Rtd Functions Excel For Mac
2021年2月7日Download here: http://gg.gg/o81z0
*Rtd Functions Excel For Mac Os
*Rtd Functions Excel For Macs -->
Microsoft Excel has the ’magic’ RTD function that allows refreshing values from real-time data servers in Excel spreadsheets. The RTD function can be used in regular Microsoft Excel formulas. So you can use cell values as formula arguments and build powerful refreshable data. Excel Cube Functions. The Excel Cube functions perform calculations and extract data from a cube, which is stored on an external SQL server. These functions are only supported with a connection to Microsoft SQL Server 2005 Analysis Services or later data source.
Note
Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.Summary
Note
The performance of the RealTimeData (RTD) function has been greatly enhanced in Excel M365 version 2002 or later. For more information, see Excel Performance and Limits Improvements.
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. For 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. The server waits until Excel is idle before updating. 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. For example, if you use the RTD function in a workbook, you do not receive the Links startup message when you open the workbook, nor can you manage the status of an RTD function through the Edit Links dialog box.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. RealTimeServerProgID is a required argument.
*
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.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. Assume that the server is provided as a Dynamic Link Library (DLL) named RaceReport.dll, that it is installed on the user’s computer, and that it is registered as a COM add-in by its own setup process. The general form of the RTD function as used with this server might be as follows
=RTD(’MyRTDServerProdID’,’MyServer’,’RaceNum’,’RunnerID’,’StatType’)
where the topics RaceNum, RunnerID, and StatType determine the race of interest, the runner whose data is required, and the type of data for a particular use of the function, respectively.
Here the user might select a cell and type the following formula in it
=RTD(’ExcelRTD.RaceReport’,’,’2’,’16’,’Time’)
to see the current elapsed time for runner number 16 in race number 2. The number of topics and the nature of the associated data is determined by the developer of the COM server. For example, the race-reporting server might deliver different data if you use the following RTD function:
=RTD(’ExcelRTD.RaceReport’,’,’3’,’25’,’Position’)
In this case, the data returned indicates the current position of runner number 25 in race number 3.
In this manner, the same function can be used differently throughout the workbook to retrieve different data from the same server, all of which is updated automatically.Wrappers to Simplify Use
The RTD function can be used inside user-defined functions (UDFs) in Microsoft Visual Basic for Applications. These then become wrappers for the RTD function. This approach can be useful in shielding users from the details of the RTD server name and ProgID, and in enabling them to focus only on the data that is important to them.
For example, in the previous scenario, the user might be provided with two functions: GetTime(RunnerID) and GetPosition(RunnerID). These functions assume that the user is always dealing with the same server and race number. Therefore the user only has to specify a runner’s ID to receive current data on the runner’s elapsed time and position, respectively.Calculation
Because RTD updates data when Excel is idle, it continues to receive information if Excel is in manual calculation mode. In that event, the new data is cached and the current values are used when a manual calculation is performed.Security
RTD servers should be digitally signed. If an RTD server is not digitally signed, the server may not load, and a #N/A will be displayed in the cell(s) referencing the RTD server.
For Microsoft Office Excel 2007, you can review security settings by using the Trust Center. This can be accessed by from the Trust Center tab in the Excel Options dialog box.
For Microsoft Office Excel 2003 and in Microsoft Excel 2002, the load behavior can be altered by adjusting the macro security settings in Excel.References
For more information about RTD and Excel security, click the following article number to view the article in the Microsoft Knowledge Base:
286259 Security settings and Excel RealTimeData servers
For more information about creating an RTD server, click the following article number to view the article in the Microsoft Knowledge Base:
285339 How to create a RealTimeData server for Excel
Creating an RTD server/function in Excel-DNA is very simple.
An RTD function in Excel is basically a function that continually updates Excel, for example a cell might show the current price of a stock without the Excel user having to refresh/recalc.
I’m going to take the code a sample written by Govert van Drimmelen’s on the Excel-DNA google group and work through it to show what does what. His code demonstrates code for a time service/server. i.e. it will supply the current time to Excel and update it every 500ms.
*Create a class library named RtdFunctions (or whatever you like)
*Using NuGet add the Excel-DNA package to the project
*Add the packagesExcel-DNA.0.30.3toolsExcelDna.xll file to your project and rename to match the project but suffixed -AddIn.xll, i.e. mine is RtdFunctions-AddIn.xll set it’s “Copy to Output Directory” property to “Copy if newer”. You could ofcourse handle the copy within the post build step if you prefer.
