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==Understanding Custom Futures==
Not all data sources provide continuous data(see [[Which Data Sources Support Expired and Continuous Futures Contracts]]). If continuous futures data is not provided by your data feed , you can create continuous symbols within MultiCharts.<br>
Custom Futures is a symbol combined from the individual futures contracts. The data series of Custom Futures is created by rolling over the data of the individual contracts added to the QuoteManager.<br>
* The resolutions available for Custom Futures are 1 Day and lower (tick, point, contract, change, second, minute).
* Only the Regular Chart type is available for custom futuresCustom Futures.
* Bar Magnifier Mode is not available for Custom Futures.
Some data feeds provide data for expired contracts. Expired contracts may not be available through the lookup window, such contracts should be added manually.
See [[Operating Symbol List#Adding Symbol(s) to Symbol List|Adding Symbol(s) to Symbol List]] section for more information.
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<div style="background-color: #E3FBE5;">'''Note: ''' Custom Futures and symbols (individual futures) should have the same data provider, exchange and Symbol Root. <br>'''Note:''' Not all data sources provide the historical data for the expired futures contracts. See [[Which Data Sources Support Expired and Continuous Futures Contracts]] page to find the list of the data sources supplying the historical data for the expired futures contacts. </div>
===Adding symbol roots to the dictionary===
See [[Symbol Dictionary for Futures]] section for more information
<div style="background-color: #E3FBE5;">'''Note: ''' The symbol root expiration rule directly affects the symbol expiration date.</div>
===Creating a Custom Futures symbol===
A new custom futures Custom Futures symbol can be created by using the Add Custom Futures window or by entering the Custom Futures symbol parameters into the Command Line toolbar.
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If the custom futures Custom Futures symbol name is known, the simplest way to create a new chart is to enter the symbol name and all known symbol parameters into the command line.
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Any omitted symbol parameters will automatically be selected, and the symbol plotted.
'''To create a Custom Futures symbol:'''
# In the main MultiCharts menu select '''File''', then point to '''New''' and click '''QuoteManager Window'''.
# Select Go to the '''Instrument'''tab.
# Then click '''Add custom futures'''.
# Select the data source.
# Input the any desired symbol name.
# Select the symbol root.
# Select contracts to use (if they are specified incorrectly in Symbol Dictionary Settings) by clicking on the check boxes.
# Build continuous futures contract on.<br>To define the serial number of the contract on which the Custom Futures series is based select one of the available options in the box: Nearest contract, 2nd nearest contract, N nearest contract.<br>While building a Custom Futures “N” Nearest contract will be taken for each moment of time. === Algorithm of choosing the rollover date<br><br>==='''Event (Volume and/or Open Interest)'''<br>When day (Event) rollover is selected, e.g. the next contract’s Daily bar volume (Days of Higher) was higher than the Volume of previous bar for the specified amount number of days (1-9).<br>To select the event condition click '''Event'''<br>To define the rollover condition, select one of the available options in the '''Days of Higher''' box: Volume, Open interest, Open Interest or Volume, Open Interest and Volume.<br><br>'''Time (certain date)'''<br>When Time rollover is selected – the transition from the previous contract to the next contract is done on the day defined by displacement into the past from the expiration date for the specified value 0 – 99 of trading days (Trading Days Prior to Expiration Date). An additional displacement can be set for the value up to 9 months into the past using the Offset, i.e. the rollover date is the date obtained by displacement into the past from the Expiration Date for Offset of months and prior trading days.<br>To select time condition click '''Time'''. In the '''Offset by Months prior''' box, enter an amount the number of months.<br><br>
# '''Back adjustment mode'''<br>To define the back adjustment mode, in the '''Back Adjustment Mode''' box select one of the available options: no adjustment, absolute difference, ratio.<br>
#* '''No Adjustment''' - the bars of each series in use are not changed.<br>
#* '''Absolute Difference''' - constant (С = C<sub>next</sub> - C<sub>prev</sub>; where C<sub>prev</sub> – close of the last bar before the rollover point) is added to all data prior to the rollover date. The data of the last series is not corrected as there was no rollover for it yet.<br>If the N contracts are rolled over then the data of the first contract is corrected N-1 times.
#* '''Ratio adjustment''' - all data prior to the rollover point is multiplied on by the ratio (C= C<sub>next</sub> / C<sub>prev</sub>).<br>If the N contracts are rolled over then the data of the first contract is corrected N-1 times.
# '''“Symbol Code” field''' <br> Displays rollover encoded in a line. The encoding is done automatically if the information on the Custom Futures tab is changed. The symbol code can be copied, but cannot be modified.<br>“Symbol Code” can be used in Real-time market scanner or Command Line to plot a Custom Futures chart bypassing the dialogue window.
# Set the Settings and Sessions tabs of Custom Futures up the same way as for individual contracts.<br>
[] - everything that is in the [] brackets can be omitted.<br>
<div style="background-color: #E3FBE5;">'''Note: ''' If the necessary symbol is missing from the database data series will be created without it.</div>
===Custom Futures that cannot be created in MultiCharts===
The root name should not contain following symbols <;> <:> <=> <!> <_> <”>. Custom Futures cannot be created for such symbols.<br>
If the symbol name does not satisfy the basic template, Custom Futures cannot be created for this symbol.
“To construct Custom Futures please add the following contracts”.
These alerts appear because Custom futures Futures requests data prior and following the symbols already in the database based on the selected rollover conditions and data request.
Custom Futures chart can be plotted without adding these symbols, if there are other individual contracts with data in QuoteManager.
If there are no futures symbols in the data base for creating a Custom Futures, the following alert message will appear:
[[Category:QuoteManager]]