<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def change_window(self, size_window):
        ''' Change the region of interest

        Args:
            size_window (float): Radius of the region of interest (km)

        Notes:
            Change the attributes ``size_window`` and ``window`` to
            correspond to the new region of interest.

        '''
        self.size_window = size_window
        self.window = self.lambert_window(
            self.size_window, self.lat0, self.lon0)