Merge remote-tracking branch 'origin/master'

src/Structure/H5PartWrapperForPS.cpp

@@ -234,9 +234,8 @@ void H5PartWrapperForPS::writeStep(PartBunch& bunch, const std::map<std::string,
 
 void H5PartWrapperForPS::writeStepHeader(PartBunch& bunch,
                                          const std::map<std::string, double> &additionalStepAttributes) {
-    bunch.calcBeamParameters();
-
     EnvelopeBunch *ebunch = static_cast<EnvelopeBunch*>(&bunch);
+    ebunch->calcBeamParameters();
 
     double   actPos   = ebunch->get_sPos();
     double   t        = ebunch->getT();
@@ -531,4 +530,4 @@ void H5PartWrapperForPS::dumpStashedPhaseSpaceEnvelope() {
         WRITEDATA(Float64, file_m, "pz", f64buffer);
         //rc = H5Fflush, file_m->file, rc = H5F_SCOPE_GLOBAL);
     }
-}
\ No newline at end of file
+}