JMSLTM Numerical Library 6.1

com.imsl.chart.qc
Class UChart

java.lang.Object
  extended by com.imsl.chart.AbstractChartNode
      extended by com.imsl.chart.ChartNode
          extended by com.imsl.chart.Data
              extended by com.imsl.chart.qc.ShewhartControlChart
                  extended by com.imsl.chart.qc.UChart
All Implemented Interfaces:
Serializable, Cloneable

public class UChart
extends ShewhartControlChart

UChart is a u-chart for monitoring the defect rate when defects are rare.

The defect rate is the number of defects found divided by the number of samples inspected. The number of defects are assumed to be rare. Control limits are computed using the Poisson distribution. If defects are not rare, use PChart instead. The sample sizes are not required to be equal. The control limits are at

bar{p}+ksqrt{bar{p}/n}

where bar{p} is the mean defect rate, n is the sample size, and k is the value of the "ControlLimit" attribute for the line. By default, the chart contains an upper control limit line with k=3, a lower control limit line with k=-3, and a central line equal to bar{p}. Additional control limits can be added. The method addWeco adds control limits with k = -2, -1, 1, 2.

See Also:
Example, Serialized Form

Field Summary
 
Fields inherited from class com.imsl.chart.qc.ShewhartControlChart
d2, d3
 
Fields inherited from class com.imsl.chart.ChartNode
AXIS_X_TOP, AXIS_Y_RIGHT, BAR_TYPE_HORIZONTAL, BAR_TYPE_VERTICAL, DASH_PATTERN_DASH, DASH_PATTERN_DASH_DOT, DASH_PATTERN_DOT, DASH_PATTERN_SOLID, DATA_TYPE_FILL, DATA_TYPE_LINE, DATA_TYPE_MARKER, DATA_TYPE_PICTURE, DATA_TYPE_TUBE, DENDROGRAM_TYPE_HORIZONTAL, DENDROGRAM_TYPE_VERTICAL, FILL_TYPE_GRADIENT, FILL_TYPE_NONE, FILL_TYPE_PAINT, FILL_TYPE_SOLID, LABEL_TYPE_PERCENT, MARKER_TYPE_ASTERISK, MARKER_TYPE_CIRCLE_CIRCLE, MARKER_TYPE_CIRCLE_PLUS, MARKER_TYPE_CIRCLE_X, MARKER_TYPE_DIAMOND_PLUS, MARKER_TYPE_FILLED_CIRCLE, MARKER_TYPE_FILLED_DIAMOND, MARKER_TYPE_FILLED_SQUARE, MARKER_TYPE_FILLED_TRIANGLE, MARKER_TYPE_HOLLOW_CIRCLE, MARKER_TYPE_HOLLOW_DIAMOND, MARKER_TYPE_HOLLOW_SQUARE, MARKER_TYPE_HOLLOW_TRIANGLE, MARKER_TYPE_OCTAGON_PLUS, MARKER_TYPE_OCTAGON_X, MARKER_TYPE_PLUS, MARKER_TYPE_SQUARE_PLUS, MARKER_TYPE_SQUARE_X, MARKER_TYPE_X, TEXT_X_CENTER, TEXT_X_LEFT, TEXT_X_RIGHT, TEXT_Y_BOTTOM, TEXT_Y_CENTER, TEXT_Y_TOP
 
Fields inherited from class com.imsl.chart.AbstractChartNode
AUTOSCALE_DATA, AUTOSCALE_DENSITY, AUTOSCALE_NUMBER, AUTOSCALE_OFF, AUTOSCALE_WINDOW, AXIS_X, AXIS_Y, AXIS_Z, LABEL_TYPE_NONE, LABEL_TYPE_TITLE, LABEL_TYPE_X, LABEL_TYPE_Y, LABEL_TYPE_Z, TRANSFORM_CUSTOM, TRANSFORM_LINEAR, TRANSFORM_LOG
 
Constructor Summary
UChart(AxisXY axis, double[] sizeSample, int[] numberDefects)
          Creates a u-Chart given the number of defects rates for a series of samples with varying sample sizes.
UChart(AxisXY axis, double sizeSample, int[] numberDefects)
          Creates a u-Chart given the number of defects for a series of samples with equal sample sizes.
 
