Calculates the dutch air quality index (LKI). This index was 
    created on the basis of scientific studies of the health effects of air 
    pollution. From these studies it can be deduced at what concentrations a 
    certain percentage of the population can be affected. For more information 
    see: <https://www.rivm.nl/bibliotheek/rapporten/2014-0050.pdf>.

Continuous smoothing of probability density function on a compact or semi-infinite support is performed using four continuous associated kernels: extended beta, gamma, lognormal and reciprocal inverse Gaussian. The cross-validation technique is also implemented for bandwidth selection.

Simple functions for joining strings. Construct human-friendly messages whose elements aren't known in advance, like in stop, warning, or message, from clean code.

Concatenation of multiple sequence alignments based on a
    correspondence table that can be edited in Excel <doi:10.5281/zenodo.5130603>.

The concaveman function ports the 'concaveman' (<https://github.com/mapbox/concaveman>) library from 'mapbox'. It computes the concave polygon(s) for one or several set of points.

There are 4 main functions in this package: ckmeans(), lcvqe(), mpckm() and ccls(). They take an unlabeled dataset and two lists of must-link and cannot-link constraints as input and produce a clustering as output.

Provides a function for fast computation of the connected
    components of an undirected graph (though not faster than the
    components() function of the 'igraph' package) from the edges or the
    adjacency matrix of the graph. Based on this one, a function to
    compute the connected components of a triangle 'rgl' mesh is also
    provided.

Analyzes data from a Conconi et al. (1996) <doi:10.1055/s-2007-972887>
    treadmill fitness test where speed is augmented by a constant amount every
    set number of seconds to estimate the anaerobic (lactate) threshold speed
    and heart rate. It reads a TCX file, allows optional removal observations
    from before and after the actual test, fits a change-point linear model
    where the change-point is the estimate of the lactate threshold, and plots
    the data points and fit model. Details of administering the fitness test are
    provided in the package vignette. Functions work by default for Garmin
    Connect TCX exports but may require additional data preparation for heart
    rate, time, and speed data from other sources.