Seems to have found a Bug in Neper 4.5.1-4

[smallrain1996]

Here is my test code, which works fine, but it doesn't make sense because there is a missing Element set in the INP file, FACE252

name=test_neper_2D
number=300
mkdir $name; cd $name
neper -T -n $number -dim 2 \
-periodicity 'x,y' \
-group "id<=150?1:2" \
-stattess dim,cellnb,x,y,z,size \
-statcell id,group,size,diameq \
-o $name
neper -M $name.tess -format inp,msh,phase \
-nset edges -faset none \
-statmesh eltnb,nodenb,size \
-statelt id,x,y \
-statnode id,x,y \
-statelset id,group,elts \
-elttype quad -rcl 0.5 \
-o $name
neper -V $name.msh -datacellcol id -print $name
cd ..
zip -r $name.zip $name

test_neper_2D.zip

[smallrain1996]

The basic reason I probably already know, set 252 does not contain any elements, which means there are some cases where Neper's simulation will not have the same number of grains as I specified, right?

[rquey]

With the "mapped meshing" technique (which does not follow the shape of the grains), yes, it may happen...