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if ( !isGeneric('mapView') ) {
setGeneric('mapView', function(x, ...)
standardGeneric('mapView'))
}
#' View spatial objects interactively
#'
#' @description
#' this function produces an interactive view of the specified
#' spatial object(s) on top of the specified base maps.
#'
#' @details
#' If \code{zcol} is not \code{NULL} but a length one character vector
#' (referring to a column name of the attribute table)
#' and \code{burst} is \code{TRUE}, one layer for each unique value
#' of \code{zcol} will be drawn. The same will happen if \code{burst} is
#' a length one character vector (again referring to a column of
#' the attribute table). \cr
#' \cr
#' NOTE: if XYZ or XYM or XYZM data from package sf is passed to mapview,
#' dimensions Z and M will be stripped to ensure smooth rendering even though
#' the popup will potentially still say something like "POLYGON Z".
#'
#' @param x a \code{Raster*} or \code{Spatial*} or \code{Satellite} or
#' \code{sf} object or a list of any combination of those. Furthermore,
#' this can also be a \code{data.frame}, a \code{numeric vector} or a
#' \code{character string} pointing to a tile image folder or file on disk.
#' If missing, a blank map will be drawn.
#' @param map an optional existing map to be updated/added to.
#' @param band for stars layers, the band number to be plotted.
#' @param pane name of the map pane in which to render features. See
#' \code{\link{addMapPane}} for details. Currently only supported for vector layers.
#' Ignored if \code{canvas = TRUE}. The default \code{"auto"} will create different panes
#' for points, lines and polygons such that points overlay lines overlay polygons.
#' Set to \code{NULL} to get default leaflet behaviour where allfeatures
#' are rendered in the same pane and layer order is determined automatically/sequentially.
#' @param canvas whether to use canvas rendering rather than svg. May help
#' performance with larger data. See \url{http://leafletjs.com/reference-1.3.0.html#canvas}
#' for more information. Only applicable for vector data. The default setting will
#' decide automatically, based on feature complexity.
#' @param viewer.suppress whether to render the map in the browser (\code{TRUE})
#' or the RStudio viewer (\code{FALSE}). When not using RStudio, maps will open
#' in the browser by default. This is passed to \link[htmlwidgets]{sizingPolicy}
#' via \link[leaflet]{leafletSizingPolicy}. For raster data the default is \code{FALSE}.
#' For vector data it depends on argument \code{canvas}.
#' @param maxpixels integer > 0. Maximum number of cells to use for the plot.
#' If maxpixels < \code{ncell(x)}, sampleRegular is used before plotting.
#' @param color color (palette) for points/polygons/lines
#' @param col.regions color (palette) pixels.
#' See \code{\link{levelplot}} for details.
#' @param at the breakpoints used for the visualisation.
#' See \code{\link{levelplot}} for details.
#' @param na.color color for missing values
#' @param use.layer.names should layer names of the Raster* object be used?
#' @param map.types character spcifications for the base maps.
#' see \url{http://leaflet-extras.github.io/leaflet-providers/preview/}
#' for available options.
#' @param burst whether to show all (TRUE) or only one (FALSE) layer(s).
#' See also Details.
#' @param zcol attribute name(s) or column number(s) in attribute table
#' of the column(s) to be rendered. See also Details.
#' @param cex attribute name(s) or column number(s) in attribute table
#' of the column(s) to be used for defining the size of circles
#' @param lwd line width
#' @param alpha opacity of lines
#' @param alpha.regions opacity of the fills of points, polygons or raster layer(s)
#' @param na.alpha opacity of missing values
#' @param legend should a legend be plotted
#' @param legend.opacity opacity of the legend
#' @param trim should the raster be trimmed in case there are NAs on the edges
#' @param verbose should some details be printed during the process
#' @param layer.name the name of the layer to be shown on the map
#' @param homebutton logical, whether to add a zoom-to-layer button to the map.
