Please have a look in the user-guide and the interppoints module in FieldConvert where there is an option to extract a plane of points. Cheers, Spencer. From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of 王舟阳 <wangzhouyang@buaa.edu.cn> Date: Saturday, 13 April 2024 at 09:55 To: nektar-users <nektar-users@imperial.ac.uk> Subject: [Nektar-users] question about extract a plane from flow field This email from wangzhouyang@buaa.edu.cn 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://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address. Dear nektar++ users and developers, Sorry to bother everyone here, however, I need some help about extract a plane from a flow field. How might I extract a certain plane from the flow field by location? For example, I have a 3D case, my mesh is A.xml and after simulation the output result is A.fld. And I would like to extract the planar flow field at the location x=0 from A.fld on A.xml mesh. Could I do this by NekMesh or FieldConvert modules? Thanks again to the users and developers of nektar++. Best Regards, Wang Zhouyang