RMAWGEN - Multi-Site Auto-Regressive Weather GENerator

S3 and S4 functions are implemented for spatial multi-site stochastic generation of daily time series of temperature and precipitation. These tools make use of Vector AutoRegressive models (VARs). The weather generator model is then saved as an object and is calibrated by daily instrumental "Gaussianized" time series through the 'vars' package tools. Once obtained this model, it can it can be used for weather generations and be adapted to work with several climatic monthly time series.

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5.39 score 4 stars 4 dependents 102 scripts 675 downloads

RGENERATEPREC - Tools to Generate Daily-Precipitation Time Series

The method 'generate()' is extended for spatial multi-site stochastic generation of daily precipitation. It generates precipitation occurrence in several sites using logit regression (Generalized Linear Models) and the approach by D.S. Wilks (1998) <doi:10.1016/S0022-1694(98)00186-3> .

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4.93 score 4 stars 43 scripts 202 downloads

geotopbricks - An R Plug-in for the Distributed Hydrological Model GEOtop

It analyzes raster maps and other information as input/output files from the Hydrological Distributed Model GEOtop. It contains functions and methods to import maps and other keywords from geotop.inpts file. Some examples with simulation cases of GEOtop 2.x/3.x are presented in the package. Any information about the GEOtop Distributed Hydrological Model can be found in the provided documentation.

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4.82 score 4 stars 109 scripts 232 downloads

RGENERATE - Tools to Generate Vector Time Series

A method 'generate()' is implemented in this package for the random generation of vector time series according to models obtained by 'RMAWGEN', 'vars' or other packages. This package was created to generalize the algorithms of the 'RMAWGEN' package for the analysis and generation of any environmental vector time series.

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4.35 score 1 stars 1 dependents 15 scripts 327 downloads

blockmatrix - Tools to Solve Algebraic Systems with Partitioned Matrices

Some elementary matrix algebra tools are implemented to manage block matrices or partitioned matrix, i.e. "matrix of matrices" (http://en.wikipedia.org/wiki/Block_matrix). The block matrix is here defined as a new S3 object. In this package, some methods for "matrix" object are rewritten for "blockmatrix" object. New methods are implemented. This package was created to solve equation systems with block matrices for the analysis of environmental vector time series . Bugs/comments/questions/collaboration of any kind are warmly welcomed.

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4.05 score 3 dependents 25 scripts 256 downloads

rasterList - A Raster Where Cells are Generic Objects

A S4 class has been created such that complex operations can be executed on each cell of a raster map. The raster of objects contains a raster map with the addition of a list of generic objects: one object for each raster cells. It allows to write few lines of R code for complex map algebra. Two environmental applications about frequency analysis of raster map of precipitation and creation of a raster map of soil water retention curves have been presented.

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climatehydrologyhydrology-statisticalhydrology-stormwater-analysis

3.36 score 1 stars 23 scripts 246 downloads

soilwater - Implementation of Parametric Formulas for Soil Water Retention or Conductivity Curve

It is a set of R implementations of parametric formulas of soil water retention or conductivity curve. At the moment, only Van Genuchten (for soil water retention curve) and Mualem (for hydraulic conductivity) were implemented. See reference (<http://en.wikipedia.org/wiki/ Water_retention_curve>).

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3.31 score 1 stars 41 scripts 248 downloads

lmomPi - (Precipitation) Frequency Analysis and Variability with L-Moments from 'lmom'

It is an extension of 'lmom' R package: 'pel...()','cdf...()',qua...()' function families are lumped and called from one function per each family respectively in order to create robust automatic tools to fit data with different probability distributions and then to estimate probability values and return periods. The implemented functions are able to manage time series with constant and/or missing values without stopping the execution with error messages. The package also contains tools to calculate several indices based on variability (e.g. 'SPI' , Standardized Precipitation Index, see <https://climatedataguide.ucar.edu/climate-data/standardized-precipitation-index-spi> and <http://spei.csic.es/>) for multiple time series or spatially gridded values.

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3.00 score 33 scripts 224 downloads

boussinesq - Analytic Solutions for (Ground-Water) Boussinesq Equation

A collection of R functions were implemented from published and available analytic solutions for the One-Dimensional Boussinesq Equation (ground-water). In particular, the function "beq.lin()" is the analytic solution of the linearized form of Boussinesq Equation between two different head-based boundary (Dirichlet) conditions; "beq.song" is the non-linear power-series analytic solution of the motion of a wetting front over a dry bedrock (Song at al, 2007, see complete reference on function documentation). Bugs/comments/questions/collaboration of any kind are warmly welcomed.

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2.70 score 4 scripts 277 downloads