#' Defaults to TRUE
#' @param popup a \code{list} of HTML strings with the popup contents, usually
#' created from \code{\link[leafpop]{popupTable}}. See \code{\link{addControl}} for
#' details.
#' @param label For vector data (sf/sp) a character vector of labels to be
#' shown on mouseover. See \code{\link{addControl}} for details. For raster
#' data (Raster*/stars) a logical indicating whether to add image query.
#' @param native.crs logical whether to reproject to web map coordinate
#' reference system (web mercator - epsg:3857) or render using native CRS of
#' the supplied data (can also be NA). Default is FALSE which will render in
#' web mercator. If set to TRUE now background maps will be drawn (but rendering
#' may be much quicker as no reprojecting is necessary). Currently only works
#' for simple features.
#' @param method for raster data only (raster/stars). Method used to compute
#' values for the resampled layer that is passed on to leaflet. mapview does
#' projection on-the-fly to ensure correct display and therefore needs to know
#' how to do this projection. The default is 'bilinear' (bilinear interpolation),
#' which is appropriate for continuous variables. The other option, 'ngb'
#' (nearest neighbor), is useful for categorical variables. Ignored if the raster
#' layer is of class \code{factor} in which case "ngb" is used.
#' @param highlight either \code{FALSE}, \code{NULL} or a list of styling
#' options for feature highlighting on mouse hover.
#' See \code{\link{highlightOptions}} for details.
#' @param maxpoints the maximum number of points making up the geometry.
#' In case of lines and polygons this refers to the number of vertices. See
#' Details for more information.
#' @param query.type for raster methods only. Whether to show raster value query
#' on \code{'mousemove'} or \code{'click'}. Ignored if \code{label = FALSE}.
#' @param query.digits for raster methods only. The amount of digits to be shown
#' by raster value query. Ignored if \code{label = FALSE}.
#' @param query.position for raster methods only. The position of the raster
#' value query info box. See \code{position} argument of \code{\link{addLegend}}
#' for possible values. Ignored if \code{label = FALSE}.
#' @param query.prefix for raster methods only. a character string to be shown
#' as prefix for the layerId. Ignored if \code{label = FALSE}.
#' @param ... additional arguments passed on to respective functions.
#' See \code{\link{addRasterImage}}, \code{\link{addCircles}},
#' \code{\link{addPolygons}}, \code{\link{addPolylines}} for details
#'
#' @details
#' \code{maxpoints} is taken to determine when to switch rendering from svg
#' to canvas overlay for perfomance. The threshold calculation is done as follows: \cr
#' if the number of points (in case of point data) or vertices (in case of
#' polygon or line data) > \code{maxpoints} then render using special render
#' function. Within this render function we approximate the complexity of
#' features by \cr
#' \cr
#' \code{maxFeatures <- maxfeatures / (npts(data) / length(data))} \cr
#' \cr
#' where \code{npts} determines the number of points/vertices and \code{length}
#' the number of features (points, lines or polygons). When the number of
#' features in the current view window is larger than \code{maxFeatures} then
#' features are rendered on the canvas, otherwise they are rendered as svg objects
#' and fully queriable.
