Class Libraries & REST APIs for the developers To manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, DeskTop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms.... Ruby 代码 def chart_to_image () # Create a new Workbook....Workbook' ) . new # Get the first worksheet. sheet = workbook . getWorksheets...