Changes

One * To connect MultiCharts to IQFeed data, it is necessary to have IQFeed software installed and launched on the computer. When the connection is set up correctly, MultiCharts brings up IQFeed software automatically when data is requested. To download the latest version of IQFeed client, follow the link: http://www.iqfeed.net/index.cfm?displayaction=support&section=download * To set up IQFeed data feed connection::# In the '''QuoteManager''' main menu select '''Tools''' and then click '''Data Sources'''. Select '''IQFeed''' in the leading professional list of all supported data vendorsand click the '''Settings''' button. The company has been working in IQFeed Data Feed Configuration window is opened.:# In the financial information since 1984opened up window:::* Authority section. IQFeed provides <br>Enter '''Login''' and '''Password'''.::* Historical Data section.<br>Check the '''Build minute and daily bars based on tick-by-data''' box to request only tick unfiltered data, thus you will not miss about 50% from IQfeed server and build all other resolution charts out of the actual tradestick data.<br><div style="background-color: #E3FBE5;">'''Note''': IQFeed provide less tick data comparing to minute or daily data. </div>::* Real-Time section.<br>Check the '''Generate a new Ask/Bid tick if Trade changes''' box to make snapshots of Ask/Bid streams and show them in MultiCharts only at the moment when a new Trade comes.* To add an instrument manually or from data source, see [[Data_Sources_Overview#Adding_Symbol.28s.29_to_Symbol_List|Adding Symbol(s) to Symbol List]].

== Features and limitations ==  '''Features''' # Automatic gap filling# Automatic reconnection in case connection is lost  '''Limitations''' # Since IQFeed has no identification of transactions there is no such a possibility to receive data for several charts simultaneously. All the paralleled queries are queued. Thus, if you make a query of the history for a long period of time there immediately comes the query for receiving several bars only as the program cannot draw data for the second query before the first is not processed # There is no method for deleting a historical query since it is necessary to wait for a response for the previous query in order to begin to process the next one# When plotting a chart for the Bid/Ask field of Minute, Day and etc, actually ticks will be requested because it is impossible to receive the history of minutes and days for Bid/Ask. It will deteriorate data reception performance <br>== Setting up ==  # Make sure IQFeed 2.3 or higher is installed and functions properly. # Make sure you're using a valid login/password. No additional settings are required. To create a symbol using IQFeed as the Data Source see see [[Operating_Symbol_List#Adding Symbol from Data Vendor Supplied List|Adding from a list supplied by data vendor]] section section for more detailed information.  <br>[[Category:Built-in_Data_Sourcesin Data Sources]]