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The RELIABILITY Procedure |
Table 30.30: Analysis Options
Option | Option Description |
CONFIDENCE=number | specifies the confidence coefficient for all confidence intervals. The number must be between 0 and 1. The default value is 0.95 |
CONVERGE=number | specifies the convergence criterion for maximum likelihood fit. |
CONVH=number | specifies the convergence criterion for the relative Hessian convergence criterion |
CORRB | requests parameter correlation matrix |
COVB | requests parameter covariance matrix |
FITTYPE= | specifies method of estimating distribution parameters |
LSYX | -least squares fit to the probability plot. The probability axis is the dependent variable. |
| LSXY | -least squares fit to the probability plot. The lifetime axis is the dependent variable. |
| MLE | -maximum likelihood (default) |
| MODEL | -use the fit from the preceding MODEL statement |
| NONE | -no fit is computed |
| WEIBAYES | -Weibayes method |
<(CONFIDENCE|CONF=number)> | The number is the confidence coefficient for the Weibayes fit. The number is between 0 and 1, with a default value of 0.95. |
ITPRINT | requests iteration history for maximum likelihood fit |
LRCL | requests likelihood ratio confidence intervals for distribution parameters |
LRCLPER | requests likelihood ratio confidence intervals for distribution percentiles |
LOCATION=number < LINIT > | specifies fixed or initial value of location parameter |
MAXIT=number | specifies maximum number of iterations allowed for maximum likelihood fit |
NOPCTILES | suppress computation of percentiles |
PCTLIST=number-list | specifies list of percentages for which to compute percentile estimates. The number-list must be a list of numbers separated by blanks or commas. Each number in the list must be between 0 and 100. |
PPOS= | specifies plotting position type. |
EXPRANK | -expected ranks |
|MEDRANK | -median ranks |
|MEDRANK1 | -median ranks (exact formula) |
|KM | -Kaplan-Meier |
|MKM | -modified Kaplan-Meier (default) |
PPOUT | request table of cumulative probabilities |
PSTABLE=number | specifies stable parameterization. The number must be between zero and one. See "Stable Parameters" for further information. |
RELATION=ARRHENIUS | ARRHENIUS2 | LINEAR | POWER | specifies type of relationship between life and stress. This determines the horizontal scale used in the relation plot. See Table 30.45 for definitions of the transformations. |
READOUT | analyzes data with readout structure |
SCALE=number < SCINIT > | specifies fixed or initial value of scale parameter |
SHAPE=number < SHINIT > | specifies fixed or initial value of shape parameter |
SINGULAR=number | specifies singularity criterion for matrix inversion |
SURVTIME=number-list | requests that survival function be computed for values in number-list |
THRESHOLD=number | specifies a fixed threshold parameter. See Table 30.37 for the distributions with a threshold parameter. |
Option | Option Description |
CENSYMBOL=symbol | (symbol list) | specifies symbols for censored values. The symbol is one of the symbol names (plus, star, square, diamond, triangle, hash, paw, point, dot, circle) or a letter (A -Z). If you are creating overlaid plots for groups of data, you can specify different symbols for the groups with a list of symbols or letters, separated by blanks, enclosed in parentheses. If no CENSYMBOL option is specified, the symbol used for censored values is the same as for failures. |
HOFFSET=value | specifies an offset for horizontal axis |
INBORDER | requests a border around plots |
JITTER=number | specifies amount to jitter overlaying plot symbols, in units of symbol width |
LFIT=linetype | specifies a line style for fit line and confidence curves |
LBOXES=number | specifies a line style for boxplots |
NOCENPLOT | suppresses plotting of censored data points |
NOCONF | suppresses plotting of percentile confidence curves |
NOFIT | suppresses plotting of fit line and percentile confidence curves |
NOFRAME | suppresses frame around plotting area |
NOPPLEGEND | suppresses legend for overlaid probability plots |
NORPLEGEND | suppresses legend for relation plot |
PLOTDATA <DATA | MEDIANS | BOXES> | requests that the data be plotted on the relationplot and specifies the representation of the data populations to be plotted |
PLOTFIT <number-list> | specifies that percentiles of the fitted distribution be plotted on the relation plot. The optional number-list is a list of percentiles (between 0 and 100), and, if not specified, the 50th percentile (median) is plotted. |
PPLEGEND = legend-statement-name | NONE | identifies a LEGENDn statement to specify legend for overlaid probability plots |
PPLOT | places a probability plot on the same page as the relation plot |
RPLEGEND = legend-statement-name | NONE | identifies a LEGENDn statement to specify legend for the relation plot |
TURNVLABELS | vertically strings out characters in labels for vertical axis |
VOFFSET=value | specifies length of offset at upper end of vertical axis |
WFIT=linetype | specifies line width for fit line and confidence curves |
Option | Option Description | ||||||||||||||
HREF < (INTERSECT) >=value-list | requests reference lines perpendicular to horizontal axis. If (INTERSECT) is specified, a second reference line perpendicular to the vertical axis is drawn that intersects the fit line at the same point as the horizontal axis reference line. If a horizontal axis reference line label is specified, the intersecting vertical axis reference line is labeled with the vertical axis value. | ||||||||||||||
HREFLABELS=('label1' ... 'labeln') | specifies labels for HREF=lines | ||||||||||||||
HREFLABPOS=n | specifies vertical position of labels for HREF=lines.
