# Thread: Function Point analysis by phase

1. ## Function Point analysis by phase

Hi folks,

I'd like to post a q about the usage of tracking a project using FPA.

Now, I have a basic understanding of FPA, and from what I could gather, it seems that FPA can be used to develope the size and time estimates for a project fair enough.

However, my question is, how would you measure the progress of a project wrt FP? For example, assume that I have the standard phases of a Waterfall model i.e Planning, Req, Design, Coding+UT, IT and Sys Testing. Now, how would I go about measuring the FP values over these phases. Like, if I have a total estimation of 4000 FPs for the whole project, how would I know how it gets distributed over each of these phases? Against what would I measure the progress of the project, and how during the execution of the project?

Help appreciated,
BP.

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2. ## Re: Function Point analysis by phase

http://www.site.uottawa.ca/~misbah/s...Estimation.doc
http://www.dacs.dtic.mil/databases/u....hts?keycode=7

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3. ## Re: Function Point analysis by phase

Thanks for the help ! I'll definitely check out those links given.

Cheers,
BP.

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4. ## Re: Function Point analysis by phase

In the FP counting practice, the fucntionality of the whole system is counted, ie you get a size of the system as from a business users perspective. If you ook at the orignal waterfall model description, you will find that each phase (AN/DS/CUT/Testing) pertain to building the entire system. So your FP count would apply to each phase individually as well as for the entire system.

A direct usage would be to arrive at the average productivity of each phase - (Productivity = FP/ Effort expended) and of the overall system as well.

For more inputs on the FP counting practices, you visit the IFPUG site.

5. ## Re: Function Point analysis by phase

Adding more to my earlier response.
One important aspect you need to remember when you use FP couting practices, is that FP give you only size of s/w to be developed / being enhanced. So if you want to track progress, etc you will need to use derived metrics.
First to convert the size into effort you will need something like a standard productivity. (Standard productivites are not very common to come by - Capers Jones has some values). another way to get a standard productivity, it to arrive at one. You coudl run a proect and get the productivity from that, which could then be used furhter. From productivity, you could then arrive at Effort related metrics.

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