def p2s(self, p=None):
        """Convert from plot to screen coordinates"""
        if not p: p = [0, 0]

        s = self.p2c(p)
        return self.c2s(s)
def p2s ( self , p = None ) : if not p : p = [ 0 , 0 ] s = self . p2c ( p ) return self . c2s ( s )
Convert from plot to screen coordinates