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channelList

信息啊n available MDF groups and channels

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Syntax

chans = channelList(mdfobj)
channelList(mdfObj,chanName)
channelList(mdfObj,chanName,'ExactMatch',true)

Description

example

chans= channelList(mdfobj)returns a table of information about channels and groups in the specified MDF-file.

example

channelList(mdfObj,chanName)searches the MDF-file to generate a list of channels matching the specified channel name. The search by default is case-insensitive and identifies partial matches. A table is returned containing information about the matched channels and the containing channel groups. If no matches are found, an empty table is returned.

channelList(mdfObj,chanName,'ExactMatch',true)searches the channels for an exact match, including case sensitivity. This is useful if a channel name is a substring of other channel names.

Examples

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View all available MDF channels.

mdfObj = mdf('File01.mf4'); chans = channelList(mdfObj)
chans = 4×9 table ChannelName ChannelGroupNumber ChannelGroupNumSamples ____________________________________ __________________ ______________________ "Float_32_LE_Offset_64" 2 10000 "Float_64_LE_Primary_Offset_0" 2 10000 "Signed_Int16_LE_Offset_32" 1 10000 "Unsigned_UInt32_LE_Primary_Offset_0" 1 10000

Filter on channel names.

chans = channelList(mdfObj,'Float')
chans = 2×9 table ChannelName ChannelGroupNumber ChannelGroupNumSamples _____________________________ __________________ ______________________ "Float_32_LE_Offset_64" 2 10000 "Float_64_LE_Primary_Offset_0" 2 10000
chans = channelList(mdfObj,'Float','ExactMatch',真正的)
chans = 0×9 empty table

Input Arguments

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MDF-file, specified as an MDF-file object.

Example:mdf('File01.mf4')

Name of channel, specified as a character vector or string. By default, case-insensitive and partial matches are returned.

Example:'Channel1'

Data Types:char|string

Output Arguments

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信息啊n available MDF channels, returned as a table. To access specific elements, you can index into the table.

Version History

Introduced in R2018b

See Also

Functions