MT4 Series array

时间序列

datetime Time[]

Series array that contains open time of each bar of the current chart. Data like datetime represent time, in seconds, that has passed since 00:00 a.m. of 1 January, 1970.

Series array elements are indexed in the reverse order, i.e., from the last one to the first one. The current bar which is the last in the array is indexed as 0. the oldest bar, the first in the chart, is indexed as Bars-1.

Access to Timeseries and Indicator Data

dynamic arrays

An indicator buffer is a dynamic array of type double, whose size is managed by the client terminals

statically distributed arrays

operations of memory allocations

indexing direction in Arrays, Buffers and Timeseries

The default indexing of all arrays and indicator buffers is left to right. The index of the first element is always equal to zero.

changing the indexing direction: ArraySetAsSeries()

Receiving Price Data in indicators

asynchronous access

Organizing Data Access

Receiving data from a trade server

packed blocks of minute bars

Storing intermediate data

unpack

Synchronization of the terminal data and server data

Obtaining data on a necessary timeframe out of intermediate data

Symbol Properties

MarketInfo(_Symbol, MODE_DIGITS);

SymbolInfoInteger(_Symbol, );

SymbolInfoDouble();

SymbolInfoString();