is_discrete: Check if covariates are discrete
In baker: Nested Partially Latent Class Models

is_discrete checks if the specified covariates could be regarded as discrete variables.

1	is_discrete(X, X_reg)

`X`	A data frame of covariates
`X_reg`	The vector of covariates that will stratify the analyses. These variables have to be categorical. Or a formula (can be tested by `plyr::is.formula`), e.g., `~as.factor(SITE8) + as.factor(AGECAT > 1)`.

Note that this function should be used with caution. It used

nrow(X)/nrow(unique(X[,X_reg,drop=FALSE]))>10

as an ad hoc criterion. It is not the same as plyr::is.discrete()

TRUE for all being discrete; FALSE otherwise.

baker documentation built on Feb. 2, 2022, 9:06 a.m.

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