SI Read from File VI

Owning Palette: Utilities VIs

Requires: Advanced Signal Processing Toolkit or Control Design and Simulation Module

Reads arrays or waveforms from a specified data file. Use this VI to read spreadsheet text files and waveforms data files.

Example

	file path (dialog if empty) specifies the path to the file from which this VI reads data.
	file type specifies the type of the source data file. You can specify a Spreadsheet Text File or a Waveforms Data File.
	sampling rate (Hz) specifies the sampling frequency in hertz. The value of sampling rate must be greater than 0. sampling rate is ignored if the file type is a waveforms data file.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	first channel returns the data from the first waveform in the record if the file type is Waveforms Data File. If the file type is Spreadsheet Text File, this VI converts the data array to a waveform based on the sampling rate you provide.
	all channels returns the data from all waveforms in the record if the file type is Waveforms Data File. If only one waveform exists in the record, this output is identical to the first channel output. If the file type is Spreadsheet Text File, this VI converts the data array to an array of waveforms based on the sampling rate you provide.
	error out contains error information. This output provides standard error out functionality.

Example

Refer to the Read Data from File VI in the labview\examples\System Identification\Getting Started\General.llb for an example of using the SI Read from File VI.