Showing 16 of total 16 results (show query)
rspatial
raster:Geographic Data Analysis and Modeling
Reading, writing, manipulating, analyzing and modeling of spatial data. This package has been superseded by the "terra" package <https://CRAN.R-project.org/package=terra>.
Maintained by Robert J. Hijmans. Last updated 15 hours ago.
163 stars 17.23 score 58k scripts 562 dependents
r-lidar
lidR:Airborne LiDAR Data Manipulation and Visualization for Forestry Applications
Airborne LiDAR (Light Detection and Ranging) interface for data manipulation and visualization. Read/write 'las' and 'laz' files, computation of metrics in area based approach, point filtering, artificial point reduction, classification from geographic data, normalization, individual tree segmentation and other manipulations.
Maintained by Jean-Romain Roussel. Last updated 2 months ago.
alsforestrylaslazlidarpoint-cloudremote-sensingopenblascppopenmp
623 stars 14.47 score 844 scripts 8 dependents
natverse
nat:NeuroAnatomy Toolbox for Analysis of 3D Image Data
NeuroAnatomy Toolbox (nat) enables analysis and visualisation of 3D biological image data, especially traced neurons. Reads and writes 3D images in NRRD and 'Amira' AmiraMesh formats and reads surfaces in 'Amira' hxsurf format. Traced neurons can be imported from and written to SWC and 'Amira' LineSet and SkeletonGraph formats. These data can then be visualised in 3D via 'rgl', manipulated including applying calculated registrations, e.g. using the 'CMTK' registration suite, and analysed. There is also a simple representation for neurons that have been subjected to 3D skeletonisation but not formally traced; this allows morphological comparison between neurons including searches and clustering (via the 'nat.nblast' extension package).
Maintained by Gregory Jefferis. Last updated 5 months ago.
3dconnectomicsimage-analysisneuroanatomyneuroanatomy-toolboxneuronneuron-morphologyneurosciencevisualisation
67 stars 9.94 score 436 scripts 2 dependents
mhahsler
pomdp:Infrastructure for Partially Observable Markov Decision Processes (POMDP)
Provides the infrastructure to define and analyze the solutions of Partially Observable Markov Decision Process (POMDP) models. Interfaces for various exact and approximate solution algorithms are available including value iteration, point-based value iteration and SARSOP. Smallwood and Sondik (1973) <doi:10.1287/opre.21.5.1071>.
Maintained by Michael Hahsler. Last updated 4 months ago.
control-theorymarkov-decision-processesoptimizationcpp
19 stars 7.03 score 21 scripts
flr
mse:Tools for Running Management Strategy Evaluations using FLR
A set of functions and methods to enable the development and running of Management Strategy Evaluation (MSE) analyses, using the FLR packages and classes and the a4a methods and algorithms.
Maintained by Iago Mosqueira. Last updated 1 months ago.
4 stars 6.99 score 137 scripts 3 dependents
blue-matter
SAMtool:Stock Assessment Methods Toolkit
Simulation tools for closed-loop simulation are provided for the 'MSEtool' operating model to inform data-rich fisheries. 'SAMtool' provides a conditioning model, assessment models of varying complexity with standardized reporting, model-based management procedures, and diagnostic tools for evaluating assessments inside closed-loop simulation.
Maintained by Quang Huynh. Last updated 1 months ago.
3 stars 6.39 score 36 scripts 1 dependents
dfriend21
quadtree:Region Quadtrees for Spatial Data
Provides functionality for working with raster-like quadtrees (also called “region quadtrees”), which allow for variable-sized cells. The package allows for flexibility in the quadtree creation process. Several functions defining how to split and aggregate cells are provided, and custom functions can be written for both of these processes. In addition, quadtrees can be created using other quadtrees as “templates”, so that the new quadtree's structure is identical to the template quadtree. The package also includes functionality for modifying quadtrees, querying values, saving quadtrees to a file, and calculating least-cost paths using the quadtree as a resistance surface.
