How to Convert TMESH Data to Text Files in MCNP6 Using Python"

[rai915]

I would like to analyse mdata of tmesh in MCNP6 by python, but I am struggling how to convert mdata (unformatted binary) to any text file in python.
I used GRIDCONV but it's not suitable for automations.

I also used scipy.io.Fortrunfile but could not convert the file because I was not sure fortrun setting for output, like endians.

 

[Alex A]

Welcome to PF!

Are you also generating a mctal file and does this not have what you need as text when you do a tmesh?

If the data is right https://github.com/ipostuma/MCNPtools might help to plot what you want.

 

[rai915]

Welcome to PF!

Are you also generating a mctal file and does this not have what you need as text when you do a tmesh?

If the data is right https://github.com/ipostuma/MCNPtools might help to plot what you want.

Thank you for the reply, but I want to have MDATA generated by tmesh option, not mctal.
MDATA is the tmesh tally data, with unformatted binary.

 

[Alex A]

I'm assuming the reason you don't want to use gridconv is because it's interactive. What OS are you using?

For linux if you made a program that printed

y
mdatatext

and ran it with program.py | gridconv
That would take a binary format file called mdata and convert it to a text file called mdatatext
That is three enters, y(enter), mdatatext(enter), and two enters. This is for an older version but if it's changed I imagine it won't be much.

Patching the source would also work, if you don't have the source patching the binary will also work.

 

[rai915]

Thank you Alex, I solved it to control interactive GUIDCONV by pexpect:)