Maximum size limitations on specifications and data

The Facets software program will operate with a minimum of 1 facet, 1 element and two observations per element. For statistically stable measures to be estimated, 30 observations per element are needed: www.rasch.org/rmt/rmt74m.htm

Size Limitations on Specifications and Data
Component	Maximum number	Limit	Notes
Responses in file	2,147,438,648 tested to 250,000,000	D	Data=
Ordinal response categories in a rating scale	255 tested to 255	F	Models= or Rating scale=, per rating scale
Facets	255 tested to 60	F	Facets=
Elements	2,147,438,648 tested to 1,600,000	D	Labels=, numbered up to 2,147,483,648
Element label length	32,000	F	Labels=
Element groups	32,766	F	Labels=, per facet
Model statements	32,767	F	Models=
Rating scales or other ordinal response scales	32,767	F	Models= or Rating scale=, includes scales generated by models with "#"
Bias terms	2,147,438,648	D	Models=, per model statement
Table arrangements	255	F	Arrange=
Element measure range	16 logits	P	Estimation, can go higher, useful up to 44 logits range
D = limited by available disk and memory space F = Fixed upper limit P = limited by arithmetic precision.