将 Canvas 图表导出为 png 和 pdf
[英]Export Canvas Charts to png and pdf
问题描述
I am working on a data visualization project and I have used the Chart.js library for drawing and now I need to export the charts in pdf and png format, what is the best way for me to do it correctly?
我正在做一个数据可视化项目，我使用了 Chart.js 库进行绘图，现在我需要以 pdf 和 png 格式导出图表，我正确执行此操作的最佳方法是什么？ Thanks for helping my friends...感谢帮助我的朋友...
1 个解决方案
解决方案1
0 已采纳 2020-06-23 12:32:09
If you want to create a feature to allow a user to download the created charts into a image, you can use the 'toDataURL()' function, and specify the canvas of each chart.如果要创建功能以允许用户将创建的图表下载到图像中，可以使用“toDataURL()” function，并指定每个图表的 canvas。
To download a canvas as a pdf you can use the jsPDF library, using the above function to retrieve the canvas and then specifying the dimensions. To download a canvas as a pdf you can use the jsPDF library, using the above function to retrieve the canvas and then specifying the dimensions.
I may be wrong but I believe you need to create the charts and display on a web page before converting them to an image/pdf.我可能错了，但我相信您需要创建图表并在 web 页面上显示，然后再将它们转换为图像/pdf。 Hope this helps!希望这可以帮助！
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