Use the clear() method on Event to reset for filling.

1 files changed, 1 insertions, 2 deletions

diff --git a/io/root.C b/io/root.C
index 0cfb37f..dfcb3c0 100644
--- a/io/root.C
+++ b/io/root.C
@@ -51,11 +51,10 @@ void fill_event(TTree *T,
 		Event *ev, int event_id, double *gen_pos, int nchannels, 
 		float *channel_times)
 {
+  ev->clear();
   ev->event_id = event_id;
   MC &mc = ev->mc;
   mc.gen_pos.SetXYZ(gen_pos[0], gen_pos[1], gen_pos[2]);
-  mc.photon.resize(0);
-  ev->channel.resize(0);
   ev->nhit = 0;
   Channel ch;
   for (int i=0; i < nchannels; i++) {