if(part[i].first<0 || part[i].first>part[i].second || part[i].second>st[i])
throw INTERP_KERNEL::Exception("MEDCouplingStructuredMesh::PutInGhostFormat : the specified part is invalid ! The begin must be >= 0 and <= end ! The end must be <= to the size at considered dimension !");
stWithGhost.resize(st.size());
if(part[i].first<0 || part[i].first>part[i].second || part[i].second>st[i])
throw INTERP_KERNEL::Exception("MEDCouplingStructuredMesh::PutInGhostFormat : the specified part is invalid ! The begin must be >= 0 and <= end ! The end must be <= to the size at considered dimension !");
stWithGhost.resize(st.size());