Kent, Will give this a try.
Thanks for your help, Carlos Kent Johnson wrote: > OK, off the top of my head (not tested) here are some things to get > you started. > > You could write a function that would retrieve a coordinate value > given an index number, for example: > def getCoord(data, ix): > base = ix*4 > value = data[ix]*10 + data[ix+1] + data[ix+2]/10.0 > if data[ix+3] < 5: > value = -value > return value > > Now if data is your big list, you can write getCoord(data, 5) to get > the value stored at data[20] to data[23]. Similarly you could write a > setter and maybe a getXY() function that returns a pair (x, y). So > that is a place to start. > > If you want to avoid passing the list around it might make sense to > make a class to hold it. Then you would have something like > class Data(object): > def __init__(self, lst): > self.data = lst > > def getCoord(self, ix): > base = ix*4 > value = self.data[ix]*10 + self.data[ix+1] + self.data[ix+2]/10.0 > if self.data[ix+3] < 5: > value = -value > return value > > Now you can create a Data object from a list of values and ask it for > values: > d = Data(<some list>) > d.getCoord(5) > > I'm not sure this is much improvement over passing around the list, > actually; you still have to pass around the Data object...it might > just be a matter of taste. > > HTH, > Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
