New chart improvements

Official Expresso Beans Art News.
Locked
User avatar
sunsetbrew
Art Expert
Posts: 3622
Joined: Thu May 29, 2003 12:00 am

Sat Oct 25, 2008 6:04 pm

You may have noticed that the green lines in the price charts is no longer a straight line in many cases. This has been requested by many members over the years. We have expanded it to include a 4th order polynomial regression. For example, http://www.expressobeans.com/public/detail.php/81257. This should help improve everyone's ability to see the trends.

However as with any other statistical model, it does not always do what you might think it should. Don't be surprised to see it bottom or top out on the graph in cases where the data is excessively clumped in one time period. It is like a big rubber hose in that if there is enough force on one part it will sway the rest of the hose wildly at times.

This project, like the Naruto project, has been open sourced as the "Sake" project at Source Forge.
Image
User avatar
kentt
Art Connoisseur
Posts: 468
Joined: Thu Sep 11, 2008 10:23 am

Sat Oct 25, 2008 6:33 pm

Wicked. Thanks!
User avatar
BlakeAronson
Flipper
Posts: 8579
Joined: Sat Jun 17, 2006 12:00 am
Location: Long Beach, CA
Contact:

Sat Oct 25, 2008 7:02 pm

sunsetbrew wrote: 4th order polynomial regression.
NERD
8=====D~~~~
User avatar
sunsetbrew
Art Expert
Posts: 3622
Joined: Thu May 29, 2003 12:00 am

Sat Oct 25, 2008 7:04 pm

They made me do it. :hanging:

I have been avoiding that for a long time. But one night this week I was weak on sake and gave in. I hate to think that hard.
Image
jamel-d
Art Freak
Posts: 10710
Joined: Thu Jun 29, 2006 12:00 am
Location: 19802

Sat Oct 25, 2008 7:26 pm

sunsetbrew wrote:This should help improve everyone's ability to see the trends.
Must have a lot of Sarah Palin supporters here.
Locked