#'
#' @author
#' Tim Appelhans
#'
#' @examples
#' \dontrun{
#' mapview()
#'
#' ## simple features ====================================================
#' library(sf)
#'
#' # sf
#' mapview(breweries)
#' mapview(franconia)
#'
#' # sfc
#' mapview(st_geometry(breweries)) # no popup
#'
#' # sfg / XY - taken from ?sf::st_point
#' outer = matrix(c(0,0,10,0,10,10,0,10,0,0),ncol=2, byrow=TRUE)
#' hole1 = matrix(c(1,1,1,2,2,2,2,1,1,1),ncol=2, byrow=TRUE)
#' hole2 = matrix(c(5,5,5,6,6,6,6,5,5,5),ncol=2, byrow=TRUE)
#' pts = list(outer, hole1, hole2)
#' (pl1 = st_polygon(pts))
#' mapview(pl1)
#'
#' ## raster ==============================================================
#' if (interactive()) {
#' library(plainview)
#'
#' mapview(plainview::poppendorf[[5]])
#' }
#'
#' ## spatial objects =====================================================
#' mapview(leaflet::gadmCHE)
#' mapview(leaflet::atlStorms2005)
#'
#'
#' ## styling options & legends ===========================================
#' mapview(franconia, color = "white", col.regions = "red")
#' mapview(franconia, color = "magenta", col.regions = "white")
#'
#' mapview(breweries, zcol = "founded")
#' mapview(breweries, zcol = "founded", at = seq(1400, 2200, 200), legend = TRUE)
#' mapview(franconia, zcol = "district", legend = TRUE)
#'
#' clrs <- sf.colors
#' mapview(franconia, zcol = "district", col.regions = clrs, legend = TRUE)
#'
#' ### multiple layers ====================================================
#' mapview(franconia) + breweries
#' mapview(list(breweries, franconia))
#' mapview(franconia) + mapview(breweries) + trails
#'
#' mapview(franconia, zcol = "district") + mapview(breweries, zcol = "village")
#' mapview(list(franconia, breweries),
#' zcol = list("district", NULL),
#' legend = list(TRUE, FALSE))
#'
#'
#' ### burst ==============================================================
#' mapview(franconia, burst = TRUE)
#' mapview(franconia, burst = TRUE, hide = TRUE)
#' mapview(franconia, zcol = "district", burst = TRUE)
#'
#'
#' ### ceci constitue la fin du pipe ======================================
#' library(dplyr)
#' library(sf)
#'
#' franconia %>%
#' sf::st_union() %>%
#' mapview()
#'
#' franconia %>%
#' group_by(district) %>%
#' summarize() %>%
#' mapview(zcol = "district")
#'
#' franconia %>%
#' group_by(district) %>%
#' summarize() %>%
#' mutate(area = st_area(.) / 1e6) %>%
#' mapview(zcol = "area")
#'
#' franconia %>%
#' mutate(area = sf::st_area(.)) %>%
#' mapview(zcol = "area", legend = TRUE)
#'
#' breweries %>%
#' st_intersection(franconia) %>%
#' mapview(zcol = "district")
#'
#' franconia %>%
#' mutate(count = lengths(st_contains(., breweries))) %>%
#' mapview(zcol = "count")
#'
#' franconia %>%
#' mutate(count = lengths(st_contains(., breweries)),
#' density = count / st_area(.)) %>%
#' mapview(zcol = "density")
#' }
#'
#' @export
#' @docType methods
#' @name mapView
#' @rdname mapView
#' @aliases mapView,RasterLayer-method
######## RASTER ###########################################################
## RasterLayer ============================================================
setMethod('mapView', signature(x = 'RasterLayer'),
function(x,
map = NULL,
maxpixels = mapviewGetOption("mapview.maxpixels"),
col.regions = mapviewGetOption("raster.palette")(256),
at = NULL,
na.color = mapviewGetOption("na.color"),
use.layer.names = mapviewGetOption("use.layer.names"),
map.types = mapviewGetOption("basemaps"),
alpha.regions = 0.8,
legend = mapviewGetOption("legend"),
legend.opacity = 1,
trim = mapviewGetOption("trim"),
verbose = mapviewGetOption("verbose"),
layer.name = NULL,
homebutton = mapviewGetOption("homebutton"),
native.crs = mapviewGetOption("native.crs"),
method = mapviewGetOption("method"),
label = TRUE,
query.type = mapviewGetOption("query.type"),
query.digits = mapviewGetOption("query.digits"),
query.position = mapviewGetOption("query.position"),
query.prefix = mapviewGetOption("query.prefix"),
viewer.suppress = mapviewGetOption("viewer.suppress"),
...) {
if (is.null(at)) at <- lattice::do.breaks(
extendLimits(range(x[], na.rm = TRUE)), 256)
