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pgirmess (version 2.0.2)

Spatial Analysis and Data Mining for Field Ecologists

Description

Set of tools for reading, writing and transforming spatial and seasonal data, model selection and specific statistical tests for ecologists. It includes functions to interpolate regular positions of points between landmarks, to discretize polylines into regular point positions, link distant observations to points and convert a bounding box in a spatial object. It also provides miscellaneous functions for field ecologists such as spatial statistics and inference on diversity indexes, writing data.frame with Chinese characters.

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Install

install.packages('pgirmess')

Monthly Downloads

4,028

Version

2.0.2

License

GPL (>= 2)

Issues

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Repository

https://github.com/pgiraudoux/pgirmess

Homepage

https://giraudoux.pagesperso-orange.fr

Maintainer

Patrick Giraudoux

Last Published

April 7th, 2023

Functions in pgirmess (2.0.2)

Computes the distance between the centroid and the most distant coordinate of a geographical coordinate set

Computes the total length of a polyline.

Computes segment directions.

Multiple comparison test after Kruskal-Wallis

Gives an index vector of the class category of each value of a numerical vector

Permutation test for lm, lme and glm (binomial and Poisson) objects

Computes the distances between each nodes of a polyline.

Kolmogorof-Smirnov goodness of fit test to normal distribution

Computes distances to the nearest neighbour

Computes distances between the top coordinates of segments.

Multiple comparisons after Friedman test

Computes the polygon coordinates of a circle

Homothetia (size expansion) of a polygon

Computes Shannon's and equitability indices

Convert a contingency table (data.frame) into a presence/absence table of categories

Count the nearest observations to points corresponding to track intervals

Empirical confidence interval of the bootstrap of the difference between two Shannon indices

Convert a transect coordinate file with some waypoints separated by NA into a matrix with intermediate coordinates replacing NA.

Computes new coordinates given bearings and distances.

Bootstrap Pianka's index

Computes the Pianka's index of niche overlap

Produces a matrix of scatterplot, regression coefficient and p(Ho)

Computes Shannon's and equitability indices from a data frame of dietary analysis (n, biomass,...)

Model selection according to information theoretic methods

Random permutation of a contingency table n row x 2 columns

Boostrap Shannon's and equitability indices

Computes the polygon coordinates of a circle sector

Provide square polygons or their node coordinates along a segment

Center a numerical vector on a parameter position and provides absolute values and colors according to negative and positive values

Write a data.frame

Jackal and Genet diet in Algeria

Data on rats training

Convert a transect coordinate file into a matrix with segment coordinates.

Thin a track just keeping the points separated by a user defined minimal distance

Convert MULTILINESTRING and/or LINESTRING into POINT geometry with points at regular distance between nodes

Write a data.frame that has Chinese characters

print method for objects of class 'mc'

Convert a bounding box into a sf object.

Convert a POSIXt date into categories corresponding to a autumn/winter/spring sequence

Draw line segments between pairs of points.

Computes Moran's or Geary's coefficients on distance classes

Gives a correlation matrix and the probability of Ho for each correlation

Computes the edge of a square from its diagonal

Simplify the list of a TukeyHSD object keeping the significant differences only.

Confidence interval of percentages