Hi Ehsan, You can find more information about file conversion here: https://doc.nektar.info/userguide/5.2.0/user-guidese20.html Also, if you have compiled Nektar++ with Hdf5, you can produce a single Hdf5 file by using the -i Hdf5 option when running the solver. Best, Jacques ________________________________ From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of Ehsan Asgari <eh.asgari@gmail.com> Sent: Wednesday, March 15, 2023 6:11 AM To: nektar-users@imperial.ac.uk <nektar-users@imperial.ac.uk> Subject: [Nektar-users] Reconstruct the parallel files into a single field This email from eh.asgari@gmail.com originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fspam.ic.ac.uk%2FSpamConsole%2FSenders.aspx&data=05%7C01%7Cjacques.xing%40kcl.ac.uk%7Cac4d6e467a8041b2290d08db251c3bcc%7C8370cf1416f34c16b83c724071654356%7C0%7C0%7C638144575417196761%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=m0Mg2ivCEk0cOq%2BlgS5J%2BWOJPf0h0Ofo6cslyQdJcns%3D&reserved=0> to disable email stamping for this address. Dear all, I went through the user-guide to see how to convert the parallel files into a single field using FieldConvert. Unfortunately, I wasn't able to do it. Is there any specific command to do this? For example, I have 128 parallel fields inside a solution directory. I'd like to reconstruct them into a single file to post-process the solution. Kind regards syavash