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SymbolExt

Interface

Properties​

base_name​

Optional

Array of base symbols Example: for AAPL*MSFT it is ['NASDAQ:AAPL', 'NASDAQ:MSFT']

Type​

​[string]

build_seconds_from_ticks​

Optional

The boolean value showing whether or not seconds bars for this symbol can be built from ticks. Only available in Trading Platform.

The library builds resolutions from ticks only if there are no seconds resolutions from the datafeed or the provided resolutions are larger then the required one. For example, the datafeed provides 3S resolution. In this case, the library can build only 1S or 2S resolutions from ticks. Resolutions such as 15S will be build with seconds bars.

Default

false

Type​

​boolean

corrections​

Optional

List of corrections for a symbol. The corrections are days when the trading session differs from the default one set in LibrarySymbolInfo.session. The corrections value is a string in the following format: SESSION:YYYYMMDD. For more information, refer to corrections.

The string below specifies corrections for two trading days:

  • November 13, 2018. This trading day is split into two sessions. The first session starts at 19:00 four days before (November 9, 2018) and ends at 23:50 four days before. The second session starts at 10:00 and ends at 18:45.
  • November 14, 2018. The session starts at 10:00 and ends at 14:00.

Example

"1900F4-2350F4,1000-1845:20181113;1000-1400:20181114"

Type​

​string

currency_code​

Optional

The currency in which the instrument is traded or some other currency if currency conversion is enabled. It is displayed in the Security Info dialog and on the price axes.

Type​

​string

daily_multipliers​

Optional

Array (of strings) containing the resolutions (in days - without the suffix) supported by the datafeed. ResolutionString

For example it could be something like

daily_multipliers = ['1', '3', '4', '6', '7'];

Default

['1']

Type​

​string[]

data_status​

Optional

The status code of a series with this symbol. For delayed_streaming and endofday type of data, the status is displayed as an icon and the Data is delayed section in the Legend, next to the market status icon. Note that you should also enable the display_data_mode featureset.

When declaring delayed_streaming you also have to specify its LibrarySymbolInfo.delay in seconds.

Type​

​"streaming" | "endofday" | "delayed_streaming"

delay​

Optional

Type of delay that is associated to the data or real delay for real time data.

  • 0 for realtime
  • -1 for endofday
  • or delay in seconds (for delayed realtime)

Type​

​number

description​

The description of the symbol. Will be displayed in the chart legend for this symbol.

Type​

​string

exchange​

Traded exchange (current (proxy) exchange). The name will be displayed in the chart legend for this symbol.

Example

"NYSE"

Type​

​string

Optional

URL of image to be displayed as the logo for the exchange. The show_exchange_logos featureset needs to be enabled for this to be visible in the UI.

The image should ideally be square in dimension. You can use any image type which the browser supports natively. Simple SVG images are recommended.

Examples:

  • https://yourserver.com/exchangeLogo.svg
  • /images/myImage.png
  • data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3...
  • data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAASABIAAD/4...

Type​

​string

expiration_date​

Optional

Unix timestamp of the expiration date. One must set this value when expired = true. The library will request data for this symbol starting from that time point.

Type​

​number

expired​

Optional

Boolean showing whether this symbol is expired futures contract or not.

Default

false

Type​

​boolean

format​

Format of displaying labels on the price scale:

price - formats decimal or fractional numbers based on minmov, pricescale, minmove2, fractional and variableMinTick values. See Price format for more details. volume - formats decimal numbers in thousands, millions, billions or trillions

Type​

​SeriesFormat

fractional​

Optional

For common prices this can be skipped.

Fractional prices are displayed 2 different forms: 1) xx'yy (for example, 133'21) 2) xx'yy'zz (for example, 133'21'5).

  • xx is an integer part.
  • minmov/pricescale is a Fraction.
  • minmove2 is used in form 2.
  • fractional is true.
  • variableMinTick is skipped.

