Draw Run Chart VI

Owning Palette: Control Charts Drawing VIs

Requires: DSC Module

Draws a run chart of the individuals making up the samples X array in time order. The VI interprets the individual observations in the samples array to be in time order by row, and the individuals within each row by column. Optionally, the VI plots the specification limits and/or the natural process limits against the observations.

Details  

	starting individual number (0) is the individual number of the first individual the VI uses to label the chart x-axis. If you do not wire this input, sample labeling on the x-axis will start at zero.
	samples X contains the points to be plotted on the run chart. Each row is a sample with n observations where n is the number of columns in the 2D array. N is also known as the subgroup size. You can generate a run chart from a 1D array by wiring it to a build array primitive before wiring it to the samples X input.
	upper spec limit is the upper specification limit of the process.
	lower spec limit is the lower specification limit of the process.
	process mean is the estimated process mean. See the Process Mean & Sigma VI for more information about how the process mean and process sigma values are calculated.
	process sigma is the estimated process sigma.
	display mode (F,F,3) is the optional display mode specifier. If unwired, the VI will not draw the specification and natural process limits by default. This cluster contains the following. Note  If you wire the display mode cluster to change one of the default settings, you must specify all three elements. show spec limits specifies whether to draw the specification limits on the chart. The default is FALSE. show natural process limits specifies whether to draw the natural process limits on the chart. The default is FALSE. NP limit sigma is the sigma multiplier for the natural process limits. By default, this is 3.0. The natural process limits drawn on the chart will then be process mean ± NP limit sigma*process sigma.
	run chart is an XY graph with the individual observations in each sample plotted in order of occurrence. Optionally the VI plots the upper and lower specification limits and the mean specification value, and/or the natural process limits and process mean against the sample plots.

Draw Run Chart Details

You can turn on and off drawing of the specification limits or the natural process limits, and choose the sigma multiplier to use for the natural process limits (default three), by wiring in the display mode. If you do not wire the display mode, the VI does not draw the specification limits and natural process limits by default.