diff --git a/Cantera/python/Cantera/__init__.py b/Cantera/python/Cantera/__init__.py
index eb0acae02..4429cfb53 100755
--- a/Cantera/python/Cantera/__init__.py
+++ b/Cantera/python/Cantera/__init__.py
@@ -25,7 +25,8 @@ def writeCSV(f, list):
             f.write(item+', ')
         else:
             f.write(`item`+', ')
-        f.write('\n')
+            
+    f.write('\n')
 
 
 def table(keys, values):
diff --git a/Cantera/python/Cantera/num.py b/Cantera/python/Cantera/num.py
index 4a97d889d..c5ed378d9 100644
--- a/Cantera/python/Cantera/num.py
+++ b/Cantera/python/Cantera/num.py
@@ -28,3 +28,5 @@ asarray = nummodule.asarray
 transpose = nummodule.transpose
 ravel = nummodule.ravel
 shape = nummodule.shape
+ones = nummodule.ones
+log10 = nummodule.log10
diff --git a/apps/MixMaster/DataGraph.py b/apps/MixMaster/DataGraph.py
index 9293a141c..7224ef7a8 100644
--- a/apps/MixMaster/DataGraph.py
+++ b/apps/MixMaster/DataGraph.py
@@ -98,14 +98,15 @@ class DataGraph(Frame):
         for id in ids:
 	    self.canvas.delete(id)
 
+    def 
     def screendata(self):
 	    self.xdata = array(self.data[self.ix,:])
 	    self.ydata = array(self.data[self.iy,:])	    
 	    npts = len(self.ydata)
 	    if self.logscale[0] > 0:
-		    self.xdata = log10(max(1.e-20,self.xdata))
+		    self.xdata = log10(self.xdata)
 	    if self.logscale[1] > 0:
-		    self.ydata = log10(max(1.e-20,self.ydata))
+		    self.ydata = log10(self.ydata)
 	    f = float(self.graph_w)/(self.maxX-self.minX)
 	    self.xdata = (self.xdata - self.minX)*f + self.origin[0]
 	    f = float(self.graph_h)/(self.maxY-self.minY)
@@ -113,9 +114,9 @@ class DataGraph(Frame):
 	    
     def toscreen(self,x,y):
 	    if self.logscale[0] > 0:
-		    x = log10(max(1.e-20,x))
+		    x = log10(x)
 	    if self.logscale[1] > 0:
-		    y = log10(max(1.e-20,y))
+		    y = log10(y)
 	    f = float(self.graph_w)/(self.maxX-self.minX)
 	    xx = (x - self.minX)*f + self.origin[0]
 	    f = float(self.graph_h)/(self.maxY-self.minY)