如何在Google图表上绘制垂直线到直方图? [英] How Draw Vertical Line to Histogram Graph on Google Charts?
问题描述
如果我绘制折线图没有问题,但是我想在直方图上显示..( https://developers.google.com/chart/interactive/docs/gallery/histogram )
If I draw line chart there is no problem but I want to this on histogram graph.. (https://developers.google.com/chart/interactive/docs/gallery/histogram)
对于LineChart;
For LineChart;
var chart = new google.visualization.LineChart(document.querySelector('#chart_div'));
对于直方图;
var chart = new google.visualization.Histogram(document.querySelector('#chart_div'));
其他代码;
function drawChart () {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Name');
data.addColumn({type: 'string', role: 'annotation'});
data.addColumn('number', 'Value');
data.addRows([
['Foo', null, 4],
['Bar', null, 3],
['Baz', null, 7],
['Bat', null, 9],
['Cad', 'Vertical line here', 9],
['Qud', null, 2],
['Piz', null, 6]
]);
var chart = new google.visualization.Histogram(document.querySelector('#chart_div'));
chart.draw(data, {
height: 300,
width: 400,
annotation: {
// index here is the index of the DataTable column providing the annotation
1: {
style: 'line'
}
}
});
}
推荐答案
Daniel LaLiberte在Google Groups上回答了我的问题,Google Groups是Google的高级软件工程师.
Daniel LaLiberte answered my question on Google Groups, who is a Senior Software Engineer at Google..
https://groups.google. com/forum/#!msg/google-visualization-api/7y3LrKETEwY/fR4HoYwBu-EJ
因此在Google图表上是不可能的..
So it is not possible on Google Charts..
但是:) Google Charts使用SVG.我想画线到30 x轴.
But :) Google Charts uses SVG.. For exp. I want to draw line to 30 x axis..
var newLine = document.createElementNS('http://www.w3.org/2000/svg', 'line');
newLine.setAttribute('id', 'lineId');
newLine.setAttribute('style', 'stroke:rgb(0,0,0); stroke-width:3;');
newLine.setAttribute('x1', chart.getChartLayoutInterface().getXLocation(30));
newLine.setAttribute('y1', chart.getChartLayoutInterface().getChartAreaBoundingBox().top);
newLine.setAttribute('x2', chart.getChartLayoutInterface().getXLocation(30));
newLine.setAttribute('y2', chart.getChartLayoutInterface().getChartAreaBoundingBox().height + chart.getChartLayoutInterface().getChartAreaBoundingBox().top);
$("svg").append(newLine);
这篇关于如何在Google图表上绘制垂直线到直方图?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!