# pgirmess v1.6.9

Monthly downloads

## Spatial Analysis and Data Mining for Field Ecologists

Set of tools for reading, writing and transforming spatial and seasonal data in ecology, model selection and specific statistical tests. It includes functions to discretize polylines into regular point intervals, link observations to those points, compute geographical coordinates at regular intervals between waypoints, read subsets of big rasters, compute zonal statistics or table of categories within polygons or circular buffers from raster. The package also provides miscellaneous functions for model selection, spatial statistics, geometries, writing data.frame with Chinese characters, and some other functions for field ecologists.

## Functions in pgirmess

Name | Description | |

Segments | Draw line segments between pairs of points. | |

dirSeg | Computes segment directions. | |

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

dirProj | Computes new coordinates given bearings and distances. | |

piankabio | Computes the Pianka's index of niche overlap | |

distNNeigh | Computes distances to the nearest neighbour | |

distSeg | Computes distances between the top coordinates of segments. | |

pave | Provide square polygons or their node coordinates along a segment | |

print.mc | print method for objects of class 'mc' | |

piankabioboot | Bootstrap Pianka's index | |

gps2gpx | Download waypoints or tracks from a GPS to a gpx file | |

readGDALbbox | Read a raster using rgdal within a user specified bounding box | |

postxt | Computes coordinates defined from their relative position on x and y in the plotting region | |

kruskalmc | Multiple comparison test after Kruskal-Wallis | |

polycirc | Computes the polygon coordinates of a circle | |

date2winter | Convert a POSIXt date into categories corresponding to a autumn/winter/spring sequence | |

diag2edge | Computes the edge of a square from its diagonal | |

pclig | Compute the percentage of each cell of a matrix or data.frame by row | |

permcont | Random permutation of a contingency table n row x 2 columns | |

shannonbioboot | Boostrap Shannon's and equitability indices | |

siegelp179 | Data on rats training | |

rwhatbufCat2 | Extract the contents of a raster file of categorical values within various buffer sizes centred on spatial points | |

rwhatbufCat | Extract the contents of a SpatialPixelsDataFrame or a SpatialGridDataFrame of categorical values within various buffer sizes centred on spatial points | |

distTot | Computes the total length of a polyline. | |

writecn.delim | Write a data.frame that has Chinese characters | |

tabcont2categ | Convert a contingency table (data.frame) into a presence/absence table of categories | |

expandpoly | Homothetia (size expansion) of a polygon | |

writePRJ | Write the projection file of a shapefile from a spatial object | |

polycirc2 | Computes the polygon coordinates of a circle sector | |

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

rwhatbufNum | Extract the contents of a SpatialPixelsDataFrame or a SpatialGridDataFrame of numerical values within various buffer sizes centred on spatial points | |

ks.gof | Kolmogorof-Smirnov goodness of fit test to normal distribution | |

preybiom | Jackal and Genet diet in Algeria | |

selMod | Model selection according to information theoretic methods | |

valchisq | Values of the partial chi-square in each cell of a contingency table | |

val4symb | Center a numerical vector on a parameter position and provides absolute values and colors according to negative and positive values | |

shannon | Computes Shannon's and equitability indices | |

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

mergeTrackObs | Merge two SpatialPoints or SpatialPointsDataFrame objects, one modelling a track, the other observations | |

readVista | Download waypoints and tracks from a GPS | |

rmls | Select objects in the parent frame and remove them. | |

transLines2pix | Convert a SpatialLines or a SpatialLinesDataFrame object into SpatialPointsDataFrame with spatial points at regular distance along the lines | |

trans2pix | Convert a transect coordinate file with some waypoints separated by NA into a matrix with intermediate coordinates replacing NA. | |

write.delim | Write a data.frame | |

writeGPX | Convert a data frame into a GPX file of waypoints or track | |

uploadGPS | Upload waypoints to Garmin GPS | |

trans2seg | Convert a transect coordinate file into a matrix with segment coordinates. | |

QGIS2sp | Changes a copied-to-clipboard QGIS attribute table into a sp Spatial object or a data.frame | |

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

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

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

friedmanmc | Multiple comparisons after Friedman test | |

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

distNode | Computes the distances between each nodes of a polyline. | |

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

CI | Confidence interval of percentages | |

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

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

No Results! |

## Last month downloads

## Details

Date | 2018-03-11 |

License | GPL (>= 2) |

URL | http://perso.orange.fr/giraudoux |

NeedsCompilation | no |

Packaged | 2018-03-12 02:59:59 UTC; pgiraudo2 |

Repository | CRAN |

Date/Publication | 2018-03-12 14:56:20 UTC |

imports | boot (>= 1.3-4) , maptools (>= 0.8-36) , rgdal (>= 0.7-8) , rgeos (>= 0.3-8) , sp (>= 0.9-97) , spdep (>= 0.5-43) , splancs (>= 2.01-31) |

suggests | MASS (>= 7.3-1) , nlme (>= 3.1-120) |

Contributors | Jean-Philippe Antonietti, Colin Beale, David Pleydell, Mike Treglia |

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