Processing time and memory allocation
Author: mikael
Creation Date: 10/8/2008 5:08 PM
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mikael

#1
Hi there

I've been very merrily building my own indicators. They're not of Ehler's sophistication, but well.

In Wealth-Lab 4 the way you built a series meant that the indicator name space was searched before running the code to build the indicat, which that meant that you could just call the series directly. In Wealth-Lab 5 it is unclear to me whether this is still the case. If I define a piece of code like (,which I made up for fun just now):
CODE:
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and then make a call like
CODE:
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what actually happens? Is the Log series built Count * 2 times, where processing time and memory would be gobbled up, or is it handled analogously to Wealth-Lab 4 through the base class DataSeries, where the only processing time is the searching of a name space. Naturally, this will have an input on code design.

Cheers
M
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Cone

#2
That's what happens in your example, yes, so you better not do it that way! Formal indicators have a caching mechanism to avoid that. To use any informal indicator like yours, assign it to a DataSeries variable and then use the index method.

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Although the API documentation is being reviewed (like how to create a formal indicator), you can refer to the WealthScript Programming Guide for more information about indicators.
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mikael

#3
OK, but I assume this DataSeries will get cached and thus enable me to continue in the Wealth-Lab 4.x way of doing things.

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Cone

#4
Either method is the 4x way of doing things. But sure, if you want to going through the trouble of adding a caching mechanism, then it will work. The point is that it's not necessary to cache "informal" indicators when you know to write code that creates the series only once.
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mikael

#5
Unless of course the indicators are used with abandon inside other indicators then the code gets downright ugly.
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