A suite of functions for reading in a rate file in XML format, 
    stratify a cohort, and calculate 'SMRs' from the stratified cohort and rate file.

Implementation of the three-step approach of latent transition cognitive diagnosis model (CDM) with covariates. This approach can be used to assess changes in attribute mastery status and to evaluate the covariate effects on both the initial states and transition probabilities over time using latent logistic regression. Because stepwise approaches often yield biased estimates, correction for classification error probabilities (CEPs) is considered in this approach. The three-step approach for latent transition CDM with covariates involves the following steps: (1) fitting a CDM to the response data without covariates at each time point separately, (2) assigning examinees to latent states at each time point and computing the associated CEPs, and (3) estimating the latent transition CDM with the known CEPs and computing the regression coefficients. The method was proposed in Liang et al. (2023) <doi:10.3102/10769986231163320> and demonstrated using mental health data in Liang et al. (in press; annotated R code and data utilized in this example are available in Mendeley data) <doi:10.17632/kpjp3gnwbt.1>.

Curated datasets from US Long Term Ecological Research sites.

Allows identification of palettes derived from LTER (Long Term Ecological Research) 
   photographs based on user criteria.
   Also facilitates extraction of palettes from users' photos directly.

Set of the data science tools created by various members of the Long Term 
    Ecological Research (LTER) community. These functions were initially written largely 
    as standalone operations and have later been aggregated into this package.

Implementation of LT-FH++, an extension of
    the liability threshold family history (LT-FH) model.
    LT-FH++ uses a Gibbs sampler for sampling from the truncated 
    multivariate normal distribution and allows for 
    flexible family structures. LT-FH++ was first described in 
    Pedersen, Emil M., et al. (2022) 
    <https://pure.au.dk/ws/portalfiles/portal/353346245/> 
    as an extension to LT-FH with more flexible family structures, 
    and again as the age-dependent liability threshold (ADuLT) model
    Pedersen, Emil M., et al. (2023) 
    <https://www.nature.com/articles/s41467-023-41210-z> 
    as an alternative to traditional time-to-event genome-wide
    association studies, where family history was not considered.