Found 117 packages in 0.02 seconds
Interpolation and Extrapolation with Beta Diversity for Three Dimensions of Biodiversity
As a sequel to 'iNEXT', the 'iNEXT.beta3D' package provides functions to compute
standardized taxonomic, phylogenetic, and functional diversity (3D) estimates
with a common sample size (for alpha and gamma diversity) or sample coverage
(for alpha, beta, gamma diversity as well as dissimilarity or turnover indices).
Hill numbers and their generalizations are used to quantify 3D and to make
multiplicative decomposition (gamma = alpha x beta). The package also features
size- and coverage-based rarefaction and extrapolation sampling curves to
facilitate rigorous comparison of beta diversity across datasets.
See Chao et al. (2023)
Truncated Functional Generalized Linear Models
An implementation of the methodologies described in Xi Liu, Afshin A. Divani, and Alexander Petersen (2022)
Wavelet ANN Model
The wavelet and ANN technique have been combined to reduce the effect of data noise. This wavelet-ANN conjunction model is able to forecast time series data with better accuracy than the traditional time series model. This package fits hybrid Wavelet ANN model for time series forecasting using algorithm by Anjoy and Paul (2017)
Exploratory Analysis of Genetic and Genomic Data
Toolset for the exploration of genetic and genomic data. Adegenet provides formal (S4) classes for storing and handling various genetic data, including genetic markers with varying ploidy and hierarchical population structure ('genind' class), alleles counts by populations ('genpop'), and genome-wide SNP data ('genlight'). It also implements original multivariate methods (DAPC, sPCA), graphics, statistical tests, simulation tools, distance and similarity measures, and several spatial methods. A range of both empirical and simulated datasets is also provided to illustrate various methods.
Data Sets for 'ArchaeoPhases' Vignettes
Provides the data sets used to build the 'ArchaeoPhases' vignettes. The data sets were formerly distributed with 'ArchaeoPhases', however they exceed current CRAN policy for package size.
Measuring Ecosystem Multi-Functionality and Its Decomposition
Provide simple functions to (i) compute a class of multi-functionality measures for a single ecosystem for given function weights, (ii) decompose gamma multi-functionality for multiple ecosystems into a within-ecosystem component (alpha multi-functionality) and an among-ecosystem component (beta multi-functionality). In each case, the correlation between functions can be corrected for. Based on biodiversity and ecosystem function data, this software also facilitates graphics for assessing biodiversity-ecosystem functioning relationships across scales.
'REPPlab' via a Shiny Application
Performs exploratory projection pursuit via 'REPPlab' (Daniel Fischer, Alain Berro, Klaus Nordhausen & Anne Ruiz-Gazen (2019)
Collection and Analysis of Otolith Shape Data
Studies otolith shape variation among fish populations.
Otoliths are calcified structures found in the inner ear of teleost fish and their shape has
been known to vary among several fish populations and stocks, making them very useful in taxonomy,
species identification and to study geographic variations. The package extends previously described
software used for otolith shape analysis by allowing the user to automatically extract closed
contour outlines from a large number of images, perform smoothing to eliminate pixel noise described in Haines and Crampton (2000)
Tools for Exploring Multivariate Data via ICS/ICA
Implementation of Tyler, Critchley, Duembgen and Oja's (JRSS B, 2009,
Comparison of Variance - Covariance Patterns
Comparison of variance - covariance patterns using relative principal component analysis (relative eigenanalysis), as described in Le Maitre and Mitteroecker (2019)