IQFeed: Difference between revisions
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One of the leading professional data vendors. The company has been working in the financial information since 1984. IQFeed provides tick-by-tick unfiltered data, thus you will not miss about 50% of the actual trades.<br> | |||
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|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|'''Pro''' | |||
|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|'''Con''' | |||
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|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|Affordable price | |||
|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|Not enough history data | |||
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|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|Unfiltered data | |||
|style="border-collapse: collapse; border-width: 1px; border-style: solid; border-color: #cccccc"|Insufficient coverage | |||
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== 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 | |||
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== 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. | |||
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[[Category:Built-in_Data_Sources]] | [[Category:Built-in_Data_Sources]] |
Revision as of 16:13, 23 January 2012
One of the leading professional data vendors. The company has been working in the financial information since 1984. IQFeed provides tick-by-tick unfiltered data, thus you will not miss about 50% of the actual trades.
Pro | Con |
Affordable price | Not enough history data |
Unfiltered data | Insufficient coverage |
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
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 Adding from a list supplied by data vendor section section for more detailed information.