Using RTD As an example of the RTD function, consider retrieving information from a server that delivers continuous data for runners in several simultaneous races.
![]() Thinkorswim Mac Is TheMicrosoft Excel for Mac is the worlds most famous and widely used spreadsheet editing application.Thinkorswim Software Received NumerousOriginally developed by the Microsoft in 1987, this software received numerous expansions of capabilities, making it the go-to source for spreadsheet editing, use of graphing tools, pivot tables, macro programming, and much more.This article describes the functionality that the RealTimeData (RTD) function provides. Microsoft Office Excel provides a worksheet function, RealTimeData (RTD). This function enables you to call a Component Object Model (COM) Automation server to retrieve data in real time. When you have to create a workbook that includes data that is updated in real time, for example, financial data or scientific data, you can now use the RTD worksheet function. In earlier versions of Excel, Dynamic Data Exchange (DDE) is used for that purpose. The RTD function is based on COM technology and provides advantages in robustness, reliability, and convenience. RTD depends on the availability of an RTD server to make the real-time data available to Excel. Thinkorswim How To Create AnFor more information about how to create an RTD server, see the References section. The RTD function retrieves data from an RTD server for use in the workbook. The function result is updated whenever new data becomes available from the server and the workbook can accept it. This relieves the developer of having to determine whether Excel is available to accept updates. The RTD function differs from other functions in this regard because other functions are updated only when the worksheet is recalculated. Although the RTD function provides a link to data on a server, it is not the same type of link as references to cells in other worksheets or workbooks. ![]() Syntax The RTD function uses the following syntax RTD(RealTimeServerProgID,ServerName,Topic1,Topic2,.) where the function arguments are as follows: RealTimeServerProgID A string that represents the Program ID of the RTD server installed on the local system. This is typically a COM add-in that is registered by a setup procedure or by using RegSvr32. ServerName A string that represents the name of the server on which the RTD server is to be run. If the RTD server is run locally, the ServerName should be an empty string () or omitted. Topic1, Topic2,. Strings that determine the data being retrieved. You can use from one to 28 topics, although only one topic is required.
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