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Problem Note 35234: Floating point zero divide error in PROC PANEL or PROC TSCSREG

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In both PROC TSCSREG and PROC PANEL if you have any cross sections with all missing values then the following error message will appear in the SAS Log:

  • ERROR: Floating Point Zero Divide error.

To circumvent the floating point zero divide error delete those cross sections with all missing values.

In PROC PANEL if you have any cross sections with only 2 observations and you see the following:

  1. FIXONE model
  2. Lagged dependent regressor

Then the following error message will appear in the SAS Log:

  • ERROR: Floating Point Zero Divide error.

Under these conditions there is only a single observation available to estimate the model for those cross sections with 2 observations. Rather than fail with this error, the procedure should produce a note which indicates that the first cross section has insufficient data.

To circumvent the problem, either use PROC TSCSREG rather than PROC PANEL to fit the one-way fixed effects model with the lagged dependent regressor or remove all cross-sections with only 2 observations and rerun the analysis in PROC PANEL.



Operating System and Release Information

Product FamilyProductSystemSAS Release
ReportedFixed*
SAS SystemSAS/ETSMicrosoft® Windows® for 64-Bit Itanium-based Systems9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows Server 2003 Datacenter 64-bit Edition9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows Server 2003 Enterprise 64-bit Edition9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows XP 64-bit Edition9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows Server 2003 Datacenter Edition9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows Server 2003 Enterprise Edition9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows Server 2003 Standard Edition9.1 TS1M3 SP49.2 TS2M2
Microsoft Windows XP Professional9.1 TS1M3 SP49.2 TS2M2
Windows Vista9.1 TS1M3 SP49.2 TS2M2
* 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.