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At 05:04 PM 1/17/2005, you wrote:
>I am not sure about your Global Variable example but I am sure that you
>RadarScreen example is just for finding the symbols that fulfill the
>criteria but not for backtesting it?
The picture was a way to do it for any given day. For backtesting that technique, you would have to automate that using something like MacroExpress.
>Thinking about your GV example, how to allocate 20% of the overall portfolio
>value to each trade.
You can do pretty much anything using global variables. I would probably write an indicator for RadarScreen and have it do the calculations on each symbol and write the output to global variables.
I would then have a chart running an indicator that read all the data from the global variables and decide what to buy when. I would have to do my own portfolio arithmetic but that is not hard.
I didn't mean to imply that TS is perfect for complex portfolio problems. It was mostly designed to trade a single symbol and everything else is a kludge, but it can be done with some effort.
Almost every software product is designed to do some things very well and as a result, using it for tasks it was not designed for takes a lot of effort and skill.
>But I can see that you are a programmer and one of the better once.
>
>BTW, Wealth-Lab was a one man programmer designing and programming the web
>site and the desktop software at the start. So all you need to do is find a
>GENIUS and you get things done quite quickly. :)
One programmer is always the most efficient since he doesn't have to convince or communicate with anyone else. The productivity goes up sort of like the square root of the number of programmers. Perhaps it even goes down if the number of programmers gets too big. (See the famous book, "The Mythical Man-Month". <http://tinyurl.com/62ol4>)
But programming is a small part of the total effort, which includes documentation, training materials, internal (alpha) testing, revision control, regression testing on old versions of customers code, testing on various versions of the OS and graphics cards, managing beta testers, customer support, etc., etc., etc.
Bob Fulks
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