Landscape Metrics for Categorical Map Patterns

Calculates landscape metrics for categorical landscape patterns in a tidy workflow. 'landscapemetrics' reimplements the most common metrics from 'FRAGSTATS' (< https://www.umass.edu/landeco/research/fragstats/fragstats.html>) and new ones from the current literature on landscape metrics. This package supports 'raster' spatial objects and takes RasterLayer, RasterStacks, RasterBricks or lists of RasterLayer from the 'raster' package as input arguments. It further provides utility functions to visualize patches, select metrics and building blocks to develop new metrics.


News

landscapemetrics 1.1

  • Bugfixes
    • Bugfix in lsm_c_ai() if only one class and NA values were present
    • Bugfix in show_correlation() that first col was lost
    • Bugfix in sample_lsm() and extract_lsm() to forward arguments to calculate_lsm()
    • size argument in sample_lsm() is now comparable between squares and circles
    • Bugfix in window_lsm() that some arguments were not passed on (resolution and points)
    • Bugfix in extract_lsm() and window_lsm() that allowed metric subset was wrong
  • Improvements
    • The values can be added as geom_text in show_correlation()
    • list_lsm() allows to return all BUT the selected metrics
    • sample_lsm() can now use SpatialPolygons to sample metrics
    • sample_lsm() can now handle SpatialLines to sample metrics
    • sample_lsm() automatically detects provided data type
    • extract_lsm() can now handle SpatialLines to extract metrics
    • Updates the way of calculating lsm_l_ent() and thus lsm_l_condent() and lsm_l_mutinf().
    • calculate_lsm()/extract_lsm()/sample_lsm()/spatialize_lsm()/window_lsm() can print progress
    • replaced cat() with message()
    • calculate_lsm() returns an error message if selected metrics do not exist
    • construct_buffer() can now return a matrix with coords instead of polygons
    • calculate_lsm() checks the input data before calculating metrics
  • Renaming
    • get_lsm() is now called spatialize_lsm()

landscapemetrics 1.0

  • New functions
    • New function moving_window() to calculate metrics within a moving window
    • New function get_lsm() to raster in which each cell has patch metric value
  • Bugfixes
    • Bugfix in check_landscape() if NA values were present
    • Bugfix in pad_raster() that pad_raster_cells > 1 did not work
    • Bugfix in calculate_lsm() calculating class area where resolution was lost
  • Improvements
    • Removing all functions from dplyr
    • Better structure for helping functions of check_landscape()
    • Better handling of RasterStacks for check_landscape()
    • pad_raster() is now typestable and always returns a list
    • pad_raster() can now return also a RasterLayer (and not just a matrix as)

landscapemetrics 0.3.1

  • Bugfixes
    • fixing bug in sample_lsm() that occured when metrics where selected using what argument
    • Bugfix in lsm_p_core() if only one patch is present
    • Bugfix in lsm_p_circle() if only one cell is present in class
    • Bugfix in lsm_p_hyrate() if only one cell is present in class
    • Bugfix in get_adjacencies() that checks if neighbourhood was specified correctly did not work properly
  • Improvements
    • sample_lsm() now returns a tibble including an extra column if return_raster = TRUE (and not a nested tibble as before)
    • Better explanation on how to specify metrics for list_lsm(), calculate_lsm() and ``sample_lsm()`
  • Renaming
    • Renamed argument return_plots to return_raster in sample_lsm()

landscapemetrics 0.3

  • New functions
    • New function check_landscape to make sure your landscapes are feasible for landscapemetrics
    • New function raster_to_points() to get also NA cells (not possible with raster::rasterToPoints)
    • New function get_boundaries() to get only boundary cells
    • New function get_unique_values() that shows all uniques labels in a class
    • New function list_lsm() function to print available metrics
    • New function show_lsm() function to vizualize patch level metrics
  • Bugfixes
    • Bugfix in lsm_l_rpr: Typo in internal function, used landscapemetrics::landscape instead of user input
    • Bugfix in all show_() * functions that na.value color is identical
  • Improvements
    • Most get_-functions can now take matrix as input and also return a matrix
    • calculate_lsm() now uses list_lsm(). This allows more options to specify metrics to calculate
    • Updated structure of lsm_abbreviations_names
    • show_()-functions don't throw warnings
    • "global" facet for all show_() functions
    • extract_lsm() now uses list_lsm(). This allows more options to specify metrics to calculate
    • rcpp_get_coocurrence_matrix() can now handle large rasters and is faster
    • lsm_p_circle() and get_circumscribingcircle() now consideres different x- & y-resolutions
    • Generally, a better use of Rcpp to decrease computational time and memory demand
  • Renaming
    • Renamed "new metric" group to "complexity metric" group
    • what arguments of all show_()-functions now are named class for consistency (so all what arguments deal with metrics)
    • what arguments of get_patches() is now named class for consistency (so all what arguments deal with metrics)

landscapemetrics 0.2

  • Unified naming scheme for all auxiliary functions:
    • calculate_metrics is now calculate_lsm
  • Implemented show_cores, a function to plot the core area of patches
  • show_patches now also shows labelled class facets (option what)
  • All plot functions have the same theme
  • Implemented sample_lsm, a function to sample metrics around buffered points
  • Implemented extract_lsm, a function to extract landscape metrics for spatial coordinates
  • Removed all functions from the purrr package and replaced them by lapply
  • Removed all pipes
  • calculate_lsm has the option progress
  • consider_boundary is available for all core metrics
  • The edge_depth can be specified for all core metrics

landscapemetrics 0.1.1

  • Replaced isFALSE() with !isTRUE() to be compatibile to R (> 3.1)
  • Bugfix: lsm_p_core() and lsm_p_ncore() now takes landscape boundary into account
  • Added namespace prefix std::fmod() in get_adjacency.cpp

landscapemetrics 0.1.0

  • First submission to CRAN

Reference manual

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install.packages("landscapemetrics")

1.3 by Maximillian H.K. Hesselbarth, 13 days ago


https://r-spatialecology.github.io/landscapemetrics/


Report a bug at https://github.com/r-spatialecology/landscapemetrics/issues


Browse source code at https://github.com/cran/landscapemetrics


Authors: Maximillian H.K. Hesselbarth [aut, cre] , Marco Sciaini [aut] , Jakub Nowosad [aut] , Sebastian Hanss [aut] , Laura J. Graham [ctb] (Input on package structure) , Jeffrey Hollister [ctb] (Input on package structure) , Kimberly A. With [ctb] (Input on package structure) , Florian Privé [ctb] (Original author of underlying C++ code for get_nearestneighbour() function) , Jeremy VanDerWal [ctb] (Original author of underlying C code for get_patches() function) , Matt Strimas-Mackey [ctb] (Bugfix in sample_metrics())


Documentation:   PDF Manual  


Task views: Analysis of Spatial Data


GPL-3 license


Imports cli, ggplot2, methods, raster, Rcpp, sp, stats, tibble

Suggests covr, dplyr, knitr, rgeos, rmarkdown, testthat

Enhances stars, sf

Linking to Rcpp, RcppArmadillo

System requirements: C++11


See at CRAN