*Rename the Class1.cs file to TimerServer.cs
We’ve now created a bare bones of this project, it’s time to now implement the TimeServer. Whilst we could implement the IRtdServer interface ourselves. The Excel-Dna assembly includes a thread-safe implementation already named ExcelRtdServer, so let’s use that so we can concentrate on the actual RTD functionality.
So…
*Derive the new TimeServer class from ExcelRtdServer, you’ll need to add the using clause for ExcelDna.Integration.Rtd
*If we want the potential to support multiple topics we’ll need a list of topics, ExcelRtdServer wraps topic id’s in a Topic object so add
to our TimerServer
*We are going to need to override three methods from the ExcelRtdServer, ServerTerminate, ConnectData and DisconnectData, so go ahead and override those and then we’ll implement the functionality in each
*As the purpose of this TimerServer is to supply the time using a push style notification, we’re going to add a Timer to the class, I’m using the System.Threading.Timer so add the following
As you can see the Callback method, which is triggered on a timer event, will loop through the topics calling UpdateValue with results from GetTime, in other words it will tell each topic to update to the latest time.
*Amend the ServerTerminate method to dispose of the timer, this will be called when Excel terminates any use of the TimrServer, so we can safely clean up here, so ServerTerminate should look like this
*Next we want to handle the ConnectData implementation. Each time the server is connected to we will cache the topic in our topics like and ensure the timer is started before returning the current time
The ConnectData method is called when a spreadsheet is opened with the RTD functions or, ofcourse, when you add a function call to the server method
*Finally we want to implement the DisconnectData method to remove the cached topic and possible stop the service, so add the followingRtd Functions Excel For Mac Os
So the full code is listed here
This is all well and good but to use this we need to use the =RTD syntax in Excel and to do this we’ll need to add a Guid to the class and mark the project, via the project properties (build tab), as Register for COM interop and then register the component.
It’s far simpler and less messy to now create a new class, let’s call it TimeFunctions as followsRtd Functions Excel For Macs
This is now exposed to Excel and will use XlCall.RTD to call into our RTD server so bypassing any issues with COM etc.
Download here: http://gg.gg/o81z0
https://diarynote-jp.indered.space
*Rtd Functions Excel For Mac Os
*Rtd Functions Excel For Macs -->
Microsoft Excel has the ’magic’ RTD function that allows refreshing values from real-time data servers in Excel spreadsheets. The RTD function can be used in regular Microsoft Excel formulas. So you can use cell values as formula arguments and build powerful refreshable data. Excel Cube Functions. The Excel Cube functions perform calculations and extract data from a cube, which is stored on an external SQL server. These functions are only supported with a connection to Microsoft SQL Server 2005 Analysis Services or later data source.
Note
Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.Summary
Note
The performance of the RealTimeData (RTD) function has been greatly enhanced in Excel M365 version 2002 or later. For more information, see Excel Performance and Limits Improvements.
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. For 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. The server waits until Excel is idle before updating. 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. For example, if you use the RTD function in a workbook, you do not receive the Links startup message when you open the workbook, nor can you manage the status of an RTD function through the Edit Links dialog box.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. RealTimeServerProgID is a required argument.
*
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.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. Assume that the server is provided as a Dynamic Link Library (DLL) named RaceReport.dll, that it is installed on the user’s computer, and that it is registered as a COM add-in by its own setup process. The general form of the RTD function as used with this server might be as follows
=RTD(’MyRTDServerProdID’,’MyServer’,’RaceNum’,’RunnerID’,’StatType’)
where the topics RaceNum, RunnerID, and StatType determine the race of interest, the runner whose data is required, and the type of data for a particular use of the function, respectively.
Here the user might select a cell and type the following formula in it
=RTD(’ExcelRTD.RaceReport’,’,’2’,’16’,’Time’)
to see the current elapsed time for runner number 16 in race number 2. The number of topics and the nature of the associated data is determined by the developer of the COM server. For example, the race-reporting server might deliver different data if you use the following RTD function:
=RTD(’ExcelRTD.RaceReport’,’,’3’,’25’,’Position’)
In this case, the data returned indicates the current position of runner number 25 in race number 3.
