[Gmsh] extracting values such as stress, strain, displacement from nodes or elements

[Brian]

Hello, all.
I am quite new with Gmsh. I did FE analysis but its output format is .msh. 
I tried to get values from node and elements after simulation but I had no 
luck to find the answer. Is there anyone who can explain it to me step by 
step? Once again, what I want to know is 'number' not a colorful picture at 
the designated node or mesh. i look froward to hearing from expert soon. 
Thanks,

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