如何将高图转换为二进制图像 [英] How to convert highchart to binary image
本文介绍了如何将高图转换为二进制图像的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
< highchart id =chartclass =plotchartCntrconfig =chart>< / highchart>
JS:
$ scope.chart = {
options:{
chart:{
type:'column'
}
},
xAxis :{
categories:[] //在搜索后动态加载
},
yAxis:{
title:{
text:'Counts'
} ,
标签:{
formatter:function(){
return this.value
}
}
},
tooltip:{
十字线:true,
共享:true
},
series:[] //搜索后动态加载
}
我必须将其保存为图片。
我的代码(从堆栈溢出中获得):
var canvas = document.createElement(chart);
canvas.width = 200;
canvas.height = 500;
var ctx = canvas.getContext(2d);
ctx.drawImage(img,0,0);
var dataURL = canvas.toDataURL(image / png);
console.log(dataURL);
但是我收到错误 canvas.getContext不是函数
。
请提出建议
解决方案
最后,我得到了答案:
HTML:
< img id =mock/>
JS:
var svg = document.getElementById('chart')。children [0] .innerHTML;
// svg = chart.getSVG();
var base_image = new Image();
svg =data:image / svg + xml,+ svg;
base_image.src = svg;
$('#mock')。attr('src',svg);
我们也可以将图片标签直接保存在数据库中。参考。 将高图保存为二进制图像。
I'am using highchart for plotting a graph with angular:
HTML:
<highchart id="chart" class="plotchartCntr" config="chart"></highchart>
JS:
$scope.chart = {
options: {
chart: {
type: 'column'
}
},
xAxis: {
categories: [] // dynamically loaded after search
},
yAxis: {
title: {
text: 'Counts'
},
labels: {
formatter: function() {
return this.value
}
}
},
tooltip: {
crosshairs: true,
shared: true
},
series: [] // dynamically loaded after search
}
I have to save this as a image.
My code (got from stack overflow):
var canvas = document.createElement("chart");
canvas.width = 200;
canvas.height = 500;
var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0);
var dataURL = canvas.toDataURL("image/png");
console.log(dataURL);
But I am getting error canvas.getContext is not a function
.
Please suggest
解决方案
Thanks, at last I got the answer:
HTML:
<img id="mock" />
JS:
var svg = document.getElementById('chart').children[0].innerHTML;
//svg = chart.getSVG();
var base_image = new Image();
svg = "data:image/svg+xml," + svg;
base_image.src = svg;
$('#mock').attr('src', svg);
We can save image tag directly in DB also. Ref. Save highchart to binary image.
这篇关于如何将高图转换为二进制图像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!
查看全文