COMPHISTOGRAM Statement
- BARLABEL=COUNT | PERCENT | PROPORTION
-
displays labels above the histogram bars. You can specify
BARLABEL=COUNT to display the number of observations associated
with a given bar, BARLABEL=PERCENT to display the percentage
of observations, and BARLABEL=PROPORTION to display the proportion
of observations.
- CLIPSPEC=CLIP | NOFILL
-
specifies that histogram bars are to be clipped at the upper and lower
specification limit lines when there are no observations outside the
specification limits.
The bar intersecting the lower specification limit is clipped if there
are no observations less than the lower limit; the bar intersecting the upper
specification limit is clipped if there are no observations greater than
the upper limit.
If you specify CLIPSPEC=CLIP, histogram bars are truncated at the
specification limits. If you specify CLIPSPEC=NOFILL, the portion
of a filled histogram bar outside the specification limit is left unfilled.
Specifying CLIPSPEC=NOFILL when histogram bars are not filled has
no effect.
- CTEXTSIDE=color
-
specifies the color of the row labels displayed along the left side of
a comparative histogram.
By default, the CTEXT= color is used for these labels.
- CTEXTTOP=color
-
specifies the color of the column labels displayed along the top of
a comparative histogram.
By default, the CTEXT= color is used for these labels.
- ENDPOINTS=value-list | KEY | UNIFORM
-
specifies that comparative histogram interval endpoints, rather than
midpoints, are to be aligned with horizontal axis tick marks, and
specifies how the endpoints are to be determined.
The method you specify is used for all process variables
analyzed with the COMPHISTOGRAM statement.
If you specify ENDPOINTS=value-list, the
values must be listed in increasing order
and must be evenly spaced. The number of endpoint values is one
greater than the number of intervals in the resulting comparative
histogram.
The first value is the lower bound of the first interval
and the last value is the upper bound of the last interval.
If the range of the values does not cover the range of the data
and any specification limits (LSL and USL) that are given,
the list is extended in both directions as necessary to cover these values.
If you specify ENDPOINTS=KEY, the procedure first
determines the endpoints for the data in the key cell.
The initial number of intervals is based on the number
of observations in the key cell using the method of
Terrell and Scott (1985). The endpoint list for the
key cell is then extended in both directions as
necessary until it spans the data in the remaining cells.
If the key cell contains no observations, the method of determining
intervals reverts to ENDPOINTS=UNIFORM.
If you specify ENDPOINTS=UNIFORM, the procedure
determines the endpoints using all the observations
as if there were no cells. In other words, the number
of endpoints is based on the total sample size using
the method of Terrell and Scott (1985).
Copyright © 2001 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
