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evemarketdata item_history data incomplete

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Tiala Skye
Republic Military School
Minmatar Republic
#1 - 2015-03-20 11:43:47 UTC
Greetings

I'm building an app to pull market history data, analyse and report on it using the item_history function on evemarketdata.com

However for a 21day history the vast majority of items are only returning what appears to be a random number of days. Ie id=18 returns the last 12 days and id=19 returns 0 days. Despite both of these being high moving items with the full 21 days available in-game.

If i query again 10 times today I will get the same results. However a couple of days ago the history for id=19 was non-zero, so It's changing on perhaps a daily basis.


Anyone familiar with this?

Thanks
SJ Astralana
Syncore
#2 - 2015-03-20 11:48:52 UTC
When I used EMD it clearly had gaps which would result in stats being understated by a great deal. You're far better off biting the bullet and using Auth Crest, which gives you exactly what you see in the market window.

Hyperdrive your production business: Eve Production Manager

Tiala Skye
Republic Military School
Minmatar Republic
#3 - 2015-03-20 12:11:38 UTC
Oh boy. This rabbit hole is getting deep. Any hints on where to begin with CREST?
Steve Ronuken
Fuzzwork Enterprises
Vote Steve Ronuken for CSM
#4 - 2015-03-20 17:57:31 UTC
Item history is actually available on public crest :)

https://www.fuzzwork.co.uk/market/marketdisplay.php may be of interest.

You can just retreive the json data directly.

If you want to go down the auth route, then it'd help to know which language you're thinking of?

Woo! CSM XI!

Fuzzwork Enterprises

Twitter: @fuzzysteve on Twitter