Created attachment 25743 [details] Patch to add modification and creation support of chart series I have created a patch to support ... - modification of chart series (value and category ranges) - creation of chart series by the duplication of the first chart series. Unsupported: - So far it is not possible to create a series within an empty chart. - Removing all series I hope it helps a bit.
Created attachment 25744 [details] Test case input (excel file) Is used by the Java test case.
Created attachment 25745 [details] Test case Java test case to test the new API.
Created attachment 25746 [details] Patch to add modification and creation support of chart series Fixed a bug in the patch.
Created attachment 25748 [details] Patch to add modification and creation support of chart series Added removeSeries() method to remove series items.
Created attachment 25751 [details] Patch to add modification and creation support of chart series Improvement related to the integration into 3.7-dev
Created attachment 25752 [details] Test case input (excel file)
Created attachment 25753 [details] Test case
Created attachment 25754 [details] Test case output (excel file)
Thanks for this. Applied (with some tweaks to make your test class a unit test) in r964855. If you do fancy adding more charting support to poi, we'd love to see the patches!