要获得正确的图表宽度,请将chartArea
定义添加到您的options
对象。这些chartArea
设置列在“配置选项”下的AreaChart
文档中:
chartArea: {
left: 40,
top: 10,
width: 900,
height: 350
}
演示:http: //jsfiddle.net/2H7sp/
google.load("visualization", "1", { packages: ["corechart"] });
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Year', 'Sales', 'Expenses'],
['November', 1000, 400],
['December', 1170, 460],
['January', 660, 1120],
['February', 690, 1120],
['March', 780, 1120],
['April', 820, 1120],
['May', 660, 1120],
['June', 1030, 540]
]);
var options = {
title: '',
backgroundColor: 'none',
legend: { position: 'none' },
hAxis: {
title: 'Year',
titleTextStyle: {
color: 'grey'
}
},
chartArea: {
left: 40,
top: 10,
width: 600,
height: 150
}
};
var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
body { margin: 0; }
#chart_div {
background-color: #f5f5f5;
width: 660px;
height: 200px;
overflow: hidden;
margin: 0 auto;
}
<script src="https://www.google.com/jsapi?jsapi.js"></script>
<div id="chart_div"></div>
你需要稍微玩一下这些数字。 chartArea
指图表的图形部分,不包括轴、标题和图例。因此,您需要为您的值添加填充以留出空间。
编辑:要获得水平线,您需要为相应列中的每一行添加两个附加系列,其值为 900 和 700:
var data = google.visualization.arrayToDataTable([
[ 'Year', 'Sales', 'Expenses', 'a', 'b' ],
[ 'November', 1000, 400, 900, 700 ],
[ 'December', 1170, 460, 900, 700 ],
[ 'January', 660, 1120, 900, 700 ],
...
series
要获得正确的颜色,请为两个新系列设置不可见区域和黑色线条的选项指定定义。
var options = {
...
series: {
2: { areaOpacity: 0, color: "#000" },
3: { areaOpacity: 0, color: "#000" }
},
...
这很接近,但线条将是实线而不是虚线,并且不会有标签。您可以通过向数据表中添加具有角色的列来获得这些效果。您将无法使用.arrayToDataTable()
它,而是需要使用更详细的语法:
var data = new google.visualization.DataTable();
data.addColumn("string", "Year");
data.addColumn("number", "Sales");
data.addColumn("number", "Expenses");
data.addColumn("number", "a");
data.addColumn("number", "b");
data.addRows([
['November', 1000, 400, 900, 700],
['December', 1170, 460, 900, 700],
['January', 660, 1120, 900, 700],
...
对于虚线,在每个“a”和“b”列之后添加一个确定性角色列:
data.addColumn({ type: "boolean", role: "certainty" });
要获得“a”和“b”标签,请在每个确定性列之后添加注释角色列:
data.addColumn({ type: "string", role: "annotation" });
确定性列的值都应该是false
。除了您希望标签出现的最后一行之外,注释列的值都应该为空。注释在数据点上方对齐,而不是在您想要的右侧对齐,但这已尽您所能。
添加了新列的数据行将如下所示:
data.addRows([
['November', 1000, 400, 900, false, null, 700, false, null],
['December', 1170, 460, 900, false, null, 700, false, null],
...
['May', 660, 1120, 900, false, null, 700, false, null],
['June', 1030, 540, 900, false, "a", 700, false, "b"]
]);
而且,这是最终结果:http: //jsfiddle.net/2H7sp/2/
google.load("visualization", "1", { packages: ["corechart"] });
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn("string","Year");
data.addColumn("number","Sales");
data.addColumn("number","Expenses");
data.addColumn("number","a");
data.addColumn({type:"boolean",role:"certainty"});
data.addColumn({type:"string",role:"annotation"});
data.addColumn("number","b");
data.addColumn({type:"boolean",role:"certainty"});
data.addColumn({type:"string",role:"annotation"});
data.addRows([
['November', 1000, 400, 900, false, null, 700, false, null],
['December', 1170, 460, 900, false, null, 700, false, null],
['January', 660, 1120, 900, false, null, 700, false, null],
['February', 690, 1120, 900, false, null, 700, false, null],
['March', 780, 1120, 900, false, null, 700, false, null],
['April', 820, 1120, 900, false, null, 700, false, null],
['May', 660, 1120, 900, false, null, 700, false, null],
['June', 1030, 540, 900, false, "a", 700, false, "b"]
]);
var options = {
title: '',
backgroundColor: 'none',
legend: { position: 'none' },
hAxis: {
title: 'Year',
titleTextStyle: { color: 'grey' }
},
series:{
2:{areaOpacity:0,color:"#000"},
3:{areaOpacity:0,color:"#000"}
},
chartArea: {
left: 40,
top: 10,
width: 600,
height: 150
}
};
var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
body { margin: 0; }
#chart_div {
background-color: #f5f5f5;
width: 660px;
height: 200px;
overflow: hidden;
margin: 0 auto;
}
<script src="https://www.google.com/jsapi?jsapi.js"></script>
<div id="chart_div"></div>