Update app.py

app.py

@@ -48,7 +48,7 @@ def tif_view(filepath, z):
         nn = np.minimum(3, img.shape[-1])
         imgi[:,:,:nn] = img[:,:,:nn]
         
-        filepath = fpath+'.png'
+        filepath = fpath+'z'+str(z)+'.png'
         tiff.imwrite(filepath, imgi.astype('uint8'))
     print('tif'+filepath)   
     return filepath