Example:

If minmov = 1, pricescale = 128 and minmove2 = 4:

  • 119'16'0 represents 119 + 16/32
  • 119'16'2 represents 119 + 16.25/32
  • 119'16'5 represents 119 + 16.5/32
  • 119'16'7 represents 119 + 16.75/32

More examples:

  • ZBM2014 (T-Bond) with 1/32: minmov = 1, pricescale = 32, minmove2 = 0
  • ZCM2014 (Corn) with 2/8: minmov = 2, pricescale = 8, minmove2 = 0
  • ZFM2014 (5 year t-note) with 1/4 of 1/32: minmov = 1, pricescale = 128, minmove2 = 4

Type​

​boolean

has_daily​

Optional

The boolean value specifying whether the datafeed can supply historical data at the daily resolution.

If has_daily is set to false, all buttons for resolutions that include days are disabled for this particular symbol. Otherwise, the library requests daily bars from the datafeed. All daily resolutions that the datafeed supplies must be included in the LibrarySymbolInfo.daily_multipliers array.

Default

true

Type​

​boolean

has_empty_bars​

Optional

The boolean value showing whether the library should generate empty bars in the session when there is no data from the data feed for this particular time.

I.e., if your session is 0900-1600 and your data has gaps between 11:00 and 12:00 and your has_empty_bars is true, then the Library will fill the gaps with bars for this time.

Flag has_empty_bars = true cannot be used if featureset disable_resolution_rebuild is enabled.

Default

false

Type​

​boolean

has_intraday​

Optional

Boolean value showing whether the symbol includes intraday (minutes) historical data.

If it's false then all buttons for intraday resolutions will be disabled for this particular symbol. If it is set to true, all intradays resolutions that are supplied directly by the datafeed must be provided in intraday_multipliers array.

WARNING Any daily, weekly or monthly resolutions cannot be inferred from intraday resolutions.

false if DWM only

Default

false

Type​

​boolean

has_seconds​

Optional

Boolean value showing whether the symbol includes seconds in the historical data.

If it's false then all buttons for resolutions that include seconds will be disabled for this particular symbol.

If it is set to true, all resolutions that are supplied directly by the data feed must be provided in seconds_multipliers array.

Default

false

Type​

​boolean

has_ticks​

Optional

Boolean value showing whether the symbol includes ticks in the historical data.

If it's false then all buttons for resolutions that include ticks will be disabled for this particular symbol.

Default

false

Type​

​boolean

has_weekly_and_monthly​

Optional

The boolean value showing whether data feed has its own weekly and monthly resolution bars or not.

If has_weekly_and_monthly = false then the library will build the respective resolutions using daily bars by itself. If not, then it will request those bars from the data feed using either the weekly_multipliers or monthly_multipliers if specified. If resolution is not within either list an error will be raised.

Default

false

Type​

​boolean

industry​

Optional

Industry for stocks to be displayed in the Security Info.

Type​

​string

intraday_multipliers​

Optional

Array of resolutions (in minutes) supported directly by the data feed. Each such resolution may be passed to, and should be implemented by, getBars. The default of [] means that the data feed supports aggregating by any number of minutes.

If the data feed only supports certain minute resolutions but not the requested resolution, getBars will be called (repeatedly if needed) with a higher resolution as a parameter, in order to build the requested resolution.

For example, if the data feed only supports minute resolution, set intraday_multipliers to ['1'].

When the user wants to see 5-minute data, getBars will be called with the resolution set to 1 until the library builds all the 5-minute resolution by itself.

Example

(for ex.: "1,5,60") - only these resolutions will be requested, all others will be built using them if possible

Default

[]

Type​

​string[]

library_custom_fields​

Optional

Additional metadata to include with the symbol information. These parameters will not affect existing properties such as 'ticker' or 'name' and will not be processed by the library. However, they can be accessed later through the IChartWidgetApi.symbolExt method, impacting existing properties such as 'ticker' or 'name'.

