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Problem Note 40033: Incorrect plot or abnormal termination with PLOTS=ALL or PLOTS=EFFECT and only CLASS variables in model

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PROC LOGISTIC may take a long time to complete and the procedure or SAS may abnormally terminate if both of the following conditions are true:

  1. your model contains only variables which are specified in the CLASS statement, and
  2. in the PROC LOGISTIC statement you specify the PLOTS=EFFECT option with no effect suboptions or you specify the PLOTS=ALL option

The execution time increases with the number of combinations of the levels of the CLASS variables. When the number of combinations becomes sufficiently large, the procedure terminates abnormally issuing such error messages as Read Access Violation or other system-specific messages. SAS may also terminate.

Under the above conditions, PROC LOGISTIC does not produce the default effects plot as described in the LOGISTIC documentation. Instead of producing a plot of the predicted probability versus the first CLASS covariate with a line for each level of the second CLASS covariate, it attempts to plot the predicted probability versus all combinations of the CLASS variables.

To avoid this problem, specify effect suboptions to produce the desired plot. The default plot described in the LOGISTIC documentation is produced by specifying PLOTS=EFFECT(X=ClassVar1 SLICEBY=ClassVar2 JOIN=YES), where ClassVar1 and ClassVar2 are the first and second CLASS variables in the model respectively.



Operating System and Release Information

Product FamilyProductSystemSAS Release
ReportedFixed*
SAS SystemSAS/STATz/OS9.2 TS1M09.3 TS1M0
Microsoft® Windows® for 64-Bit Itanium-based Systems9.2 TS1M09.3 TS1M0
Microsoft Windows Server 2003 Datacenter 64-bit Edition9.2 TS1M09.3 TS1M0
Microsoft Windows Server 2003 Enterprise 64-bit Edition9.2 TS1M09.3 TS1M0
Microsoft Windows XP 64-bit Edition9.2 TS1M09.3 TS1M0
Microsoft® Windows® for x649.2 TS1M09.3 TS1M0
Microsoft Windows Server 2003 Datacenter Edition9.2 TS1M09.3 TS1M0
Microsoft Windows Server 2003 Enterprise Edition9.2 TS1M09.3 TS1M0
Microsoft Windows Server 2003 Standard Edition9.2 TS1M09.3 TS1M0
Microsoft Windows XP Professional9.2 TS1M09.3 TS1M0
Windows Vista9.2 TS1M09.3 TS1M0
Windows Vista for x649.2 TS1M09.3 TS1M0
64-bit Enabled AIX9.2 TS1M09.3 TS1M0
64-bit Enabled HP-UX9.2 TS1M09.3 TS1M0
64-bit Enabled Solaris9.2 TS1M09.3 TS1M0
HP-UX IPF9.2 TS1M09.3 TS1M0
Linux9.2 TS1M09.3 TS1M0
Linux for x649.2 TS1M09.3 TS1M0
OpenVMS on HP Integrity9.2 TS1M09.3 TS1M0
Solaris for x649.2 TS1M09.3 TS1M0
* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.