com.imsl.chart.qc

Class PChart

java.lang.Object

com.imsl.chart.AbstractChartNode

com.imsl.chart.ChartNode

com.imsl.chart.Data

com.imsl.chart.qc.ShewhartControlChart

com.imsl.chart.qc.PChart

All Implemented Interfaces:

Serializable, Cloneable

public class PChart
extends ShewhartControlChart

PChart is a p-chart for monitoring the defect rate when defects are not rare.

The defect rate is the number of defects found divided by the number of samples inspected. The number of defects are not assumed to be rare. Control limits are computed using the binomial distribution. If defects are rare, use UChart instead. The control limits are at

where 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 . Additional control limits can be added. The method addWeco adds control limits with k = -2, -1, 1, 2. The true fraction conforming p can be used by setting the attribute "Center" to p. The lower control limit is forced to have a minimum value of zero. The upper control limit is forced to have a maximum value of one.

See Also:

Example, NIST Engineering Statistics Handbook: Proportions Control Charts, 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

Constructors

Constructor and Description
PChart(AxisXY axis, int[] sampleSize, double[] defectRate) Creates a p-Chart given the defect rates for a series of samples with varying sample sizes.
PChart(AxisXY axis, int[] sampleSize, int[] numberDefects) Creates a p-Chart given the number of defects for a series of samples with varying sample sizes.
PChart(AxisXY axis, int sampleSize, double[] defectRate) Creates a p-Chart given the defect rates for a series of samples with equal sample sizes.
PChart(AxisXY axis, int sampleSize, int[] numberDefects) Creates a p-Chart given the number of defects for a series of samples with equal sample sizes.

Method Summary

Methods

Modifier and Type	Method and Description
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

PChart

public PChart(AxisXY axis,
      int[] sampleSize,
      double[] defectRate)

Creates a p-Chart given the defect rates for a series of samples with varying sample sizes.

Parameters:

axis - the AxisXY parent of this node

sampleSize - is an array containing the number of observations in each sample. It must be at least one.

defectRate - is an array containing defect rates of the samples. The defect rates must all be in the range [0,1]. The lengths of the arrays sampleSize and defectRate must be equal.

PChart

public PChart(AxisXY axis,
      int[] sampleSize,
      int[] numberDefects)

Creates a p-Chart given the number of defects for a series of samples with varying sample sizes.

Parameters:

axis - the AxisXY parent of this node

sampleSize - is an array containing the number of observations in each sample. It must be at least one.

numberDefects - is an array of arrays containing the number of defects in each of a series of samples. The number of defects should not be less than zero.

PChart

public PChart(AxisXY axis,
      int sampleSize,
      double[] defectRate)

Creates a p-Chart given the defect rates for a series of samples with equal sample sizes.

Parameters:

axis - the AxisXY parent of this node

sampleSize - is the number of observations in each sample. It must be at least one.

defectRate - is an array containing defect rates of the samples. The defect rates must all be in the range [0,1].

PChart

public PChart(AxisXY axis,
      int sampleSize,
      int[] numberDefects)

Creates a p-Chart given the number of defects for a series of samples with equal sample sizes.

Parameters:

axis - the AxisXY parent of this node

sampleSize - is the number of observations in each sample. Each sample must contain at least one observation.

numberDefects - is an array containing the number of defects in each of a series of samples. The number of defects should not be less than zero.

Method Detail

prePaint

public void prePaint()

Setup chart with current settings.

Overrides:

prePaint in class ChartNode