Showing 54 of total 54 results (show query)

davidorme

caper:Comparative Analyses of Phylogenetics and Evolution in R

Functions for performing phylogenetic comparative analyses.

Maintained by David Orme. Last updated 1 years ago.

10.1 match 1 stars 7.41 score 928 scripts 5 dependents

venelin

PCMBase:Simulation and Likelihood Calculation of Phylogenetic Comparative Models

Phylogenetic comparative methods represent models of continuous trait data associated with the tips of a phylogenetic tree. Examples of such models are Gaussian continuous time branching stochastic processes such as Brownian motion (BM) and Ornstein-Uhlenbeck (OU) processes, which regard the data at the tips of the tree as an observed (final) state of a Markov process starting from an initial state at the root and evolving along the branches of the tree. The PCMBase R package provides a general framework for manipulating such models. This framework consists of an application programming interface for specifying data and model parameters, and efficient algorithms for simulating trait evolution under a model and calculating the likelihood of model parameters for an assumed model and trait data. The package implements a growing collection of models, which currently includes BM, OU, BM/OU with jumps, two-speed OU as well as mixed Gaussian models, in which different types of the above models can be associated with different branches of the tree. The PCMBase package is limited to trait-simulation and likelihood calculation of (mixed) Gaussian phylogenetic models. The PCMFit package provides functionality for inference of these models to tree and trait data. The package web-site <https://venelin.github.io/PCMBase/> provides access to the documentation and other resources.

Maintained by Venelin Mitov. Last updated 10 months ago.

9.8 match 6 stars 7.56 score 85 scripts 3 dependents

dwbapst

paleotree:Paleontological and Phylogenetic Analyses of Evolution

Provides tools for transforming, a posteriori time-scaling, and modifying phylogenies containing extinct (i.e. fossil) lineages. In particular, most users are interested in the functions timePaleoPhy, bin_timePaleoPhy, cal3TimePaleoPhy and bin_cal3TimePaleoPhy, which date cladograms of fossil taxa using stratigraphic data. This package also contains a large number of likelihood functions for estimating sampling and diversification rates from different types of data available from the fossil record (e.g. range data, occurrence data, etc). paleotree users can also simulate diversification and sampling in the fossil record using the function simFossilRecord, which is a detailed simulator for branching birth-death-sampling processes composed of discrete taxonomic units arranged in ancestor-descendant relationships. Users can use simFossilRecord to simulate diversification in incompletely sampled fossil records, under various models of morphological differentiation (i.e. the various patterns by which morphotaxa originate from one another), and with time-dependent, longevity-dependent and/or diversity-dependent rates of diversification, extinction and sampling. Additional functions allow users to translate simulated ancestor-descendant data from simFossilRecord into standard time-scaled phylogenies or unscaled cladograms that reflect the relationships among taxon units.

Maintained by David W. Bapst. Last updated 8 months ago.

3.5 match 21 stars 7.53 score 216 scripts 2 dependents

bioc

pepStat:Statistical analysis of peptide microarrays

Statistical analysis of peptide microarrays

Maintained by Gregory C Imholte. Last updated 5 months ago.

microarraypreprocessing

3.3 match 7 stars 5.62 score 4 scripts

lukejharmon

geiger:Analysis of Evolutionary Diversification

Methods for fitting macroevolutionary models to phylogenetic trees Pennell (2014) <doi:10.1093/bioinformatics/btu181>.

Maintained by Luke Harmon. Last updated 2 years ago.

openblascpp

2.3 match 1 stars 7.84 score 2.3k scripts 28 dependents

vanderleidebastiani

PCPS:Principal Coordinates of Phylogenetic Structure

Set of functions for analysis of Principal Coordinates of Phylogenetic Structure (PCPS).

Maintained by Vanderlei Julio Debastiani. Last updated 4 years ago.

4.5 match 1 stars 3.65 score 7 scripts

ohagen

TreeSimGM:Simulating Phylogenetic Trees under General Bellman Harris and Lineage Shift Model

Provides a flexible simulation tool for phylogenetic trees under a general model for speciation and extinction. Trees with a user-specified number of extant tips, or a user-specified stem age are simulated. It is possible to assume any probability distribution for the waiting time until speciation and extinction. Furthermore, the waiting times to speciation / extinction may be scaled in different parts of the tree, meaning we can simulate trees with clade-dependent diversification processes. At a speciation event, one species splits into two. We allow for two different modes at these splits: (i) symmetric, where for every speciation event new waiting times until speciation and extinction are drawn for both daughter lineages; and (ii) asymmetric, where a speciation event results in one species with new waiting times, and another that carries the extinction time and age of its ancestor. The symmetric mode can be seen as an vicariant or allopatric process where divided populations suffer equal evolutionary forces while the asymmetric mode could be seen as a peripatric speciation where a mother lineage continues to exist. Reference: O. Hagen and T. Stadler (2017). TreeSimGM: Simulating phylogenetic trees under general Bellman Harris models with lineage-specific shifts of speciation and extinction in R. Methods in Ecology and Evolution. <doi:10.1111/2041-210X.12917>.

Maintained by Oskar Hagen. Last updated 5 years ago.

0.5 match 2.73 score 18 scripts