CLASS ndi.daq.daqsystemstring¶

NDI_DAQSYSTEMSTRING - a class for describing the device and channels that correspond to an NDI_EPOCHPROBEMAP_DAQSYSTEM

ndi.daq.daqsystemstring

A 'devicestring' is a part of an ndi.daq.metadata.epochprobemap_daqsystem that indicates the channel types and channel numbers that correspond to a particular record.

For example, one may specify that a 4-channel extracellular recording with name 'ctx' and reference 1 was recorded on a device called 'mydevice' via analog input on channels 27-28 and 45 and 88 with the following ndi.daq.metadata.epochprobemap_daqsystem entry: name: 'ctx' reference: 1 type: 'extracellular_electrode-4' devicestring: 'mydevice:ai27-28,45,88

The form of a device string is DEVICENAME:CT####, where DEVICENAME is the name of ndi.daq.system object, CT is the channel type identifier, and #### is a list of channels. The #### list of channels should be numbered from 1, and can use the symbols '-' to indicate a sequential run of channels, and ',' to separate channels. Use a semicolon to separate channel types (e.g., 'ai27-28;di1')

For example: '1-5,10,17' corresponds to [1 2 3 4 5 10 17] '2,5,11-12,8 corresponds to [2 5 11 12 8] '' corresponds to [] % if the device doesn't have channels

See also: ndi.daq.daqsystemstring/NDI_DEVICESTRING, NDI_DEVICESTRING/DEVICESTRING

Documentation for ndi.daq.daqsystemstring
   doc ndi.daq.daqsystemstring

Superclasses¶

none

Properties¶

Property	Description
devicename	The name of the device
channeltype	The type of channels that are used by the device
channellist	An array of the channels that are referred to by the devicestring

Methods¶

Method	Description
daqsystemstring	Create an NDI_DEVICESTRING object from a string or from a device name, channel type, and channel list
devicestring	Produce an ndi.daq.daqsystemstring character string
ndi_daqsystemstring2channel	Convert an ndi.daq.daqsystemstring to device, channel type, channel list

Methods help¶

daqsystemstring - Create an NDI_DEVICESTRING object from a string or from a device name, channel type, and channel list

DEVSTR = ndi.daq.daqsystemstring(DEVICENAME, CHANNELTYPE, CHANNELLIST) or DEVSTR = ndi.daq.daqsystemstring(DEVSTRING)

Creates a device string suitable for a ndi.daq.metadata.epochprobemap_daqsystem from a DEVICENAME, a cell array of strings CHANNELTYPE (such as 'ai', 'di', 'ao'), and a CHANNELLIST.

Inputs: In the first form: DEVICENAME should be the name of an ndi.daq.system CHANNEL_PREFIX should be the prefix for a particular type of channel. These channel type will vary from device to device. For example, a NDI_DAQSYSTEM_MULTICHANNELDAQ might use: 'ai' - analog input 'ao' - analog output (it is an 'o' like 'oh', not 0) 'di' - digital input 'do' - digital output CHANNELLIST should be an array of channel numbers, which must start from 1 (that is, the first channel is 1). In the second form: DEVSTRING should be in the form: 'devicename:ct#,#-#,#,#' where devicename is the name of the device, ct is a string that corresponds to the channel type, and the numbers and separators specify the channel numbers to be accessed.

Examples:

   myndi_daqsystemstring1 = ndi_devicestring('mydevice','ai',[1:5 7 23])
   myndi_daqsystemstring2 = ndi_devicestring('mydevice:ai1-5,7,23');