Company Events Academic NI Developer Zone Support Solutions Products & Services Contact NI MyNI

Plot Normal PDF Graph VI

Owning Palette: Process Statistics Graphing VIs

Installed With: Statistical Process Control Toolkit

Given the process mean and sigma, creates a graph of a normal probability distribution function (PDF) for the process. Also returns an array of XY values for the normal distribution. This graph is useful for viewing the estimated distribution of a sample or group of samples or for plotting a normal PDF against a histogram.

# points to plot (50) is the number of points to create for the PDF plot. Normally, you can leave this unwired. By default, 50 points are plotted.
process mean is the estimated process mean. See the Process Mean & Sigma VI for calculating this value.
process sigma is the estimated process sigma. See the Process Mean and Sigma VI or the Sample Statistics VI to calculate this value.
PDF height is the height to draw the PDF. If 0, the VI will draw the PDF with a height proportional to 1/sigma, corresponding to an area of 1 under the PDF curve. When fitting a normal PDF to a histogram, use the PDF height output from the Fit Nrml PDF to Histogram VI.
PDF width (+/- sigma) is the width to draw the PDF in terms of ± sigma. By default, the width is 3, and the VI draws the PDF from –3 sigma to +3 sigma.
normal PDF graph is an XY graph of a normal PDF with the specified height, width, and number of points.

Resources


 

Your Feedback! poor Poor  |  Excellent excellent   Yes No
 Document Quality? 
 Answered Your Question? 
Add Comments 1 2 3 4 5 submit