xfer_userExtent: user provided extent of transfer

This function generates an area of transfer according to a user provided polygon and buffer.

Usage

xfer_userExtent(bgShp_path, bgShp_name, userBgBuf, logger = NULL, spN = NULL)

Arguments

bgShp_path: path to the user provided shapefile or csv with vertex coordinates.
bgShp_name: name of the user provided shapefile or csv with vertex coordinates.
userBgBuf: numeric. Buffer to be used in creating the background extent must be >= 0.
logger: Stores all notification messages to be displayed in the Log Window of Wallace GUI. Insert the logger reactive list here for running in shiny, otherwise leave the default NULL.
spN: data frame of cleaned occurrences obtained from component occs: Obtain occurrence data. Used to obtain species name for logger messages.

Value

This function returns a SpatialPolygons object with the user provided shape (+ a buffer is userBgBuf >0).

Details

This function is used in the transfer component. Here, the user provides either a shapefile or a csv with vertex coordinates with the desired shape for the extent of transfer, the user may include a buffer to the given polygon. The function returns a SpatialPolygons object of the desired extent (+ buffer).

Author

Jamie Kass <jamie.m.kass@gmail.com>

Gonzalo E. Pinilla-Buitrago <gepinillab@gmail.com>

Andrea Paz <paz.andreita@gmail.com>

Bethany A. Johnson <bjohnso005@citymail.cuny.edu>

Examples

pathShp <- list.files(system.file("extdata/shp", package = "wallace"),
                      full.names = TRUE)
nameShp <- list.files(system.file("extdata/shp", package = "wallace"),
                      full.names = FALSE)
xferUser <- xfer_userExtent(bgShp_path = pathShp, bgShp_name = nameShp,
                            userBgBuf = 1)
#> Reading layer `Bassaricyon_neblina' from data source 
#>   `/home/runner/work/_temp/Library/wallace/extdata/shp/Bassaricyon_neblina.shp' 
#>   using driver `ESRI Shapefile'
#> Simple feature collection with 1 feature and 1 field
#> Geometry type: POLYGON
#> Dimension:     XY
#> Bounding box:  xmin: -79.47486 ymin: -1.15418 xmax: -74.50839 ymax: 6.83333
#> CRS:           NA
#> Transferring extent user-defined polygon buffered by 1 degrees.