C Chart

This node outputs SPC C Chart and performs control tests.

Type

SPC-Chart

Class

fire.nodes.graph.NodeSpcCChart

Fields

Name	Title	Description
title	Title
titleColor	Title Color
description	Description
descriptionColor	Description Color
attribute	Attribute Columns	Attribute column names
subgroup	Subgroup Column	Subgroup column name
identifier	Identifier Columns	Identifier column name
test1	point beyond the control limits
test2	k or more consecutive points are one side of the centerline
test3	k or more consecutive points are increasing or decreasing
test4	k consecutive points alternate up or down

Details

The C chart in Statistical Process Control (SPC) is used to monitor the count of defects in a process when the sample size remains constant. It tracks the total number of defects or non-conformities in each sample, making it suitable for processes where multiple defects can occur in a single unit, such as manufacturing or inspection processes. The C chart helps identify trends, shifts, or out-of-control points by assessing the variation in defect counts. By ensuring that defect counts stay within control limits, the C chart helps maintain process stability and supports consistent quality management.