mdfChannelGroupInfo
Syntax
Description
returns a table of information about all channel groups in the specified MDF file.infoTable
= mdfChannelGroupInfo(mdfFileName
)
returns information about only the groups specified by infoTable
= mdfChannelGroupInfo(mdfFileName
,GroupNumber=grpNum)grpNum
. The
channel group number, grpNum
, is specified as a numeric scalar for one
group, or numeric vector for multiple groups.
Examples
Get Channel Group Information from MDF File
Get information on all groups.
gi = mdfChannelGroupInfo("VehicleData.mf4")
gi = 2×13 table GroupNumber AcquisitionName Comment NumSamples DataSize Sorted SourceName SourcePath SourceComment SourceType SourceBusType SourceBusChannelNumber SourceSimulated ___________ _______________ ___________________________________________________________________________ __________ ________ ______ ___________ ___________ _____________ ___________ _____________ ______________________ _______________ 1 <undefined> Simulation of an automatic transmission controller during passing maneuver. 751 43558 true <undefined> <undefined> <undefined> Unspecified Unspecified 0 false 2 <undefined> Simulation of engine gas dynamics. 92033 2208792 true <undefined> <undefined> <undefined> Unspecified Unspecified 0 false
Get information of a specific group.
gi = mdfChannelGroupInfo("VehicleData.mf4",GroupNumber=2)
gi = 1×13 table GroupNumber AcquisitionName Comment NumSamples DataSize Sorted SourceName SourcePath SourceComment SourceType SourceBusType SourceBusChannelNumber SourceSimulated ___________ _______________ __________________________________ __________ ________ ______ ___________ ___________ _____________ ___________ _____________ ______________________ _______________ 2 <undefined> Simulation of engine gas dynamics. 92033 2208792 true <undefined> <undefined> <undefined> Unspecified Unspecified 0 false
Input Arguments
mdfFileName
— MDF file name
string | char vector
MDF file name, specified as a string or character vector, including the necessary full or relative path. You can use a URL to specify a file on a remote server.
Depending on the location you are accessing,
mdfFileName
can take one of these forms.
Location | Form | ||||||||
---|---|---|---|---|---|---|---|---|---|
Current folder or MATLAB® path | To access a file in the current folder or MATLAB path, specify the
name of the file in Example:
| ||||||||
Other folders | To access a file in a folder other than the current folder, specify
the full or relative path name in
Example:
Example:
| ||||||||
Remote locations | To access a file in a remote location,
Based on the remote location,
For more information, see Work with Remote Data. Example:
|
Data Types: string
| char
Output Arguments
infoTable
— Channel group information
table
Channel group information returned in a table of groups.
Version History
Introduced in R2023aR2023a: Support for Remote File URLs
You can directly access MDF file data stored at remote locations, including Amazon S3, Azure® Blob Storage, and HDFS.
MATLAB Command
You clicked a link that corresponds to this MATLAB command:
Run the command by entering it in the MATLAB Command Window. Web browsers do not support MATLAB commands.
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)