The valid values for n and the corresponding label placements are
shown below.
| ||||||||||||||
LHREF=linetype | specifies a line style for HREF=lines | ||||||||||||||
LSREF=linetype | specifies a line style for SREF= lines | ||||||||||||||
LVREF=linetype | specifies a line style for VREF= lines | ||||||||||||||
SREF=value-list | specifies reference lines perpendicular to horizontal stress axis | ||||||||||||||
SREFLABELS=('label1' ... 'labeln') | specifies labels for SREF= lines | ||||||||||||||
SREFLABPOS=n | specifies horizontal position of labels for SREF= lines.
The valid values for n and the corresponding label placements are
shown below.
| ||||||||||||||
VREF < (INTERSECT) >=value-list | requests reference lines perpendicular to vertical axis.If (INTERSECT) is specified, a second reference line perpendicular to the horizontal axis is drawn that intersects the fit line at the same point as the vertical axis reference line. If a vertical axis reference line label is specified, the intersecting horizontal axis reference line is labeled with the horizontal axis value. | ||||||||||||||
VREFLABELS=('label1' ... 'labeln') | specifies labels for VREF= lines | ||||||||||||||
VREFLABPOS=n | specifies horizontal position of labels for VREF= lines.
The valid values for n and the corresponding label placements are
shown below.
|
Option | Option Description |
FONT=font | specifies a software font for text |
HEIGHT=value | specifies height of text used outside framed areas |
INFONT=font | specifies a software font for text inside framed areas |
INHEIGHT=value | specifies height of text inside framed areas |
Option | Option Description |
LAXIS=value1 to value2<by value3> | specifies tick mark values for the lifetime
axis. value1, value2, and value3 must be numeric, and value1 must be
less than value2.
The lower tick mark is value1. Tick marks are drawn at
increments of value3.
The last tick mark is the greatest value that does not exceed value2.
If value3 is omitted, a value of 1 is used.
This method of specification of tick marks is not valid for logarithmic
axes.
Examples of LAXIS= lists are
laxis = -1 to 10 laxis = 0 to 200 by 10 |
LGRID=number | specifies a line style for all grid lines. The number is between 1 and 46 and specifies a linestyle for grids. |
LIFELOWER | LLOWER=number | specifies the lower limit on the lifetime axis scale. The LLOWER option specifies number as the lower lifetime axis tick mark. The tick interval and the upper lifetime axis limit are determined automatically. This option has no effect if the LAXIS option is used. |
LIFEUPPER | LUPPER=number | specifies the upper limit on the lifetime axis scale. The LUPPER option specifies number as the upper lifetime axis tick mark. The tick interval and the lower lifetime axis limit are determined automatically. This option has no effect if the LAXIS option is used. |
MPGRID | adds a minor grid for the probability axis |
MINORLOGGRID | adds a minor grid for log axes |
NOGRID | suppresses grid lines |
NOLLABEL | suppresses label for life, or analysis variable, axis |
NOLTICK | suppresses tick marks and tick mark labels for lifetime or analysis variable axis |
NOPLABEL | suppresses label for probability axis |
NOPTICK | suppresses tick marks and tick mark labels for probability axis |
NOSLABEL | suppresses label for stress axis |
NOSTICK | suppresses tick marks and tick mark labels for stress axis |
NSTRESSTICK=number | specifies the number of tick intervals for stress axis for relation plot |
NTICK=number | specifies the number of tick intervals for the lifetime axis. This option has no effect if the LAXIS option is used. |
PCTLOWER | PLOWER=number | specifies lower limit on probability axis scale |
PCTUPPER | PUPPER=number | specifies upper limit on probability axis scale |
STRESSLOWER | SLOWER=number | specifies lower limit on stress axis scale |
STRESSUPPER | SUPPER=number | specifies upper limit on stress axis scale |
PAXISLABEL=`string' | specifies label for probability axis |
WAXIS=n | specifies line thickness for axes and frame |
Option | Option Description |
DESCRIPTION=`string' | description for graphics catalog member |
NAME=`string' | name for plot in graphics catalog |
Table 30.36: Color and Pattern Options
Option | Option Description |
CAXIS=color | color for axis |
CBOXES=color | color for box frame for boxplots |
CBOXFILL=color | color for filling boxes for boxplots |
CCENSOR=color | color for filling censor plot area |
CENCOLOR=color | color for censor symbol |
CFIT=color | color for fit line and confidence curves |
CFRAME=color | color for frame |
CGRID=color | color for grid lines |
CHREF=color | color for HREF=lines |
CPLOTFIT=color | color for percentile lines |
CSREF=color | color for SREF= lines |
CTEXT=color | color for text |
CVREF=color | color for VREF= lines |
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