Bitcoin Forum
September 27, 2016, 07:00:04 AM *
News: Latest stable version of Bitcoin Core: 0.13.0 (New!) [Torrent]. Make sure you verify it.
 
   Home   Help Search Donate Login Register  
Pages: « 1 [2]  All
  Print  
Author Topic: Better mtgox chart  (Read 4585 times)
bitcoinex
Sr. Member
****
Offline Offline

Activity: 350


probiwon.com


View Profile WWW
November 19, 2010, 09:57:54 PM
 #21

>And I also know many people who says that mtgox absolutely incorrect shows trading info.

bitcoinex:  What trading info is incorrect?

Open: https://mtgox.com/trade/history
Click on "Last 48 hours". Click again and again and again. You see little changes on the chart?

Your code do something like:
SELECT time, price FROM trades_history ORDER BY time;

But there is almost always a few trades have occurred simultaneously. More precisely, it is the same trade but with a lot of orders. That's why changing the chart. As a minimum, you need to add sort by another field.

But it says more about the problem really is. It is impossible charts with lots of points corresponding to one value of x, unless it's not trigonometry. People see total volume at every x point. And when traded offers contain one with too large or too small price, while showing a large amount of the transaction, they think that the rate has changed a lot, though in fact it is "sticking" the offer was met by ~0.01 bitcoins. I know at least 2 people who trying use it to rate manipulations.

For each x point (each trade) is necessary to calculate the real value of the price (weighted price, for example).


This also suggests (to me) about that 99.99% of bitcoin users is monkey-profiteers and the next six months bitcoin had no prospects. That's why the last few days I write these evil messages.  Angry

New bitcoin lottery: probiwon.com
- Может, ты ещё и в Невидимую Руку Рынка веруешь? - Зачем же веровать в то, что можно наблюдать непосредственно?
1474959604
Hero Member
*
Offline Offline

Posts: 1474959604

View Profile Personal Message (Offline)

Ignore
1474959604
Reply with quote  #2

1474959604
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
S3052
Legendary
*
Offline Offline

Activity: 1918


BTC Up or Down? go to www.bullbearanalytics.com


View Profile WWW
November 19, 2010, 10:03:39 PM
 #22

agree with your logic about the better accuracy if weighted price poer trade would be shown, ... but ... if you want good charts, why don't you go to bitcoincharts.com and get them?

you don't need to go to the nyse.com to get good charts

>15years analysis experience

Always do your own due diligence & consult your financial advisor. Never invest unless you can afford to lose your entire investment.

http://twitter.com/BitcoinAnalyst

Subscribe here
S3052
Legendary
*
Offline Offline

Activity: 1918


BTC Up or Down? go to www.bullbearanalytics.com


View Profile WWW
November 19, 2010, 10:22:55 PM
 #23

well... I believed that  bitcoincharts.com shows each individual trade also from mtgox  on the homepage. Then bitcoincharts.com could calculate the weighted average trade price and then create the corresponding point on the charts.

I apologize if I am mistaken.

>15years analysis experience

Always do your own due diligence & consult your financial advisor. Never invest unless you can afford to lose your entire investment.

http://twitter.com/BitcoinAnalyst

Subscribe here
bitcoinex
Sr. Member
****
Offline Offline

Activity: 350


probiwon.com


View Profile WWW
November 19, 2010, 10:30:40 PM
 #24

Probably yes, anyway, do not be offended.

A few months no one noticed this problem or what? Forest of dots-trees?

It is not even about a specific problem but about people who create the weather on the market. Today I have "earned" $110.26 on the bitcoin market but I still see that then what we do here is nonsense.

New bitcoin lottery: probiwon.com
- Может, ты ещё и в Невидимую Руку Рынка веруешь? - Зачем же веровать в то, что можно наблюдать непосредственно?
tcatm
Sr. Member
****
Offline Offline

Activity: 337


View Profile
November 19, 2010, 10:37:46 PM
 #25

well... I believed that  bitcoincharts.com shows each individual trade also from mtgox  on the homepage. Then bitcoincharts.com could calculate the weighted average trade price and then create the corresponding point on the charts.

I'm not averaging trades, but I'm aware (and annoyed) of the problem. It's especially annoying for the last traded price when it jumps between 0.25 and 0.28 on every refresh. Not sure what I'll do to fix it, but it's on my todo.
bitcoinex
Sr. Member
****
Offline Offline

Activity: 350


probiwon.com


View Profile WWW
November 19, 2010, 10:51:05 PM
 #26

well... I believed that  bitcoincharts.com shows each individual trade also from mtgox  on the homepage. Then bitcoincharts.com could calculate the weighted average trade price and then create the corresponding point on the charts.

I'm not averaging trades, but I'm aware (and annoyed) of the problem. It's especially annoying for the last traded price when it jumps between 0.25 and 0.28 on every refresh. Not sure what I'll do to fix it, but it's on my todo.

Now you have no choice but to get average price for each time stamp and sum value for each time stamp before process trade data.

New bitcoin lottery: probiwon.com
- Может, ты ещё и в Невидимую Руку Рынка веруешь? - Зачем же веровать в то, что можно наблюдать непосредственно?
tcatm
Sr. Member
****
Offline Offline

Activity: 337


View Profile
November 19, 2010, 10:54:35 PM
 #27

Now you have no choice but to get average price for each time stamp and sum value for each time stamp before process trade data.

I can just do the weighted averaging within the SQL query. This might be okay for charts, but I'm not sure if a "calculated" closing price is a good idea for the overview page. For now I'll make the order fixed to whatever mtgox provided.
Pages: « 1 [2]  All
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!