remove warning if new function is used

Author: uvchik

pvlib/modelchain.py

@@ -659,18 +659,20 @@ def complete_irradiance(self, times=None, weather=None):
                    "Results can be too high or negative.\n" +
                    "Help to improve this function on github:\n" +
                    "https://github.com/pvlib/pvlib-python \n")
-        warnings.warn(wrn_txt, UserWarning)
+
         if {'ghi', 'dhi'} <= icolumns and 'dni' not in icolumns:
             logging.debug('Estimate dni from ghi and dhi')
             self.weather.loc[:, 'dni'] = pvlib.irradiance.dni(
                 self.weather.loc[:, 'ghi'], self.weather.loc[:, 'dhi'],
                 self.solar_position.loc[:, 'zenith'])
         elif {'dni', 'dhi'} <= icolumns and 'ghi' not in icolumns:
+            warnings.warn(wrn_txt, UserWarning)
             logging.debug('Estimate ghi from dni and dhi')
             self.weather.loc[:, 'ghi'] = (
                 self.weather.dni * tools.cosd(self.solar_position.zenith) +
                 self.weather.dhi)
         elif {'dni', 'ghi'} <= icolumns and 'dhi' not in icolumns:
+            warnings.warn(wrn_txt, UserWarning)
             logging.debug('Estimate dhi from dni and ghi')
             self.weather.loc[:, 'dhi'] = (
                 self.weather.ghi - self.weather.dni *