Changes

One of To connect MultiCharts to IQFeed data, it is necessary to have IQFeed software installed and launched on the computer. When the leading professional connection is set up correctly, MultiCharts brings up IQFeed software automatically when data vendorsis requested. The company has been working in To download the financial information since 1984. latest version of IQFeed provides tick-by-tick unfiltered dataclient, thus you will not miss about 50% of follow the actual tradeslink: http://www.iqfeed.net/index.<br>cfm?displayaction=support&section=download

 {|style="border-collapse: collapse; border-widthTo set up IQFeed data feed connection: 1px; border-style: solid; border-color: #cccccc"|-|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|In the '''QuoteManager''' main menu select '''Tools''' and then click '''Data Sources'''. Select '''IQFeed''' in the list of all supported data vendors and click the '''ProSettings'''button. The IQFeed Data Feed Configuration window is opened.|style="border-collapse: collapse; border-width# In the opened up window: 1px; border-style: solid; border-color: #cccccc"|* Check '''ConFilter extended trades supplied by the exchange'''|to filter extended trades, that the exchange sends even during short breaks within the session and it might lead to incorrect bars on the chart (spikes). The filter is applied to historical and real-time data.|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|Affordable price* '''Authorization section'''<br>Enter Login and Password.|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|Not enough history * '''Historical Data section'''<br>Check the '''Build minute and daily bars based on tick data''' box to request only tick data from IQfeed server and build all other resolution charts out of tick data|-|.<br><div style="border-collapse: collapse; border-width: 1px; border-style: solid; borderbackground-color: #ccccccE3FBE5;"|Unfiltered >'''Note''': IQFeed provides less tick data comparing to minute or daily data, do not enable that option if minute and daily data is needed, as it will result in less bars on chart. </div>|style="border-collapse: collapse; border-width: 1px; border-style: solid; border* '''Real-color: #cccccc"|Insufficient coverage|}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# Automatic gap filling# Automatic reconnection in case connection is lostAdding_Symbol.28s.29_to_Symbol_List|Adding Symbol(s) to Symbol List]].

 '''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]]