Convert msh format 2.2 to 4.1

Sep · July 4, 2020, 23:33

Hello,

I am currently working with Dealii for a project. Currently, Dealii can only read .msh files of legacy 2 format (2.2). I am trying to update the source code for it to be able to read the new MSH format (4.1)

I was wondering if this has been done before?

Thank you for your time!

naffrancois · July 6, 2020, 16:44

Hello,

Have you read gmsh documentation ? File format specification is well detailed.

https://gmsh.info/doc/texinfo/gmsh.html#File-formats

Nevertheless, you can still export your mesh files to legacy v2 format from the latest gmsh versions, is there a specific feature you need from v4 format ?

Sep · July 6, 2020, 18:51

Hello!

Thank you for your reply!

So I am aware that gmsh is able to generate various versions of .msh file from a .geo file.

What I am trying to do is write a code that can read a version 4.1 .msh file and extract the information needed to make a version 2.2 .msh file. I was wondering if this had been done before!

Thank you for your time

July 4, 2020, 23:33	Convert msh format 2.2 to 4.1	#1
Sep New Member Sepehr Join Date: Jul 2020 Posts: 2 Rep Power: 0	Hello, I am currently working with Dealii for a project. Currently, Dealii can only read .msh files of legacy 2 format (2.2). I am trying to update the source code for it to be able to read the new MSH format (4.1) I was wondering if this has been done before? Thank you for your time!

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July 6, 2020, 16:44		#2
naffrancois Senior Member Join Date: Oct 2011 Posts: 242 Rep Power: 17	Hello, Have you read gmsh documentation ? File format specification is well detailed. https://gmsh.info/doc/texinfo/gmsh.html#File-formats Nevertheless, you can still export your mesh files to legacy v2 format from the latest gmsh versions, is there a specific feature you need from v4 format ?

July 6, 2020, 18:51		#3
Sep New Member Sepehr Join Date: Jul 2020 Posts: 2 Rep Power: 0	Hello! Thank you for your reply! So I am aware that gmsh is able to generate various versions of .msh file from a .geo file. What I am trying to do is write a code that can read a version 4.1 .msh file and extract the information needed to make a version 2.2 .msh file. I was wondering if this had been done before! Thank you for your time