dear Xingsheng, if you are used to commandline you can modify my awk-script to fit your needs.
to format the mesh file use the following command: awk -f pretty_print_msh.awk input.msh > output.msh the awk-script is attached best regards, Winfried On Thu, 19 Mar 2020, Xingsheng Sun wrote:
Hello All, I am using Gmsh to generate the mesh file for Ls-dyna. The problem is that in the key-format file generated by Gmsh, the coordinates of nodes have too many digits. For instance, in the node information: *NODE 22, 0, 0.012499999999976, -0.001 23, 0, 0.02499999999995, -0.001 24, 0, 0.037499999999926, -0.001 25, 0, 0.049999999999907, -0.001 the y-coordinates of nodes 22-25 have 15 digits that cannot be read by Ls-dyna. So could any people shed light on how to reduce the number of digits in Gmsh? I am using command lines, not GUI. Thank you so much in advance. Best regards, Xingsheng
______________________________________________________________________ / | Winfried Boxleitner | Scientist | AIT Austrian Institute of Technology GmbH \______________________________________________________________________
#======================================================================# # # # (c) AIT 2013, all rights reserved # # # # Author: Winfried Boxleitner # # # #======================================================================# # # remove unnecessary entries which are near 0 # BEGIN{ filter=0 nodes=0 limit=1.0e-20 } ### program loop ### { ### for gmsh files: if($1 ~ /\$[A-Z][a-z]/) {filter=1} if($1 ~ /\$Node/) {nodes=1} if($1 ~ /\$End[A-Z]/) {filter=0; nodes=0} ### for other blocked text-output: if($1 ~ /#{/) {filter=1; nodes=1} if($1 ~ /#}/) {filter=0; nodes=0} ### if(filter == 1) { if($1 ~ "[0-9]") { if($1 ~ "\"" ) { ### treat strings tags in gmsh files correctly, if they contain numbers print $0 }else{ printf "%5g ", $1 } for(i=2;i<=NF;i++) if(nodes > 0) { if(($i*$i)<limit) printf "%+12.6g ", 0 else printf "%+12.6g ", $i } else { printf "%5g ", $i } printf "\n" } else { print $0 } } else { print $0 } }
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