Method Summary
 void prePaint()
          Setup chart with current settings.
 
Methods inherited from class com.imsl.chart.qc.ShewhartControlChart
addCenterLine, addControlLimit, addLowerControlLimit, addUpperControlLimit, addWecoLimits, dataRange, getCenter, getCenterLine, getControlData, getLowerControlLimit, getMeanSampleSize, getSampleSize, getUpperControlLimit, paint, removeControlLimit, setCenter, setData, setData, setSampleSize, setSampleSize, setX
 
Methods inherited from class com.imsl.chart.Data
formatLabel
 
Methods inherited from class com.imsl.chart.ChartNode
addPickListener, firePickListeners, getALT, getAxis, getBackground, getBarGap, getBarType, getBarWidth, getChart, getChartTitle, getChildren, getClipData, getComponent, getConcatenatedViewport, getDataType, getDoubleBuffering, getExplode, getFillOutlineColor, getFillOutlineType, getFillPaint, getFillType, getGradient, getHREF, getLegend, getLineDashPattern, getMarkerDashPattern, getMarkerThickness, getMarkerType, getParent, getReference, getScreenAxis, getScreenSize, getScreenViewport, getSize, getSkipWeekends, getTextAngle, getTextColor, getTitle, getToolTip, getViewport, isBitSet, removePickListener, setALT, setBarGap, setBarType, setBarWidth, setChartTitle, setClipData, setCustomTransform, setDataType, setDoubleBuffering, setExplode, setFillOutlineColor, setFillOutlineColor, setFillOutlineType, setFillPaint, setFillPaint, setFillPaint, setFillType, setGradient, setGradient, setGradient, setHREF, setImage, setLineDashPattern, setMarkerDashPattern, setMarkerThickness, setMarkerType, setReference, setScreenSize, setSize, setSkipWeekends, setTextAngle, setTextColor, setTextColor, setTitle, setTitle, setToolTip, setViewport, setViewport
 
Methods inherited from class com.imsl.chart.AbstractChartNode
clone, clone, clone, clone, getAbstractParent, getAttribute, getAutoscaleInput, getAutoscaleMinimumTimeInterval, getAutoscaleOutput, getBooleanAttribute, getChildList, getColorAttribute, getCustomTransform, getDensity, getDoubleAttribute, getFillColor, getFont, getFontName, getFontSize, getFontStyle, getImage, getIntegerAttribute, getLabelType, getLightColor, getLineColor, getLineWidth, getLocale, getMarkerColor, getMarkerSize, getName, getNumber, getPaint, getStringAttribute, getTextFormat, getTickLength, getTransform, getX, getY, isAncestorOf, isAttributeSet, isAttributeSetAtThisNode, parseColor, remove, setAttribute, setAutoscaleInput, setAutoscaleMinimumTimeInterval, setAutoscaleOutput, setDensity, setFillColor, setFillColor, setFont, setFontName, setFontSize, setFontStyle, setImage, setLabelType, setLightColor, setLightColor, setLineColor, setLineColor, setLineWidth, setLocale, setMarkerColor, setMarkerColor, setMarkerSize, setName, setNumber, setPaint, setTextFormat, setTextFormat, setTickLength, setTransform, setX, setY, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

UChart

public UChart(AxisXY axis,
              double[] sizeSample,
              int[] numberDefects)
Creates a u-Chart given the number of defects rates for a series of samples with varying sample sizes.

Parameters:
axis - the AxisXY parent of this node
sizeSample - is an array containing the size of each sample.
numberDefects - is an array of arrays containing the number of defects. The number of defects must all be nonnegative. The length of the sizeSample and numberDefects arrays must be equal.

UChart

public UChart(AxisXY axis,
              double sizeSample,
              int[] numberDefects)
Creates a u-Chart given the number of defects for a series of samples with equal sample sizes.

Parameters:
axis - the AxisXY parent of this node
sizeSample - is the size of each sample.
numberDefects - is an array of arrays containing the number of defects. The number of defects must all be nonnegative.
Method Detail

prePaint

public void prePaint()
Setup chart with current settings.

Overrides:
prePaint in class ChartNode

JMSLTM Numerical Library 6.1

Copyright © 1970-2010 Visual Numerics, Inc.
Built July 30 2010.