Tools to create and query database from the U.S. National Library
  of Medicine's Clinical Trials database <https://clinicaltrials.gov/>. Functions
  provide access a variety of techniques for searching the data using range
  queries, categorical filtering, and by searching for full-text keywords.

Computerized tomography (CT) can be used to assess certain wood properties when wood disks or logs are scanned. Wood density profiles (i.e. variations of wood density from pith to bark) can yield important information used for studies in forest resource assessment, wood quality and dendrochronology studies. The first step consists in transforming grey values from the scan images to density values. The packages then proposes a unique method to automatically locate the pith by combining an adapted Hough Transform method and a one-dimensional edge detector. Tree ring profiles (average ring density, earlywood and latewood density, ring width and percent latewood for each ring) are then obtained.

A simple way to assess the stability of candidate housekeeping genes is implemented in this package.

An 'RStudio' and 'Positron' add-in that prompts the user for a web 'URL',
    fetches the page content, extracts 'R' code chunks, and inserts those code chunks
    into the active editor at the current cursor position. Supports extraction of raw 
    'Markdown' or 'Quarto' source files, 'GitHub' Gist and rendered 'HTML' pages that have 
    markup elements with 'R'-related classes.

Provides tools for fitting continuous-time autoregressive (CAR) and
    complex CAR (CZAR) models for irregularly sampled time series using an exact
    Gaussian state-space formulation and Kalman filtering/smoothing. Implements
    maximum-likelihood estimation with stable parameterizations of characteristic
    roots, model selection via AIC, residual and spectral diagnostics, forecasting
    and simulation, and extraction of fitted state estimates. Methods are
    described in Wang (2013) <doi:10.18637/jss.v053.i05>.