Computational Resources
In the following discussion, let
Memory Requirements
The amount of memory in bytes for temporary
storage needed to process the data is

c(4v^{2} + 28v + 4l + 68) + 16v^{2} + 96v + 4l
With the ANOVA option, the temporary
storage must be increased by 16v bytes.
The DISTANCE option requires an additional
temporary storage of 4v^{2}+4v bytes.
Time Requirements
The following factors determine the time
requirements of the CANDISC procedure.
 The time needed for reading the data and computing
covariance matrices is proportional to nv^{2}.
PROC CANDISC must also look up each class level in the list.
This is faster if the data are sorted by the CLASS variable.
The time for looking up class levels is proportional
to a value ranging from n to nlog(c).
 The time for inverting a covariance matrix is
proportional to v^{3}.
 The time required for the canonical discriminant
analysis is proportional to v^{3}.
Each of the preceding factors has a different
constant of proportionality.
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.