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 10)\"},{\"v\":null},{\"v\":\"22\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 20)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 30)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 40)\"},{\"v\":null},{\"v\":\"22\"}]}]}"
var data = new google.visualization.DataTable(JSON.parse(jsonData));
// return the JSON data in console
console.log(JSON.stringify(data));
var columnsTable = new google.visualization.DataTable();
columnsTable.addColumn('number', 'colIndex');
columnsTable.addColumn('string', 'colLabel');
var initState= {selectedValues: []};
// put the columns into this data table (skip column 0)
for (var i = 1; i < data.getNumberOfColumns(); i++) {
columnsTable.addRow([i, data.getColumnLabel(i)]);
}
initState.selectedValues.push(data.getColumnLabel(1));
var chart = new google.visualization.ChartWrapper({
chartType: 'LineChart',
containerId: 'chart_div',
dataTable: data,
options: {
title: 'Temps',
width: 1600,
height: 600,
hAxis:{
title:'DateTime'
},
vAxis:{
title: 'Temperature',
}
}
});
var columnFilter = new google.visualization.ControlWrapper({
controlType: 'CategoryFilter',
containerId: 'colFilter_div',
dataTable: columnsTable,
options: {
filterColumnLabel: 'colLabel',
ui: {
label:'',
caption: 'Select RPI',
allowTyping: false,
allowMultiple: true,
allowNone: false,
selectedValuesLayout: 'aside'
}
},
state: initState
});
function setChartView () {
var state = columnFilter.getState();
var row;
var view = {
columns: [0]
};
for (var i = 0; i < state.selectedValues.length; i++) {
row = columnsTable.getFilteredRows([{column: 1, value: state.selectedValues[i]}])[0];
view.columns.push(columnsTable.getValue(row, 0));
}
// sort the indices into their original order
view.columns.sort(function (a, b) {
return (a - b);
});
chart.setView(view);
chart.draw();
}
google.visualization.events.addListener(columnFilter, 'statechange', setChartView);
setChartView();
columnFilter.draw();
}
</script>
</body>
</html>
最佳答案
您可以使用ChartRangeFilter来设置view.rows
类似于CategoryFilter设置view.columns的方式
当 'statechange'事件在 ChartRangeFilter 上触发，
使用它的 state要过滤所选范围的行，
然后重新绘制图表
<小时/>ChartRangeFilter 应使用与图表相同的数据和 View 来绘制
并在CategoryFilter更改时重新绘制
请参阅以下工作片段...
google.charts.load('current', {
callback: drawChart,
packages:['controls','corechart']
});
function drawChart() {
// Create our data table out of JSON data loaded from server.
var jsonData = "{\"cols\":[{\"id\":\"\",\"label\":\"datetime\",\"type\":\"datetime\"},{\"id\":\"\",\"label\":\"RPI1\",\"type\":\"number\"},{\"id\":\"\",\"label\":\"RPI2\",\"type\":\"number\"}],\"rows\":[{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 40, 41)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 40, 52)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 2)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 12)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 22)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 32)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 43)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 41, 53)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 3)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 13)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 23)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 34)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 44)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 42, 54)\"},{\"v\":\"19\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 4)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 15)\"},{\"v\":\"22\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 25)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 35)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 45)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 43, 55)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 6)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 16)\"},{\"v\":\"19\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 26)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 36)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 47)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 44, 57)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 7)\"},{\"v\":\"19\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 17)\"},{\"v\":\"20\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 27)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 38)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 48)\"},{\"v\":\"21\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 45, 58)\"},{\"v\":\"23\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 8)\"},{\"v\":\"23\"},{\"v\":null}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 18)\"},{\"v\":null},{\"v\":\"24\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 29)\"},{\"v\":null},{\"v\":\"22\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 39)\"},{\"v\":null},{\"v\":\"22\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 49)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 46, 59)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 10)\"},{\"v\":null},{\"v\":\"22\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 20)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 30)\"},{\"v\":null},{\"v\":\"21\"}]},{\"c\":[{\"v\":\"Date(2017, 0, 3, 15, 47, 40)\"},{\"v\":null},{\"v\":\"22\"}]}]}"
var data = new google.visualization.DataTable(JSON.parse(jsonData));
var columnsTable = new google.visualization.DataTable();
columnsTable.addColumn('number', 'colIndex');
columnsTable.addColumn('string', 'colLabel');
var initState= {selectedValues: []};
// put the columns into this data table (skip column 0)
for (var i = 1; i < data.getNumberOfColumns(); i++) {
columnsTable.addRow([i, data.getColumnLabel(i)]);
}
initState.selectedValues.push(data.getColumnLabel(1));
var chart = new google.visualization.ChartWrapper({
chartType: 'LineChart',
containerId: 'chart_div',
dataTable: data,
options: {
title: 'Temps',
width: 1600,
height: 600,
hAxis:{
title:'DateTime'
},
vAxis:{
title: 'Temperature',
}
}
});
var rangeFilter = new google.visualization.ControlWrapper({
controlType: 'ChartRangeFilter',
containerId: 'rngFilter_div',
dataTable: data,
options: {
filterColumnIndex: 0,
ui: {
chartOptions: {
width: 1600,
height: 200,
hAxis:{
title:'DateTime'
},
vAxis:{
title: 'Temperature'
}
}
}
}
});
var columnFilter = new google.visualization.ControlWrapper({
controlType: 'CategoryFilter',
containerId: 'colFilter_div',
dataTable: columnsTable,
options: {
filterColumnLabel: 'colLabel',
ui: {
label:'',
caption: 'Select RPI',
allowTyping: false,
allowMultiple: true,
allowNone: false,
selectedValuesLayout: 'aside'
}
},
state: initState
});
function setChartViewCols () {
var state = columnFilter.getState();
var row;
var view = {
columns: [0]
};
for (var i = 0; i < state.selectedValues.length; i++) {
row = columnsTable.getFilteredRows([{column: 1, value: state.selectedValues[i]}])[0];
view.columns.push(columnsTable.getValue(row, 0));
}
// sort the indices into their original order
view.columns.sort(function (a, b) {
return (a - b);
});
view.rows = null;
chart.setView(view);
chart.draw();
rangeFilter.setView(view);
rangeFilter.setState();
rangeFilter.draw();
}
google.visualization.events.addListener(columnFilter, 'statechange', setChartViewCols);
function setChartViewRows () {
var state = rangeFilter.getState();
var view = chart.getView();
view.rows = rangeFilter.getDataTable().getFilteredRows([{
column: 0,
minValue: state.range.start,
maxValue: state.range.end
}]);
chart.setView(view);
chart.draw();
}
google.visualization.events.addListener(rangeFilter, 'statechange', setChartViewRows);
setChartViewCols();
columnFilter.draw();
}<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="colFilter_div"></div>
<div id="chart_div"></div>
<div id="rngFilter_div"></div>注意:
推荐使用loader.js加载库，而不是 jsapi
根据release notes ...
The version of Google Charts that remains available via the jsapi loader is no longer being updated consistently. Please use the new gstatic loader from now on.
<script src="https://www.gstatic.com/charts/loader.js"></script>
这将仅更改load声明
google.charts.load('current', {packages:['controls','corechart']});
您还可以包含 callback在 load声明，如上面的代码片段所示...
关于javascript - CategoryFilter 作为列选择器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41448949/