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[bigjacko] 05/4/2004 11:52

Nice one David - alas, I've only just seen your post, but I hope you had a good weekend anyway. Same to you too, Hooya.

Looking forward to next week, so we can test out this FTSE thing ;)

[hooya] 02/4/2004 17:24

Cracking stuff. Have a great one too!

[fross] 02/4/2004 17:21

hi guys,

as it happens, i just started some preliminary designs for a tick chart thing today. *grin* i must be psychic or something. it'll take a while to materialize but should fill the gap of people who want that sort of information!

still looking at the ftse thing, it should be fixed next week, i'm hoping.

have a good weekend!

DavidW

[hooya] 02/4/2004 13:01

thats why in theroy we should be looking at tick charts displayed using a dot. Thats way you will be able to see very single gap if you wish. BUt candle sticks are great as they show the h/l range, whether bull /bear won the period. Great stuff Prefer them to line charts. But would love a dot chart we could set to tick, 1 or 2 min

[bigjacko] 02/4/2004 12:49

Hooya, yes, I knew about UKX being in 15-sec ticks - I was just trying to give David a picture of what other providers did with that data, in case it was relevant/useful to him.

Bear in mind, there are no 'candles' to speak of, on a tick chart. I simply see a small line (the width of a candle) at the appropriate point in time - effectively, the current price forms the OHL and C of the candle, on the tick chart, and there are 15 sec horizontal spaces in between each tick. There are, consequently, large vertical gaps in between each 'doji', as the price changes each time.

[hooya] 02/4/2004 11:15

BJ, ethe FTSE 100 is only updated ever 15 secs so every provider should get the same. interesting that they stamp the time at 2 and not 00. I assume the candles get made imbetween a FTSE tick and not just before i.e candle finishes at 10:00:01 and the next one starts at 10:00:02 thus starting a candle at the point of a new tick thus creating a gap? if the canlde finished at 10 and the next one started at 10:00:01 before a new tick the close of one would equal the open of the next

[bigjacko] 02/4/2004 11:07

David - in case it helps, I can confirm that if I examine the GNI 'all ticks' view, I get the same granularity - one tick every 15 seconds.

The ticks seem to be timestamped at 2, 16, 31, 46 seconds past each minute, roughly. There are some differences as the day progresses, but this is probably just rounding. Curiously, the first tick at 08:00:02 was NOT followed by a tick at 08:00:16 today... it was just missed out, and the next showed up at 08:00:31.

What's the anomaly you think you've just found? I mean, how is it affecting what's drawn? Care to share? It might be useful to know.

[fross] 01/4/2004 15:05

an FYI,

i'm delayed on handling this charting auction activity post i promised, however we've been looking at the ftse opening thing and there may be a separate anomaly there, will keep you posted. it's mostly due to the fact that the ftse updates every 15 seconds rather than on every change, so its granularity is not as high as other epics.

DavidW

[hooya] 01/4/2004 08:40

auction was a .1 change so hence why it looks fairly normal today

[mgmoore] 01/4/2004 08:38

I didn't see last night but did the auction affect the price, because the last candle yesterday is within .1 of the official close.

[hooya] 01/4/2004 08:04

I got all excited this morning when the candle started from the close but I had to redraw the chart and now it shows a gap:-(

[bigjacko] 31/3/2004 15:46

I dunno, Hooya... I think the thread title is all-encompassing enough for both those topics to fit under it easily enough.

David's now seen the evidence (re different feeds resulting in different candles on the 5min DOW here and on GNI), and we've touched on how there shouldn't be any intraday candle gaps if the timeperiods are adhered to strictly, and not just the first trades in each timeperiod.

I'm hoping he can address those, once the current auction-candle issue is resolved, without us having to dig out too much more info ;o)

[hooya] 31/3/2004 15:05

no probs and agree 99% of the time they are very responsive. On the whole I am very happy with the issue solving at ADVFN. This was a slightly difference in this case as ADVFN did not agree there was a problem. Anyway that seems to be in the past and DAvid is on the case now> Woo Hoo. Now is it time to start the thread on how there should be no gaps between candles intraday or how our data feeds might be up to 5 second delayed? Both interesting topics but think I will have a break from thread topics:-)

[bigjacko] 31/3/2004 14:59

Sorted - nice one.

Hooya - I really mean no disrespect, and I can feel your pain too. I didn't know about the beta-tester prizes you'd won - and I do respect your input. I too, spend a LOT of time digging out bugs, and trying to represent them in ways that I think makes them easier to fix.. and it's sometimes an unrewarding struggle in the short-term. We both share that 'joy', I'm sure. :o)

But I sensed a certain amount of anger, that's all... I get it too (especially after telling the thousandth person for the thousandth time how to read the instructions which are there on the link I just gave them... ten times)...

