def _x2c(self, x):
        """ Convert windowdow coordinates to cheb coordinates [-1,1] """
        return ((2 * x - self.window[1] - self.window[0]) /
                (self.window[1] - self.window[0]))
def _x2c(self, x):
        """ Convert windowdow coordinates to cheb coordinates [-1,1] """
        return ((2 * x - self.window[1] - self.window[0]) /
                (self.window[1] - self.window[0]))
def _x2c ( self , x ) : return ( ( 2 * x - self . window [ 1 ] - self . window [ 0 ] ) / ( self . window [ 1 ] - self . window [ 0 ] ) )
Convert windowdow coordinates to cheb coordinates [-1,1]
Convert windowdow coordinates to cheb coordinates [ - 1 1 ]