我使用下面的代码生成一个柱形图,其中包含列中的图形,但我真的希望它们位于条形图的底部而不是顶部。
这是我所拥有的图表的视觉效果:
var data = google.visualization.arrayToDataTable([
['Type', 'Completed', 'Outstanding'],
['Item 1', 75, 25],
['Item 2', 50, 40],
['Item 3', 80, 15]
]);
var view = new google.visualization.DataView(data);
view.setColumns([0, 1,
{
calc: "stringify",
sourceColumn: 1,
type: "string",
role: "annotation"
},
2,
{
calc: "stringify",
sourceColumn: 2,
type: "string",
role: "annotation"
}]);
var options = {
legend: 'none',
height: 270,
chartArea: { 'width': '80%', 'height': '80%' },
bar: { groupWidth: '80%' },
vAxis: {
textPosition: 'none',
gridlines: {
color: 'transparent'
}
},
series: {
0: { color: '#00A887' },
1: { color: '#F6323E' },
}
};
var chart = new google.visualization.ColumnChart(document.getElementById('northPMChart'));
chart.draw(view, options);
任何帮助都非常感激。
答案 0 :(得分:1)
没有标准configuration options用于将注释移动到底部
您可以调整annotations.stem.length
以从默认位置调整
但这将使所有注释移动相同的距离,
这在这里不起作用
您可以手动移动注释,如下面的代码段...
但是,使用getImageURI
时,不会反映自定义修改
如果你需要生成图表的png图像
此外,图表会将注释移回原来的位置,
任何时候都有交互性,例如列悬停
所以当活动发生时,必须使用MutationObserver
将其移回......
google.charts.load('current', {
callback: function () {
drawChart();
window.addEventListener('resize', drawChart, false);
},
packages:['corechart']
});
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Type', 'Completed', 'Outstanding'],
['Item 1', 75, 25],
['Item 2', 50, 40],
['Item 3', 80, 15]
]);
var view = new google.visualization.DataView(data);
view.setColumns([0, 1,
{
calc: "stringify",
sourceColumn: 1,
type: "string",
role: "annotation"
},
2,
{
calc: "stringify",
sourceColumn: 2,
type: "string",
role: "annotation"
}]);
var options = {
legend: 'none',
height: 270,
chartArea: { 'width': '80%', 'height': '80%' },
bar: { groupWidth: '80%' },
vAxis: {
textPosition: 'none',
gridlines: {
color: 'transparent'
}
},
series: {
0: { color: '#00A887' },
1: { color: '#F6323E' },
}
};
var container = document.getElementById('northPMChart');
var chart = new google.visualization.ColumnChart(container);
// move annotations
var observer = new MutationObserver(function () {
Array.prototype.forEach.call(container.getElementsByTagName('text'), function(annotation) {
if ((annotation.getAttribute('text-anchor') === 'middle') &&
(annotation.getAttribute('fill') === '#ffffff')) {
var chartLayout = chart.getChartLayoutInterface();
annotation.setAttribute('y',
chartLayout.getYLocation(0) - (parseInt(annotation.getAttribute('font-size')) / 2)
);
}
});
});
observer.observe(container, {
childList: true,
subtree: true
});
chart.draw(view, options);
}
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="northPMChart"></div>