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Since '''MultiCharts 14''' it is has been possible to schedule an automated loading downloading of historical data.This feature allows loading downloading the historical data from the data provider automatically on a scheduled basis according to the set of rules specified by user.
==Opening Historical Data Download Scheduler==
Historical Data Download Scheduler is accessible from QuoteManager.
To create a new schedule for data loadingdownloading:
# In the '''QuoteManager''' main menu select '''Tools''' and then click '''Historical Data Download Scheduler''' or select the corresponding icon in the toolbar.
==Application settings tab==
# In the '''Add symbols to download historical data''' section click '''Add''' to add the symbols that you need to loaddownload. Multiple symbol selection is possible. To highlight multiple symbols, use one of the following methods:
#* Click on the symbol to begin with and while holding SHIFT key click on the last necessary symbol. All symbols in the range between these two will be selected; or:
#* Use CTRL in combination with the mouse to select/deselect symbols one by one. While holding CTRL, a single click will select the symbol and second click on the same symbol will deselect it; or:
# Selection of resolutions and quote fields is done individually for each symbol. Click on the symbol and check the required checkboxes for it in the '''Select resolutions for each symbol''' section. To select/deselect all available fields use '''Check all/Uncheck all''' buttons.
# The resolution and quote field selection can be done for all instruments simultaneously by using '''Select all''' button. '''Select none''' option will cancel the selection of symbols.
# '''Erase all existing Data removal options''' section allows to specify the types of data for the selected symbols to be removed from MultiCharts database during downloading the historical data. See more details below. ==Data Removal Options==From the drop-down list choose:*'''Refresh''' box deletes to request the historical data for the selected data range, resolution and quote field from the data feed. If the data is received from the provider, the new data replaces the data that was stored in the database before for the selected interval and type. If new data is not received from the provider, it remains the same.*'''Delete only the data of the selected type and time interval''' to delete the symbols’ historical data for the selected data range, resolution and quote field and request new historical data. Data backup is automatically created. If the data is received from the provider, the new data is saved in the database. If the data is not received from the provider, there will be a gap in the data of the selected type and time interval.*'''Delete the data of the selected type completely''' to delete all the historical data stored in the database for the selected symbolsand download historical data for the selected data range, resolutions resolution and quote fieldsfield. If data removal option '''Delete only the data of the selected type and time interval''' or '''Delete the data of the selected type completely''' is selected, a data backup is automatically created. The number of backup copies is limited, maximal allowed number is 99, default number is 3. Use '''Store … backup copies''' control to select how many backups to store for this task.When saving a new automatic backup, a number of backups created earlier for this task will be deleted. When the task is performed, the number of backups will match the selected value. ==Schedule settings tabSettings Tab==
# Click on the '''Name''' (in blue) to change the name of the schedule.
# Select the frequency of loading downloading from the available options: '''One time''', '''Daily''', '''Weekly''', '''Monthly'''.
# Specify the '''Start task''' date/time (PC time) in the corresponding field.
# Check '''Enabled''' to activate the schedule.