if (mapviewGetOption("platform") == "leaflet") {
# if (maxpixels < raster::ncell(x)) {
# plainview(x,
# maxpixels = maxpixels,
# col.regions = col.regions,
# at = at,
# na.color = na.color,
# verbose = verbose,
# layer.name = layer.name,
# ...)
# } else {
leafletRL(x,
map = map,
maxpixels = maxpixels,
col.regions = col.regions,
at = at,
na.color = na.color,
use.layer.names = use.layer.names,
map.types = map.types,
alpha.regions = alpha.regions,
legend = legend,
legend.opacity = legend.opacity,
trim = trim,
verbose = verbose,
layer.name = layer.name,
homebutton = homebutton,
native.crs = native.crs,
method = method,
label = label,
query.type = query.type,
query.digits = query.digits,
query.position = query.position,
query.prefix = query.prefix,
viewer.suppress = viewer.suppress,
...)
} else {
NULL
}
}
)
## Stars layer ==================================================================
#' @describeIn mapView \code{\link{stars}}
setMethod('mapView', signature(x = 'stars'),
function(x,
band = 1,
map = NULL,
maxpixels = mapviewGetOption("mapview.maxpixels"),
col.regions = mapviewGetOption("raster.palette")(256),
at = NULL,
na.color = mapviewGetOption("na.color"),
use.layer.names = mapviewGetOption("use.layer.names"),
map.types = mapviewGetOption("basemaps"),
alpha.regions = 0.8,
legend = mapviewGetOption("legend"),
legend.opacity = 1,
trim = mapviewGetOption("trim"),
verbose = mapviewGetOption("verbose"),
layer.name = NULL,
homebutton = mapviewGetOption("homebutton"),
native.crs = mapviewGetOption("native.crs"),
method = mapviewGetOption("method"),
label = TRUE,
query.type = mapviewGetOption("query.type"),
query.digits = mapviewGetOption("query.digits"),
query.position = mapviewGetOption("query.position"),
query.prefix = mapviewGetOption("query.prefix"),
viewer.suppress = mapviewGetOption("viewer.suppress"),
...) {
# method = match.arg(method)
if(length(dim(x)) == 2) layer = x[[1]] else layer = x[[1]][, , band]
if (is.null(at)) at <- lattice::do.breaks(
extendLimits(range(layer, na.rm = TRUE)),
256
)
if (mapviewGetOption("platform") == "leaflet") {
leaflet_stars(x,
band = band,
map = map,
maxpixels = maxpixels,
col.regions = col.regions,
at = at,
na.color = na.color,
use.layer.names = use.layer.names,
map.types = map.types,
alpha.regions = alpha.regions,
legend = legend,
legend.opacity = legend.opacity,
trim = trim,
verbose = verbose,
layer.name = layer.name,
homebutton = homebutton,
native.crs = native.crs,
method = method,
label = label,
query.type = query.type,
query.digits = query.digits,
query.position = query.position,
query.prefix = query.prefix,
viewer.suppress = viewer.suppress,
...)
} else {
NULL
}
}
)
## Raster Stack/Brick ===========================================================
#' @describeIn mapView \code{\link{stack}} / \code{\link{brick}}
setMethod('mapView', signature(x = 'RasterStackBrick'),
function(x,
map = NULL,
maxpixels = mapviewGetOption("mapview.maxpixels"),
col.regions = mapviewGetOption("raster.palette")(256),
at = NULL,
na.color = mapviewGetOption("na.color"),
use.layer.names = TRUE,
map.types = mapviewGetOption("basemaps"),
legend = mapviewGetOption("legend"),
legend.opacity = 1,
trim = TRUE,
verbose = mapviewGetOption("verbose"),
homebutton = TRUE,
method = mapviewGetOption("method"),
label = TRUE,
query.type = c("mousemove", "click"),
query.digits,
query.position = "topright",
query.prefix = "Layer",
viewer.suppress = FALSE,
...) {
if (mapviewGetOption("platform") == "leaflet") {
leafletRSB(x,
map = map,
maxpixels = maxpixels,
col.regions = col.regions,
at = at,
na.color = na.color,
use.layer.names = use.layer.names,
map.types = map.types,
legend = legend,
legend.opacity = legend.opacity,
trim = trim,
verbose = verbose,
homebutton = homebutton,
method = method,
label = label,
query.type = query.type,
query.digits = query.digits,
query.position = query.position,
query.prefix = query.prefix,
viewer.suppress = viewer.suppress,
...)
