Table Of Contents

Customizing Analysis Functions Using Interactive Graphs

Last Modified: January 11, 2018

Use visualized data to configure filters, frequency domain transfers, and statistical analysis functions and create a customized node that you can use in your code.

  1. Locate or place one of the following analysis nodes on the diagram of a VI.
    Analysis Function Description
    Amplitude Measurements Performs peak amplitude measurement.
    Curve Fit Finds the line that best represents an input signal or input data set using a specific fitting method.
    FFT Spectrum Computes the averaged FFT spectrum of a signal.
    Filter Applies a lowpass, highpass, bandpass, or bandstop filter to a signal.
    Histogram Finds the discrete histogram of a signal.
    Limit Testing Performs limit testing by comparing the signal to upper and lower limits that you define.
    Pulse and Transition Measurements Returns various measurements of a specific pulse in a periodic waveform or an array of periodic waveforms, such as the period, pulse duration, and duty cycle.
    Resample Resamples a signal according to a specific delay and sampling interval.
    Scaling and Mapping Scales a signal based on a straight line.
    Signal Correlation Computes the auto correlation of a signal or cross correlation of two signals.
    Statistics Performs statistical calculations on a signal.
    Tone Measurements Finds tones with specific amplitude and frequency parameters.
  2. Select the node and click Analysis panel on the Item tab.
  3. Adjust the variables of the analysis node until it meets the requirements of your application.
    1. Above the graph, choose between a sample input and any valid data item that you previously captured and saved in the project.
    2. To the right of the graph, adjust the inputs of the node.
    The graph updates in real time to show sample data and the data resulting from the analysis function. Click Capture & view data in the top right corner to view only the data that the function produces with the current configuration.
  4. Open the Configured Code pane at the bottom of the analysis panel to view the customized node that corresponds to the function. To update the configuration of the node on the diagram, click Update node. If you want to create a new node with the current configuration, click Copy to Clipboard and then paste the new node onto the diagram.

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