Now I know your 'back-story', I understand :o) No offence caused, I hope, by my mentioning it.

But one thing I have noticed - although it's always us 'squeaky wheels' that gets the oil first, mostly... I've managed for the most part to get things done without having to get too heated at ADVFN. Sometimes a drop of understanding of the situation there at ADVFN Towers (even beyond the point where it's really hard to bear) can smooth things a little, and get things done quicker.

FWIW, I am sure they DO want this stuff fixed, long term. But as ever, we are unaware of the workloads, priorities set by others for them, budgets, and all the usual yadayada that goes on in any firm. In comparison to many others, ADVFN, for all its faults, is a damned sight more responsive than virtually ALL the other places which whom it's been my misfortune to try and raise points like this.

Anyway - looks like a done deal. Two weeks turnaround - that's actually a good score, Hooya - to your credit again :o)


Now, if only they could fix the advanced search tool which they fixed by 'turning it off' when I bug-reported it a couple of weeks ago.... ;o)

[hooya] 31/3/2004 13:38

Sounds great to me Thanks

[fross] 31/3/2004 13:37

guys,

i'm going to trundle off and throw down some ideas for different ways to implement this, with some sample screenshots and stuff for you to mull over. this may take me a little while but i should get back with something today or tomorrow, your input will be most valuable.

DavidW

[hooya] 31/3/2004 13:09

And I want this point to stand out above all others so far.


"advfn have been charting the FTSE this way for some CONSIDERABLE amount of time"

THIS IS NOT TRUE. HENCE i NOTICED A CHANGE IN THE WAY CHARTS WERE DRAWN. IF YOU WANT TO LOOK BACK OVER MARCH AND PLAY SPOT THE CHANGE IM SURE YOU WILL . IM QUITE TIRED OF POSTING EXMPLES AND CHARTS ETC SO IM NOT GOING TO BOTHER BUT UP UNTIL RECENTLY THE FIRST CANDLE OF THE DAY STARTED .......FROM THE AUCTION CLOSE.

[hooya] 31/3/2004 12:41

a simple solution:- set the firstc candle to start at 7.59.58 for the time being, Then everyone can debate the ins and out os candlestcik charting afterwards????

[bigjacko] 31/3/2004 12:28

BTW - Hooya - one thing I realised I missed, on re-reading my post. You were the first to notice and mention it, I said... but I missed "AND WELL DONE INDEED, FOR THAT!" :o)

I'm as grateful to you for pointing it out, as I am to David for the eventual fix. ;o)

[bigjacko] 31/3/2004 12:06

Not sure quite what else to add, David, from here. It's patently obvious (to me, at least), that 'all charts are NOT created equal, and that there's a lot of differences of opinion between providers, as to what consitutes the 'right' way to draw the FTSE.

I'll try and have a shufty at Bigcharts and see what they do with UKX, in case there is a consensus.

Personally, I'm of the opinion that the evening closing candle should include the auction - but NOT include the time involved (so effectively we are considering that the auction close actually happened right on 16:30, in terms of participation'). That would have the effect of giving me clear signals about what the market wanted to happen. Imho, 'Mr Market' plays perhaps MORE in the auctions, than it does in the final period of 'open market', cos auctions are a 'traders & institutions thing' that the 'punters' aren't usually involved in. And we all know how much punters REALLY affect the market, compared to the big money, don't we...? lol

I prefer to know the score, before the morning, cos that's handy for researching overnight (rather than in a rush first thing).

Obivously the morning candle can then be drawn either the 'official' way (and have its open as the post-evening-auction close, or you can just start it from the 08:00 first tick... the point is, we will see where the auction took us (if at the expense of the last true close of the open market, which I don't really care too much about, compared to the 'official close').

I get the impression Hooya would be ok with that too - his problem seems to be that we have NO indication of the auctions at all, and I would agree, that is wrong to do, really.

Anyone else got any views? Will try and pop back when I have some time to do some screenshotting of Bigcharts, etc (unless some kind soul feels like having a go themselves)

[hooya] 31/3/2004 11:57

"keep it up"

no we have reached a concensus. the offcicial close !!!has!!! to be included either in the last candle of the day or in the first of the next. You chose. We dont need to delay on this any further.

[fross] 31/3/2004 11:54

some excellent points, guys, we're still watching this one. pass the popcorn!

one thing i will say is that while it seems nobody can decide on the best way to represent data sometimes, one thing we'll do is tell you exactly what we are showing you (in as much technical detail as you can take! *grin*), so that there's no ambiguity.

keep it up! :)

DavidW