Type​

​Record<string, unknown>

listed_exchange​

short name of the exchange where this symbol is traded (real listed exchange). The name will be displayed in the chart legend for this symbol.

Example

"NYSE"

Type​

​string

logo_urls​

Optional

URL of image/s to be displayed as the logo/s for the symbol. The show_symbol_logos featureset needs to be enabled for this to be visible in the UI.

  • If a single url is returned then that url will solely be used to display the symbol logo.
  • If two urls are provided then the images will be displayed as two partially overlapping circles with the first url appearing on top. This is typically used for FOREX where you would like to display two country flags are the symbol logo.

The image/s should ideally be square in dimension. You can use any image type which the browser supports natively.

Examples:

  • https://yourserver.com/apple.svg
  • /images/myImage.png
  • data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3...
  • data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAASABIAAD/4...

Type​

​[string, string] | [string]

long_description​

Optional

Symbol Long description

Optional long(er) description for the symbol.

Type​

​string

minmov​

The number of units that make up one tick. For example, U.S. equities are quotes in decimals, and tick in decimals, and can go up +/- .01. Therefore, the tick increment is 1 and minmov = 1. But the e-mini S&P futures contract, though quoted in decimals, goes up in .25 increments, so the tick increment is 25 and minmov = 25. Refer to Price format for more information.

Type​

​number

minmove2​

Optional

This property is used to display prices in the fraction of a fraction format. For example, the ZBM2023 tick size is 1/4 of a 32nd. To display this security, set minmov = 1, pricescale = 128, minmove2 = 4.

For common prices, minmove2 can be skipped or set to 0.

Type​

​number

monthly_multipliers​

Optional

Array (of strings) containing the resolutions (in months - without the suffix) supported by the data feed. ResolutionString

For example it could be something like

monthly_multipliers = ['1', '3', '4', '12'];

Default

['1']

Type​

​string[]

name​

It is a symbol name within an exchange, such as AAPL or 9988 (Hong Kong). Note that it should not contain the exchange name. This symbol name is visible to users and can be repeated.

By default, name is used to resolve symbols in the Datafeed API. If you use LibrarySymbolInfo.ticker, the library will use the ticker for Datafeed API requests.

Type​

​string

original_currency_code​

Optional

The currency in which the instrument is traded.

Type​

​string

original_unit_id​

Optional

A unique identifier of a unit in which the instrument is traded.

Type​

​string

price_source_id​

Optional

Optional ID of a price source for a symbol. Should match one of the price sources from the price_sources array.

Note that you should set the symbol_info_price_source featureset to true to display the symbol price source in the main series legend.

Type​

​string

price_sources​

Optional

Supported price sources for the symbol. Price sources appear in the series legend and indicate the origin of values represented by symbol bars. Example price sources: "Spot Price", "Ask", "Bid", etc. The price source information is valuable when viewing non-OHLC series types.

Note that you should set the symbol_info_price_source featureset to true to display the symbol price source in the main series legend.

Example

[{ id: '1', name: 'Spot Price' }, { id: '321', name: 'Bid' }]

Type​

​SymbolInfoPriceSource[]

pricescale​

A number of decimal places or fractions that the price has.

The pricescale value depends on the price format. If you want to display the price in the decimal format, pricescale should be 10^n, where n is the number of decimal places. Examples: 1, 10, 10000000.

If you want to display the price in the fractional format, pricescale should be 2^n. This value represents the number of fractions. Examples: 8, 16, 256.

Type​

​number

seconds_multipliers​

Optional

It is an array containing resolutions that include seconds (excluding postfix) that the data feed provides. E.g., if the data feed supports resolutions such as ["1S", "5S", "15S"], but has 1-second bars for some symbols then you should set seconds_multipliers of this symbol to [1]. This will make the library build 5S and 15S resolutions by itself.

Type​

​string[]

sector​

Optional

Sector for stocks to be displayed in the Security Info.