Maintained by Derek Friend. Last updated 2 years ago.
19 stars 6.34 score 58 scripts
wjschne
ggdiagram:Object-Oriented Diagram Plots with ggplot2
The ggdiagram package creates path diagrams with an object-oriented approach and plots diagrams with ggplot2.
Maintained by W. Joel Schneider. Last updated 5 days ago.
diagramsfactor-analysisggplot2path-analysiss7structural-equation-modeling
32 stars 5.43 score
swarm-lab
trackdf:Data Frame Class for Tracking Data
Data frame class for storing collective movement data (e.g. fish schools, ungulate herds, baboon troops) collected from GPS trackers or computer vision tracking software.
Maintained by Simon Garnier. Last updated 2 years ago.
animal-behavioranimal-behaviourgpsgps-data
4 stars 5.42 score 11 scripts 1 dependents
goldingn
pop:A Flexible Syntax for Population Dynamic Modelling
Population dynamic models underpin a range of analyses and applications in ecology and epidemiology. The various approaches for analysing population dynamics models (MPMs, IPMs, ODEs, POMPs, PVA) each require the model to be defined in a different way. This makes it difficult to combine different modelling approaches and data types to solve a given problem. 'pop' aims to provide a flexible and easy to use common interface for constructing population dynamic models and enabling to them to be fitted and analysed in lots of different ways.
Maintained by Nick Golding. Last updated 9 years ago.
10 stars 4.88 score 15 scripts
davidcsterratt
retistruct:Retinal Reconstruction Program
Reconstructs retinae by morphing a flat surface with cuts (a dissected flat-mount retina) onto a curvilinear surface (the standard retinal shape). It can estimate the position of a point on the intact adult retina to within 8 degrees of arc (3.6% of nasotemporal axis). The coordinates in reconstructed retinae can be transformed to visuotopic coordinates. For more details see Sterratt, D. C., Lyngholm, D., Willshaw, D. J. and Thompson, I. D. (2013) <doi:10.1371/journal.pcbi.1002921>.
Maintained by David C. Sterratt. Last updated 2 hours ago.
8 stars 4.75 score
alfrzlp
sae.projection:Small Area Estimation Using Model-Assisted Projection Method
Combines information from two independent surveys using a model-assisted projection method. Designed for survey sampling scenarios where a large sample collects only auxiliary information (Survey 1) and a smaller sample provides data on both variables of interest and auxiliary variables (Survey 2). Implements a working model to generate synthetic values of the variable of interest by fitting the model to Survey 2 data and predicting values for Survey 1 based on its auxiliary variables (Kim & Rao, 2012) <doi:10.1093/biomet/asr063>.
Maintained by Ridson Al Farizal P. Last updated 1 months ago.
3.30 score 7 scripts
calbertsen
otoclass:Otolith Classification and Proportion Estimation
Methods for classification and analysis of otoliths along with methods for estimating species proportions in samples.
Maintained by Christoffer Moesgaard Albertsen. Last updated 11 months ago.
contour-detectionotolith-classificationotolith-shapeotolithscpp
3 stars 2.18 score
haeran-cho
tilting:Variable Selection via Tilted Correlation Screening Algorithm
Implements an algorithm for variable selection in high-dimensional linear regression using the "tilted correlation", a new way of measuring the contribution of each variable to the response which takes into account high correlations among the variables in a data-driven way.
Maintained by Haeran Cho. Last updated 8 years ago.
1.00 score 7 scripts
cran
TwoArmSurvSim:Simulate Survival Data for Randomized Clinical Trials
A system to simulate clinical trials with time to event endpoints. Event simulation is based on Cox models allowing for covariates in addition to the treatment or group factor. Specific drop-out rates (separate from administrative censoring) can be controlled in the simulation. Other features include stratified randomization, non-proportional hazards, different accrual patterns, and event projection (timing to reach the target event) based on interim data.
Maintained by Bo Zhang. Last updated 4 years ago.
1.00 score