Confused about Tick Data

[airified]

Hi all,

Amateur question - was attempting to download tick data off my platform and when i was going through the data, was suddenly very confused with what tick data's supposed to represent.

Understand from the docs that:

OnTick: The NewTick event is generated for Expert Advisors only when a new tick for a symbol is received, to the chart of which the Expert Advisor is attached.

NewTick: The NewTick event is generated if there are new quotes, it is processed by OnTick() of Expert Advisors attached.

Example of downloaded data for EURGBP:

Time	Open	Close	High	Low	Volume
2017.06.21 10:01:00	0.88261	0.88263	0.88263	0.88261	6
2017.06.21 10:01:00	0.88261	0.88264	0.88264	0.88261	7
2017.06.21 10:01:00	0.88261	0.88265	0.88265	0.88261	8

Confusion:

- When's a NewTick event generated? I have always thought its generated each time the price level changes but that seems to be wrong.

- Given that my chart is set to show bid prices, i assume that these are bid prices but if 1 tick is the smallest price movement, why are there differences between open, close, high and low prices? 

- Does this mean that if i were to download Bid() and Ask() prices for each tick, there will be a Open|Bid, Open|Ask, Close|Bid... - a total of 8 prices?

Any help would be appreciated. Thank you!

[airified]

airified:

Hi all,

Amateur question - was attempting to download tick data off my platform and when i was going through the data, was suddenly very confused with what tick data's supposed to represent.

Understand from the docs that:

OnTick: The NewTick event is generated for Expert Advisors only when a new tick for a symbol is received, to the chart of which the Expert Advisor is attached.

NewTick: The NewTick event is generated if there are new quotes, it is processed by OnTick() of Expert Advisors attached.

Example of downloaded data for EURGBP:

Time	Open	Close	High	Low	Volume
2017.06.21 10:01:00	0.88261	0.88263	0.88263	0.88261	6
2017.06.21 10:01:00	0.88261	0.88264	0.88264	0.88261	7
2017.06.21 10:01:00	0.88261	0.88265	0.88265	0.88261	8

Confusion:

- When's a NewTick event generated? I have always thought its generated each time the price level changes but that seems to be wrong.

- Given that my chart is set to show bid prices, i assume that these are bid prices but if 1 tick is the smallest price movement, why are there differences between open, close, high and low prices? 

- Does this mean that if i were to download Bid() and Ask() prices for each tick, there will be a Open|Bid, Open|Ask, Close|Bid... - a total of 8 prices?

Any help would be appreciated. Thank you!

Apologies - realized that small data set does not show differences in open, close, high and low prices.