Type​

​string

session​

Trading hours for the symbol. The time should be in the exchange time zone specified in the LibrarySymbolInfo.timezone property. Refer to the Trading sessions article for more information.

Example

"1700-0200"

Type​

​string

session_display​

Optional

The session value to display in the UI. If not specified, then session is used.

Type​

​string

session_holidays​

Optional

A string that contains a list of non-trading holidays for the symbol. Holiday dates should be in the YYYYMMDD format. These dates are not displayed on the chart.

You can specify a correction for a holiday using LibrarySymbolInfo.corrections.

Example

"20181105,20181107,20181112"

Type​

​string

subsession_id​

Optional

An ID of a subsession specified in subsessions. The value must match the subsession that is currently displayed on the chart. For more information, refer to the Extended sessions section.

Type​

​string

subsessions​

Optional

An array of objects that contain information about certain subsessions within the extended session. For more information, refer to the Extended sessions section.

Type​

​LibrarySubsessionInfo[]

supported_resolutions​

Optional

An array of resolutions which should be enabled in the Resolution drop-down menu for this symbol. Each item of the array is expected to be a string that has a specific format.

If one changes the symbol and the new symbol does not support the selected resolution, the resolution will be switched to the first available one in the list.

Resolution availability logic (pseudocode):

resolutionAvailable  =
    resolution.isIntraday
        ? symbol.has_intraday && symbol.supported_resolutions(resolution)
        : symbol.supported_resolutions(resolution);

If supported_resolutions is [] (empty array), all resolutions are disabled in the Resolution drop-down menu.

If supported_resolutions is undefined, all resolutions that the chart support (DatafeedConfiguration.supported_resolutions) and custom resolutions are enabled.

Note that the list of available time frames depends on supported resolutions. Time frames that require resolutions that are unavailable for a particular symbol will be hidden. Refer to Time frame toolbar for more information.

Type​

​ResolutionString[]

ticker​

Optional

It is an unique identifier for a particular symbol in your symbology. If you specify this property, its value will be used for all data requests for this symbol. ticker will be treated the same as LibrarySymbolInfo.name if not specified explicitly. Note that it should not contain the exchange name.

Type​

​string

timezone​

The time zone of the exchange where the symbol is listed. The time zone value should be in the OlsonDB format. Refer to Time zones for a full list of supported time zones.

Type​

​Timezone

type​

Type of the instrument. Possible values: SymbolType

Type​

​string

unit_conversion_types​

Optional

Allowed unit conversion group names.

Type​

​string[]

unit_id​

Optional

A unique identifier of a unit in which the instrument is traded or some other identifier if unit conversion is enabled. It is displayed on the price axes.

Type​

​string

variable_tick_size​

Optional

Dynamic minimum price movement. It is used if the instrument's minimum price movement changes depending on the price range.

For example, '0.01 10 0.02 25 0.05', where the tick size is 0.01 for a price less than 10, the tick size is 0.02 for a price less than 25, the tick size is 0.05 for a price greater than or equal to 25.

Type​

​string

visible_plots_set​

Optional

Represents what values are supported by the symbol. Possible values:

  • ohlcv — the symbol supports open, high, low, close prices and has volume.
  • ohlc — the symbol supports open, high, low, close, prices but doesn't have volume.
  • c — the symbol supports only close price. This makes the chart show the symbol data using only line-based styles.

Default

'ohlcv'

Type​

​VisiblePlotsSet

volume_precision​

Optional

Integer showing typical volume value decimal places for a particular symbol. 0 means volume is always an integer. 1 means that there might be 1 numeric character after the comma.

Default

'0'

Type​

​number

weekly_multipliers​

Optional

Array (of strings) containing the resolutions (in weeks - without the suffix) supported by the data feed. ResolutionString

For example it could be something like

weekly_multipliers = ['1', '5', '10'];

Default

['1']

Type​

​string[]