diff --git a/xray/azav.py b/xray/azav.py
index f28d414..4570117 100644
--- a/xray/azav.py
+++ b/xray/azav.py
@@ -107,7 +107,7 @@ def getAI(poni,folder=None):
     ai = pyFAI.azimuthalIntegrator.AzimuthalIntegrator(**poni)
   elif isinstance(poni,str):
     # look is file exists in cwd
-    if os.path.isfilee(poni):
+    if os.path.isfile(poni):
       ai = pyFAI.load(poni)
     # if file does not exist look for one with that name around
     else:
@@ -286,8 +286,8 @@ def find_center(img,psize=100e-6,dist=0.1,wavelength=0.8e-10,center=None,referen
       plt.sca(ax_img); # set figure to use for mouse interaction
       center = plt.ginput()[0]
     print("Selected center:",center)
-    ai.set_poni1(center[0]*psize)
-    ai.set_poni2(center[1]*psize)
+    ai.set_poni1(center[1]*psize)
+    ai.set_poni2(center[0]*psize)
     q,az,i = do2d(ai,img)
     mesh = ax_pyfai.pcolormesh(q,az,i)
     mesh.set_clim( *np.percentile(i,(2,95) ) )
@@ -364,7 +364,7 @@ def chiAverage(folder,basename="",scale=1,norm=None,returnAll=False,plot=False,s
   if isinstance(norm,np.ndarray):
     i = i/norm[:,np.newaxis]
   title = "%s %s" % (folder,basename)
-  plotdata(q,i,plot=plot,showTrend=showTrend,title=title,clim=clim)
+  utils.plotdata(q,i,plot=plot,showTrend=showTrend,title=title,clim=clim)
   if (showTrend and plot): plt.subplot(1,2,1)
   if showTrend:
     plt.pcolormesh(np.arange(i.shape[0]),q,i.T)