Posted - 2008.02.04 18:47:00 - [1]

 

Edited by: Bellatroix on 15/02/2008 04:17:18
Hey Eve Techies,

Updated 2008-02-14 - new main page for median price info and price dumps: Bellatroix' Median Price Feeds. Now available are medians of every type in every region. I will likely be adding a little more information to these files in the future (data such as the number of buy orders seen and other information which will help intelligent use of the numbers). I am also likely to add gzipped versions of these files to save on bandwidth.

I've thrown together a small online app that retrieves median prices based on eve-central data. It's a little rough right now, but I believe it gets prices that are a little more resistant to skewing from stupidly high sell orders and low buy orders. I also believe that eve-central will be implementing medians in their feeds at some point in the future, but this can be a useful stopgap measure until that is actually finished. Usage is simple:

http://nonninja.net/eve/prices/median/{TYPEID}

So, for an Iteron I (a particularly skewed average sell price), the URL is:

http://nonninja.net/eve/prices/median/650

This returns a very, very simple XML document with the type id, median buy price, and median sell price.

Update: There's now two more URLs that contain all items that I have prices for:

http://nonninja.net/eve/prices/medians.xml (size: ~600k)
http://nonninja.net/eve/prices/medians.txt (size: ~100k)

These should be relatively simple to understand the structure and use for whatever you want. These files are generated daily - the generation timestamp is included in the XML file near the top.

This is currently looking at all orders seen in the last 3 months or so as reported to eve-central (I'm using the daily file dumps and import those into my own database at about 4am EST). It also is not currently able to filter by date or region as these will probably be handled by eve-central eventually.

Anyway, I threw this together for myself and have noticed more asset list applications popping up that have been running into similar price problems that I have so I though I'd just throw it out there for anyone to use. As usual with a service like this, please don't hammer my server too hard.