Clarifying meaning of 'Tick'

[magick93]

Hi

Correct me if I am wrong, but it seams that ta4j considers a tick to have a time span, eg a tick of 1 minute in length - is this correct?

A Tick contains aggregated data of a security/commodity during a time period.

Usually, especially in forex trading, an aggregation of price changes for a period of time is a Bar, eg, the min, max, first and last (OHLC) for one minute. During this minute there can be 100s of ticks.

Does ta4j have the concept of bars also?

What is the reason for giving ticks a time span?

[martinklepsch]

There is an issue with discussion about this question already, I think you can find it if you search issues for "bar" or so.

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On Tue, Aug 29, 2017, 12:52 magick93 ***@***.***> wrote: Hi Correct me if I am wrong, but it seams that ta4j considers a tick to have a time span, eg a tick of 1 minute in length - is this correct? A Tick contains aggregated data of a security/commodity during a time period. Usually, especially in forex trading, an aggregation of price changes for a period of time is a Bar, eg, the min, max, first and last (OHLC) for one minute. During this minute there can be 100s of ticks. Does ta4j have the concept of bars also? What is the reason for giving ticks a time span? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#184>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAF82PSuClUOZ3rFVwiJmJs4wHeE700Sks5sc-2BgaJpZM4PFuqL> .

[team172011]

If you take a closer look to the Tick class you can find out that a tick describes some kind of bar. There are among others close, min, max, and open price attributes. The 'time span' describes the time span for that this attributes are valid. You can but not have to give ticks a time span, you just have to give at least an end time for each tick.

[martinklepsch]

I added a note to the wiki noting this difference: https://github.com/mdeverdelhan/ta4j/wiki/Time-series-and-ticks

[martinklepsch]

(I guess this issue should be closed to keep discussion focused in #139.)

[mdeverdelhan]

Duplicate of #139