} else {
NULL
}
}
)
## Satellite object =======================================================
#' @describeIn mapView \code{\link{satellite}}
setMethod('mapView', signature(x = 'Satellite'),
function(x,
map = NULL,
maxpixels = mapviewGetOption("mapview.maxpixels"),
col.regions = mapviewGetOption("raster.palette")(256),
at = NULL,
na.color = mapviewGetOption("na.color"),
map.types = mapviewGetOption("basemaps"),
legend = mapviewGetOption("legend"),
legend.opacity = 1,
trim = TRUE,
verbose = mapviewGetOption("verbose"),
homebutton = TRUE,
method = c("bilinear", "ngb"),
label = TRUE,
...) {
if (mapviewGetOption("platform") == "leaflet") {
leafletSatellite(x,
map = map,
maxpixels = maxpixels,
col.regions = col.regions,
at = at,
na.color = na.color,
map.types = map.types,
legend = legend,
legend.opacity = legend.opacity,
trim = trim,
verbose = verbose,
homebutton = homebutton,
method = method,
label = label,
...)
} else {
NULL
}
}
)
######## SIMPLE FEATURES ##################################################
## sf =====================================================================
#' @describeIn mapView \code{\link{st_sf}}
setMethod('mapView', signature(x = 'sf'),
function(x,
map = NULL,
pane = "auto",
canvas = useCanvas(x),
viewer.suppress = canvas,
zcol = NULL,
burst = FALSE,
color = mapviewGetOption("vector.palette"),
col.regions = mapviewGetOption("vector.palette"),
at = NULL,
na.color = mapviewGetOption("na.color"),
cex = 6,
lwd = lineWidth(x),
alpha = 0.9,
alpha.regions = regionOpacity(x),
na.alpha = regionOpacity(x),
map.types = NULL,
verbose = mapviewGetOption("verbose"),
popup = leafpop::popupTable(x),
layer.name = NULL,
label = makeLabels(x, zcol),
legend = mapviewGetOption("legend"),
legend.opacity = 1,
homebutton = TRUE,
native.crs = FALSE,
highlight = mapviewHighlightOptions(x, alpha.regions, alpha, lwd),
maxpoints = getMaxFeatures(x),
...) {
if (nrow(x) == 0) {
stop("\n", deparse(substitute(x, env = parent.frame())),
" does not contain data \n", call. = FALSE)
}
if (is.null(zcol) & is.null(legend)) legend = FALSE
if (!is.null(zcol) && !all(zcol %in% colnames(x))) {
stop("\n", "at least one of the following columns: \n",
paste(zcol, collapse = ", "), "\nnot found in ",
deparse(substitute(x, env = parent.frame())),
call. = FALSE)
}
if (mapviewGetOption("platform") == "leaflet") {
if (is.character(burst)) {
zcol = burst
burst = TRUE
}
if (length(zcol) > 1) {
x = x[, zcol]
burst = TRUE
}
# if (inherits(sf::st_geometry(x), "sfc_GEOMETRY")) {
# x = split(x, f = sf::st_dimension(sf::st_geometry(x)))
# }
if (burst) {
tmp <- burst(x = x,
zcol = zcol,
burst = burst,
color = color,
col.regions = col.regions,
at = at,
na.color = na.color,
popup = popup,
alpha = alpha,
alpha.regions = alpha.regions,
na.alpha = na.alpha,
legend = legend)
lwd = lwd
if (is.function(tmp)) {
tmp = tmp()
x <- tmp$obj
color <- tmp$color
col.regions <- tmp$col.regions
popup <- tmp$popup
label <- tmp$labs
# alpha = tmp$alpha
# alpha.regions = tmp$alpha.regions
zcol = tmp$zcol #as.list(names(x))
}
}
if (!inherits(x, "list")) {
leaflet_sf(sf::st_cast(x),
map = map,
pane = pane,
zcol = zcol,
color = color,
col.regions = col.regions,
at = at,
na.color = na.color,
cex = cex,
lwd = lwd,
alpha = alpha,
alpha.regions = alpha.regions,
na.alpha = na.alpha,
map.types = map.types,
verbose = verbose,
popup = popup,
layer.name = layer.name,
label = label,
legend = legend,
legend.opacity = legend.opacity,
homebutton = homebutton,
native.crs = native.crs,
highlight = highlight,
maxpoints = maxpoints,
canvas = canvas,
viewer.suppress = viewer.suppress,
...)
