Base SAS 9.1.3 Procedures Guide - Acsu Buffalo

PROBPLOT Statement
249
LGRID=linetype
specifies the line type for the grid requested by the GRID= option.
LGRID=1, which produces a solid line.
By default,
LHREF=linetype
LH=linetype
specifies the line type for the reference lines that you request with the HREF= option.
By default, LHREF=2, which produces a dashed line.
LOGNORMAL(SIGMA=value | EST )
LNORM(SIGMA=value | EST )
creates a lognormal probability plot for each value of the shape parameter σ given by
the mandatory SIGMA= lognormal-option. If you specify SIGMA=EST, the procedure
creates a plot based on a maximum likelihood estimate for σ. To obtain a graphical
estimate of σ, specify a list of values for the SIGMA= lognormal-option, and select
the value that most nearly linearizes the point pattern. To assess the point pattern, add
a diagonal distribution reference line corresponding to θ 0 and ζ 0 with the THETA=
and ZETA= lognormal-options. Alternatively, you can add a line corresponding to
estimated values of the threshold parameter θ 0 and the scale parameter ζ 0 with the
lognormal-options THETA=EST and ZETA=EST. Agreement between the reference
line and the point pattern indicates that the lognormal distribution with parameters
σ, θ 0 and ζ 0 is a good fit. You can specify the THRESHOLD= lognormal-option as
an alias for the THETA= lognormal-option and the SCALE= lognormal-option as an
alias for the ZETA= lognormal-option. See Example 3.26.
LVREF=linetype
specifies the line type for the reference lines requested with the VREF= option. By
default, LVREF=2, which produces a dashed line.
MU=value | EST
specifies the mean µ 0 for a normal probability plot requested with the NORMAL
option. Enclose the MU= normal-option in parentheses after the NORMAL option.
The MU= normal-option must be specified with the SIGMA= normal-option, and
they request a distribution reference line. You can specify MU=EST to request a
distribution reference line with µ 0 equal to the sample mean.
NADJ=value
specifies the adjustment value added to the sample size in the calculation of theoretical
percentiles. By default, NADJ= 1 4
. Refer to Chambers et al. (1983).
NAME=’string’
specifies a name for the plot, up to eight characters long, that appears in the PROC
GREPLAY master menu. The default value is ’UNIVAR’.
NCOLS=n
NCOL=n
specifies the number of columns in a comparative probability plot. By default,
NCOLS=1 if you specify only one class variable, and NCOLS=2 if you specify two
class variables. This option is not available unless you use the CLASS statement. If
you specify two class variables, you can use the NCOLS= option with the NROWS=
option.