bug fix

mgpro/client.py

@@ -228,6 +228,7 @@ Syntax: powspec [w1, w2]
                 print('w1 should be less than w2')
             self.mg.power_fit(w1, w2)
             self.mg.plotpower()
+            self.mg.pcot = None
         else:
             print('Only two arguments can be accepted')
 

setup.py

@@ -5,7 +5,7 @@ packages = find_packages()
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
-VERSION = "0.1.14"
+VERSION = "0.1.15"
 setup(name='mgpro',
       version=VERSION,
       author='Mijian Xu',