Calculation of rectifying LTPD and AOQL plans for sampling inspection by variables which minimize mean inspection cost per lot of process average quality.

Implements the conditional inference forest and relative risk forest 
             algorithm to modeling left-truncated right-censored data with time-invariant        
             covariates, and (left-truncated) right-censored survival data with time-varying 
             covariates. It also provides functions to tune the parameters and evaluate the 
             model fit. See Yao et al. (2022) <doi:10.1177/09622802221111549>.

Recursive partition algorithms designed for fitting survival tree with left-truncated and right censored (LTRC) data, as well as interval-censored data.
    The LTRC trees can also be used to fit survival tree with time-varying covariates.

Methods of developing linear time series modelling.
 Methods are given for loglikelihood computation, forecasting
  and simulation.

Implements local spatial and local spatiotemporal Kriging based on local spatial and local spatiotemporal variograms, respectively. The method is documented in Kumar et al (2013) <https://www.nature.com/articles/jes201352)>.

Implementation of robust and sparse PCA algorithm of Wang and Van Aelst (2019) <DOI:10.1080/00401706.2019.1671234>.

Sparklines are small plots (about one line of text high),
  made popular by Edward Tufte.  This package is the interface from R
  to the LaTeX package sparklines by Andreas Loeffer and Dan Luecking
  (<http://www.ctan.org/pkg/sparklines>).  It can work with Sweave or
  knitr or other engines that produce TeX.  The package can be used to
  plot vectors, matrices, data frames, time series (in ts or zoo format).

An interface to 'LuaJIT' <https://luajit.org>, a just-in-time 
    compiler for the 'Lua' scripting language <https://www.lua.org>. Allows 
    users to run 'Lua' code from 'R'.

Functions to work with date-times and time-spans: fast and
    user friendly parsing of date-time data, extraction and updating of
    components of a date-time (years, months, days, hours, minutes, and
    seconds), algebraic manipulation on date-time and time-span objects.
    The 'lubridate' package has a consistent and memorable syntax that
    makes working with dates easy and fun.