I have a Gantt with a big data (3 years) and after exporting to pdf it is cropped. Is there any limitation and how can I solve this problem??
Yes, there are actually two limitations in a scenario when exporting a Gantt widget with a very long timespan. First, the Gantt could not export portions of its contents. As a consequence, when exporting to PDF the entire widget content should be exported. Here a related feature request from our Feedback portal: https://feedback.telerik.com/kendo-jquery-ui/1359881-multiple-page-pdf-export-for-gantt
The second limitation is the max dimensions that a PDF page could have. That is 200 inches resulting in the cropped Gantt that you have observed.
Having that said, for exporting purposes, I would suggest you use only the Year view of the Gantt. This way the chart length will fit the PDF page dimensions limit.
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