In this manner, the same function can be used differently throughout the workbook to retrieve different data from the same server, all of which is updated automatically.Wrappers to Simplify Use
The RTD function can be used inside user-defined functions (UDFs) in Microsoft Visual Basic for Applications. These then become wrappers for the RTD function. This approach can be useful in shielding users from the details of the RTD server name and ProgID, and in enabling them to focus only on the data that is important to them.
For example, in the previous scenario, the user might be provided with two functions: GetTime(RunnerID) and GetPosition(RunnerID). These functions assume that the user is always dealing with the same server and race number. Therefore the user only has to specify a runner’s ID to receive current data on the runner’s elapsed time and position, respectively.Calculation
Because RTD updates data when Excel is idle, it continues to receive information if Excel is in manual calculation mode. In that event, the new data is cached and the current values are used when a manual calculation is performed.Security
RTD servers should be digitally signed. If an RTD server is not digitally signed, the server may not load, and a #N/A will be displayed in the cell(s) referencing the RTD server.
For Microsoft Office Excel 2007, you can review security settings by using the Trust Center. This can be accessed by from the Trust Center tab in the Excel Options dialog box.
For Microsoft Office Excel 2003 and in Microsoft Excel 2002, the load behavior can be altered by adjusting the macro security settings in Excel.References
For more information about RTD and Excel security, click the following article number to view the article in the Microsoft Knowledge Base:
286259 Security settings and Excel RealTimeData servers
For more information about creating an RTD server, click the following article number to view the article in the Microsoft Knowledge Base:
285339 How to create a RealTimeData server for Excel
Creating an RTD server/function in Excel-DNA is very simple.
An RTD function in Excel is basically a function that continually updates Excel, for example a cell might show the current price of a stock without the Excel user having to refresh/recalc.
I’m going to take the code a sample written by Govert van Drimmelen’s on the Excel-DNA google group and work through it to show what does what. His code demonstrates code for a time service/server. i.e. it will supply the current time to Excel and update it every 500ms.
*Create a class library named RtdFunctions (or whatever you like)
*Using NuGet add the Excel-DNA package to the project
*Add the packagesExcel-DNA.0.30.3toolsExcelDna.xll file to your project and rename to match the project but suffixed -AddIn.xll, i.e. mine is RtdFunctions-AddIn.xll set it’s “Copy to Output Directory” property to “Copy if newer”. You could ofcourse handle the copy within the post build step if you prefer.
*Rename the Class1.cs file to TimerServer.cs
We’ve now created a bare bones of this project, it’s time to now implement the TimeServer. Whilst we could implement the IRtdServer interface ourselves. The Excel-Dna assembly includes a thread-safe implementation already named ExcelRtdServer, so let’s use that so we can concentrate on the actual RTD functionality.
So…
*Derive the new TimeServer class from ExcelRtdServer, you’ll need to add the using clause for ExcelDna.Integration.Rtd
*If we want the potential to support multiple topics we’ll need a list of topics, ExcelRtdServer wraps topic id’s in a Topic object so add
to our TimerServer
*We are going to need to override three methods from the ExcelRtdServer, ServerTerminate, ConnectData and DisconnectData, so go ahead and override those and then we’ll implement the functionality in each
*As the purpose of this TimerServer is to supply the time using a push style notification, we’re going to add a Timer to the class, I’m using the System.Threading.Timer so add the following
As you can see the Callback method, which is triggered on a timer event, will loop through the topics calling UpdateValue with results from GetTime, in other words it will tell each topic to update to the latest time.
*Amend the ServerTerminate method to dispose of the timer, this will be called when Excel terminates any use of the TimrServer, so we can safely clean up here, so ServerTerminate should look like this
*Next we want to handle the ConnectData implementation. Each time the server is connected to we will cache the topic in our topics like and ensure the timer is started before returning the current time
The ConnectData method is called when a spreadsheet is opened with the RTD functions or, ofcourse, when you add a function call to the server method
*Finally we want to implement the DisconnectData method to remove the cached topic and possible stop the service, so add the followingRtd Functions Excel For Mac Os
So the full code is listed here
This is all well and good but to use this we need to use the =RTD syntax in Excel and to do this we’ll need to add a Guid to the class and mark the project, via the project properties (build tab), as Register for COM interop and then register the component.
It’s far simpler and less messy to now create a new class, let’s call it TimeFunctions as followsRtd Functions Excel For Macs
This is now exposed to Excel and will use XlCall.RTD to call into our RTD server so bypassing any issues with COM etc.
Download here: http://gg.gg/o81z0
https://diarynote-jp.indered.space
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