Dear Prof. Gupta, Could you provide more information, please? This is not a useful bug report. https://bruceravel.github.io/demeter/documents/SinglePage/bugs.html Many researchers use this software without issue. I have attached a test file for you to try. When you import it, please ensure the data type is set to mu(E) and units are keV. On my system (Win10x64, Demeter 0.9.26), the derivative plots without issue. -R. On 2018-12-23 12:11 a.m., mona gupta wrote:

respected sir/ma'am whenever I use Athena / Hephaestus on the time of plotting derivatives ..its hangs and after some time it shows per interpreter is not responding,,, so it is not working properly, even I am puzzled. please give me quick reply facing such problem ..even reinstalled it.

Regards

Mrs Mona Gupta Assistant Professor Department of Physics Govt PG College Kotdwar H N B Garhwal University Uttarakhand (India)

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