diff --git a/fluents/plots.py b/fluents/plots.py
index e99160a..3dedc0a 100644
--- a/fluents/plots.py
+++ b/fluents/plots.py
@@ -1036,7 +1036,7 @@ class PlotThresholder:
         
         icnodes = ds.existing_identifiers('go-terms', self._map_ids)
         icindices = ds.get_indices('go-terms', icnodes)
-        a = scipy.ravel(ds.asarray()[icindices])
+        a = ds.asarray()[icindices].sum(1)
         
         good = set(scipy.array(icnodes)[(a>=min) & (a<=max)])
 
diff --git a/workflows/gobrowser.py b/workflows/gobrowser.py
index e4d7cb5..4530da1 100644
--- a/workflows/gobrowser.py
+++ b/workflows/gobrowser.py
@@ -769,9 +769,9 @@ class ThresholdDagPlot(DagPlot, plots.PlotThresholder):
         a = ds.asarray()
         a_max = max(a[a<inf])
         a_min = min(a[a>-inf])
-        self._sb_min.set_range(0, a_max)
-        self._sb_min.set_value(a_min)
-        self._sb_max.set_range(0, a_max)
-        self._sb_max.set_value(a_max)
+        self._sb_min.set_range(a_min-0.1, a_max+0.1)
+        self._sb_min.set_value(a_min-0.1)
+        self._sb_max.set_range(a_min-0.1, a_max+0.1)
+        self._sb_max.set_value(a_max+0.1)