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Program specific limits to dataset components

Source: R/program_limits.R
program_limits.Rd

Different programs impose different limits to different components of their datasets. Additionally, limits may vary between software versions. This primarily applies to Stata's product tiers, but also to (very) old SPSS versions. eatGADS offers a number of check functions - chiefly check4SPSS and check4Stata as wrappers - to ensure a GADSdat complies with these limits, and can be exported into an SPSS or Stata file. Use getProgramLimit for a more convenient interface for obtaining specific limits.

Usage

program_limits

Format

A data.frame listing relevant limits (see details) imposed to datasets by SPSS and Stata.

Details

While datasets have several components and characteristics, the following were deemed the most important and their limits implemented in this package's checks:

  • varNames: length of variable names

  • varLabels: length of variable labels

  • valLabels: length of value labels

  • stringvars: length of strings in character variables

  • nrows: number of observations

  • ncols: number of variables

While SPSS has only one set of limits (disregarding legacy limits for older versions), Stata employs different limits for different product versions [1]. Within this package, "SPSS" always implies SPSS 30, and "Stata" implies Stata 19/SE. Limits of Stata 19/BE and Stata 19/MP are implemented as additional options. However, no additional versions of SPSS have been implemented yet.

References

[1] Stata: Comparison of limits