} else {
mapView(x,
zcol = zcol,
burst = FALSE,
color = color,
col.regions = col.regions,
popup = popup,
label = label,
homebutton = homebutton,
legend = legend,
map.types = map.types,
layer.name = layer.name,
alpha = alpha,
alpha.regions = alpha.regions,
na.alpha = na.alpha,
canvas = canvas,
viewer.suppress = viewer.suppress,
pane = pane,
cex = cex,
lwd = lwd,
...)
}
} else if (mapviewGetOption("platform") == "mapdeck") {
mapdeck_sf(x,
map = map,
zcol = zcol,
color = color,
col.regions = col.regions,
at = at,
na.color = na.color,
cex = cex,
lwd = lwd,
alpha = alpha,
alpha.regions = alpha.regions,
na.alpha = na.alpha,
map.types = map.types,
verbose = verbose,
popup = popup,
layer.name = layer.name,
label = label,
legend = legend,
legend.opacity = legend.opacity,
homebutton = homebutton,
native.crs = native.crs,
highlight = highlight,
maxpoints = maxpoints,
viewer.suppress = viewer.suppress,
...)
} else {
NULL
}
}
)
## sfc ====================================================================
#' @describeIn mapView \code{\link{st_sfc}}
setMethod('mapView', signature(x = 'sfc'),
function(x,
map = NULL,
pane = "auto",
canvas = useCanvas(x),
viewer.suppress = canvas,
color = standardColor(x), #mapviewGetOption("vector.palette"),
col.regions = standardColRegions(x), #mapviewGetOption("vector.palette"),
at = NULL,
na.color = mapviewGetOption("na.color"),
cex = 6,
lwd = lineWidth(x),
alpha = 0.9,
alpha.regions = regionOpacity(x),
map.types = NULL,
verbose = mapviewGetOption("verbose"),
popup = NULL,
layer.name = deparse(substitute(x,
env = parent.frame())),
label = makeLabels(x),
legend = mapviewGetOption("legend"),
legend.opacity = 1,
homebutton = TRUE,
native.crs = FALSE,
highlight = mapviewHighlightOptions(x, alpha.regions, alpha, lwd),
maxpoints = getMaxFeatures(x),
...) {
if (length(x) == 0) {
stop("\n", deparse(substitute(x, env = parent.frame())),
" does not contain data \n", call. = FALSE)
}
if (mapviewGetOption("platform") == "leaflet") {
leaflet_sfc(sf::st_cast(x),
map = map,
pane = pane,
canvas = canvas,
viewer.suppress = viewer.suppress,
color = color,
col.regions = col.regions,
na.color = na.color,
cex = cex,
lwd = lwd,
alpha = alpha,
alpha.regions = alpha.regions,
map.types = map.types,
verbose = verbose,
popup = popup,
layer.name = layer.name,
label = label,
legend = legend,
legend.opacity = legend.opacity,
homebutton = homebutton,
native.crs = native.crs,
highlight = highlight,
maxpoints = maxpoints,
...)