Time	Open	Close	High	Low	Volume
2017.06.21 10:01:00	0.88261	0.88263	0.88263	0.88261	6
2017.06.21 10:01:00	0.88261	0.88264	0.88264	0.88261	7
2017.06.21 10:01:00	0.88261	0.88265	0.88265	0.88261	8
2017.06.21 10:01:00	0.88261	0.88264	0.88265	0.88261	9
2017.06.21 10:01:00	0.88261	0.88265	0.88265	0.88261	10
2017.06.21 10:01:00	0.88261	0.88265	0.88265	0.88261	11
2017.06.21 10:01:00	0.88261	0.88267	0.88267	0.88261	12
2017.06.21 10:01:00	0.88261	0.88267	0.88267	0.88261	13
2017.06.21 10:01:00	0.88261	0.8827	0.8827	0.88261	14
2017.06.21 10:01:00	0.88261	0.8827	0.8827	0.88261	15
2017.06.21 10:01:00	0.88261	0.88271	0.88271	0.88261	16
2017.06.21 10:01:00	0.88261	0.88271	0.88271	0.88261	17
2017.06.21 10:01:00	0.88261	0.88272	0.88272	0.88261	18
2017.06.21 10:01:00	0.88261	0.88273	0.88273	0.88261	19
2017.06.21 10:01:00	0.88261	0.88274	0.88274	0.88261	20
2017.06.21 10:01:00	0.88261	0.88273	0.88274	0.88261	21
2017.06.21 10:01:00	0.88261	0.88273	0.88274	0.88261	22
2017.06.21 10:01:00	0.88261	0.88274	0.88274	0.88261	23
2017.06.21 10:01:00	0.88261	0.88276	0.88276	0.88261	24
2017.06.21 10:01:00	0.88261	0.88278	0.88278	0.88261	25
2017.06.21 10:01:00	0.88261	0.88279	0.88279	0.88261	26
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	27
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	28
2017.06.21 10:01:00	0.88261	0.88276	0.88279	0.88261	29
2017.06.21 10:01:00	0.88261	0.88275	0.88279	0.88261	30
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	32
2017.06.21 10:01:00	0.88261	0.88279	0.88279	0.88261	34
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	35
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	36
2017.06.21 10:01:00	0.88261	0.88276	0.88279	0.88261	37
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	38
2017.06.21 10:01:00	0.88261	0.88275	0.88279	0.88261	39
2017.06.21 10:01:00	0.88261	0.88276	0.88279	0.88261	40
2017.06.21 10:01:00	0.88261	0.88275	0.88279	0.88261	41
2017.06.21 10:01:00	0.88261	0.88274	0.88279	0.88261	42
2017.06.21 10:01:00	0.88261	0.88273	0.88279	0.88261	43
2017.06.21 10:01:00	0.88261	0.88273	0.88279	0.88261	44
2017.06.21 10:01:00	0.88261	0.88274	0.88279	0.88261	45
2017.06.21 10:01:00	0.88261	0.88274	0.88279	0.88261	46
2017.06.21 10:01:00	0.88261	0.88273	0.88279	0.88261	47
2017.06.21 10:01:00	0.88261	0.88273	0.88279	0.88261	48
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	49
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	50
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	51
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	52
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	53
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	54
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	56
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	57
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	58
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	59
2017.06.21 10:01:00	0.88261	0.8827	0.88279	0.88261	60
2017.06.21 10:01:00	0.88261	0.88269	0.88279	0.88261	61
2017.06.21 10:01:00	0.88261	0.8827	0.88279	0.88261	62
2017.06.21 10:01:00	0.88261	0.88269	0.88279	0.88261	63
2017.06.21 10:01:00	0.88261	0.8827	0.88279	0.88261	64
2017.06.21 10:01:00	0.88261	0.8827	0.88279	0.88261	65
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	66
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	67
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	68
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	69
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	70
2017.06.21 10:01:00	0.88261	0.8827	0.88279	0.88261	71
2017.06.21 10:01:00	0.88261	0.88269	0.88279	0.88261	72
2017.06.21 10:01:00	0.88261	0.88268	0.88279	0.88261	73
2017.06.21 10:01:00	0.88261	0.88269	0.88279	0.88261	74
2017.06.21 10:01:00	0.88261	0.8827	0.88279	0.88261	75
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	76
2017.06.21 10:01:00	0.88261	0.88271	0.88279	0.88261	77
2017.06.21 10:01:00	0.88261	0.88272	0.88279	0.88261	78
2017.06.21 10:01:00	0.88261	0.88273	0.88279	0.88261	79
2017.06.21 10:01:00	0.88261	0.88274	0.88279	0.88261	80
2017.06.21 10:01:00	0.88261	0.88274	0.88279	0.88261	81
2017.06.21 10:01:00	0.88261	0.88275	0.88279	0.88261	82
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	83
2017.06.21 10:01:00	0.88261	0.88279	0.88279	0.88261	84
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	85
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	86
2017.06.21 10:01:00	0.88261	0.88276	0.88279	0.88261	87
2017.06.21 10:01:00	0.88261	0.88275	0.88279	0.88261	88
2017.06.21 10:01:00	0.88261	0.88276	0.88279	0.88261	89
2017.06.21 10:01:00	0.88261	0.88275	0.88279	0.88261	90
2017.06.21 10:01:00	0.88261	0.88276	0.88279	0.88261	91
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	92
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	93
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	94
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	95
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	96
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	97
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	98
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	99
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	100
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	101
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	102
2017.06.21 10:01:00	0.88261	0.88277	0.88279	0.88261	103
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	104
2017.06.21 10:01:00	0.88261	0.88278	0.88279	0.88261	105