Are there any XML standards for charts?

Are there any XML standards for charts?

References

Reference NO 1

http://stackoverflow.com/questions/15205148/are-there-any-xml-standards-for-charts

Reference NO 2

http://docs.fusioncharts.com/charts/contents/?DataFormats/XML/Overview.html

Reference NO 3

http://msdn.microsoft.com/en-us/library/office/aa163921(v=office.10).aspx

Reference NO 4

http://crmchartguy.wordpress.com/

Reference NO 5

http://en.wikipedia.org/wiki/Comparison_of_e-book_formats

Reference NO 6

http://openxmldeveloper.org/cfs-filesystemfile.ashx/__key/communityserver-components-postattachments/00-00-00-19-70/Open-XML-Explained.pdf

Reference NO 7

http://go4answers.webhost4life.com/Example/chartxml-files-identical-settings-axis-62579.aspx

Reference NO 8

http://www.edidev.com/XMLvsEDI.html