detect edges even when x

diff --git a/kernel/fstdata.cc b/kernel/fstdata.cc
index 9170da45ef690f5032b9411ace23c6f5f3a1b739..53603ef496ed9b54cc660342bdcaebf02081fc41 100644 (file)
--- a/kernel/fstdata.cc
+++ b/kernel/fstdata.cc
@@ -114,9 +114,9 @@ void FstData::reconstruct_edges_callback(uint64_t pnt_time, fstHandle pnt_facidx
        std::string val = std::string((const char *)pnt_value);
        std::string prev = last_data[pnt_facidx];
        if (pnt_time>=start_time) {
-               if (prev=="0" && val=="1")
+               if (prev!="1" && val=="1")
                        edges.push_back(pnt_time);
-               if (prev=="1" && val=="0")
+               if (prev!="0" && val=="0")
                        edges.push_back(pnt_time);
        }
        last_data[pnt_facidx] = val;