Sample Compression Express VI

Dialog Box Options

Parameter	Description
Reduction Specifications	Contains the following option: Reduction factor—Number of points in the Signals input to reduce to one point in the resulting signal. The default is 10.
Reduction Methods	Contains the following options: Minimum—Reduces the Signals input by using the lowest value in each segment. Minimum Plot Color—Color of the Minimum plot. This option is available only when you place a checkmark in the Minimum checkbox. Maximum—Reduces the Signals input by using the highest value in each segment. Maximum Plot Color—Color of the Maximum plot. This option is available only when you place a checkmark in the Maximum checkbox. Last—Reduces the Signals input by using the last point in each segment. Last Plot Color—Color of the Last plot. This option is available only when you place a checkmark in the Last checkbox. Mean—Reduces the Signals input by using the mean value of the points in each segment. Mean Plot Color—Color of the Mean plot. This option is available only when you place a checkmark in the Mean checkbox. Median—Reduces the Signals input by using the median value of the points in each segment. Median Plot Color—Color of the Median plot. This option is available only when you place a checkmark in the Median checkbox.
Input Signal	Displays the input signal. If you wire data to the Express VI and run it, Input Signal displays real data. If you close and reopen the Express VI, Input Signal displays sample data until you run the Express VI again.
Result Preview	Displays a preview of the measurement. The Result Preview plot indicates the value of the selected measurement with a dotted line. If you wire data to the Express VI and run the VI, Result Preview displays real data. If you close and reopen the Express VI, Result Preview displays sample data until you run the VI again. If the cutoff frequency values are invalid, Result Preview does not display valid data.

Block Diagram Inputs

Parameter	Description
Signals	Contains the input signal or signals.
Enable	Enables or disables the Express VI. The default is ON or TRUE.
Reset	Controls the initialization of the internal state of the VI. The default is FALSE.
error in	Describes error conditions that occur before this node runs.

Block Diagram Outputs

Parameter	Description
Maximum	Returns the highest value in each bin as the resulting signal output.
Mean	Returns the mean value of the points in each bin as the resulting signal output.
Median	Returns the median value of the points in each bin as the resulting signal output.
Data Valid	Indicates whether the data is valid.
Last	Returns the last point in each bin as the resulting signal output.
Minimum	Returns the lowest value in each bin as the resulting signal output.
error out	Contains error information. This output provides standard error out functionality.

This Express VI operates similarly to the following VIs and functions:

Decimate 1D Array

Example

Refer to the Express VI - Sample Compression VI in the labview\examples\Express VIs directory for an example of using the Sample Compression Express VI.

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