} else if (mapviewGetOption("platform") == "mapdeck") {
mapdeck_sfc(sf::st_cast(x),
map = map,
pane = pane,
canvas = canvas,
viewer.suppress = viewer.suppress,
color = color,
col.regions = col.regions,
na.color = na.color,
cex = cex,
lwd = lwd,
alpha = alpha,
alpha.regions = alpha.regions,
map.types = map.types,
verbose = verbose,
popup = popup,
layer.name = layer.name,
label = label,
legend = legend,
legend.opacity = legend.opacity,
homebutton = homebutton,
native.crs = native.crs,
highlight = highlight,
maxpoints = maxpoints,
...)
} else {
NULL
}
}
)
## character ==============================================================
#' @param tms whether the tiles are served as TMS tiles.
#'
#' @describeIn mapView \code{\link{character}}
setMethod('mapView', signature(x = 'character'),
function(x,
map = NULL,
tms = TRUE,
color = standardColor(),
col.regions = standardColRegions(),
at = NULL,
na.color = mapviewGetOption("na.color"),
cex = 6,
lwd = 2,
alpha = 0.9,
alpha.regions = 0.6,
na.alpha = 0.6,
map.types = NULL,
verbose = FALSE,
layer.name = x,
homebutton = TRUE,
native.crs = FALSE,
canvas = FALSE,
viewer.suppress = FALSE,
...) {
if (mapviewGetOption("platform") == "leaflet") {
if (utils::file_test("-d", x)) {
leaflet_tiles(x = x,
map = map,
tms = tms,
map.types = map.types,
verbose = verbose,
layer.name = layer.name,
homebutton = homebutton,
native.crs = native.crs,
viewer.suppress = viewer.suppress,
...)
} else if (utils::file_test("-f", x)) {
layer.name = basename(tools::file_path_sans_ext(layer.name))
leaflet_file(x = x,
map = map,
color = color,
col.regions = col.regions,
at = at,
na.color = na.color,
cex = cex,
lwd = lwd,
alpha = alpha,
alpha.regions = alpha.regions,
na.alpha = na.alpha,
map.types = map.types,
verbose = verbose,
layer.name = layer.name,
homebutton = homebutton,
native.crs = native.crs,
canvas = canvas,
viewer.suppress = viewer.suppress,
...)
} else {
stop(sprintf("%s is not a directory!", layer.name),
call. = FALSE)
}
}
}
)
## numeric ================================================================
#' @describeIn mapView \code{\link{numeric}}
#' @param y numeric vector.
#' @param type whether to render the numeric vector \code{x} as a
#' point \code{"p"} or line \code{"l"} plot.
setMethod('mapView', signature(x = 'numeric'),
function(x, y, type = "p", grid = TRUE, label, ...) {
if (missing(label)) {
if (!missing(y)) {
labs = lapply(seq(length(x)), function(i) {
paste0("x : ", x[i], '<br>',
"y : ", y[i])
})
label = lapply(labs, htmltools::HTML)
} else {
labs = lapply(seq(length(x)), function(i) {
paste0("x : ", seq_along(x)[i], '<br>',
"y : ", x[i])
})
label = lapply(labs, htmltools::HTML)
}
}
if (type == "l") label = NULL
xyView(x = x,
y = y,
type = type,
grid = grid,
label = label,
...)
}
)
## data.frame =============================================================
#' @describeIn mapView \code{\link{data.frame}}
#' @param xcol the column to be mapped to the x-axis. Only relevant for the
#' data.frame method.
#' @param ycol the column to be mapped to the y-axis. Only relevant for the
#' data.frame method.
#' @param grid whether to plot a (scatter plot) xy-grid to aid interpretation
#' of the visualisation. Only relevant for the data.frame method.
#' @param aspect the ratio of x/y axis corrdinates to adjust the plotting
#' space to fit the screen. Only relevant for the data.frame method.
#' @param crs an optional crs specification for the provided data to enable
#' rendering on a basemap. See argument description in \code{\link{st_sf}}
#' for details.
setMethod('mapView', signature(x = 'data.frame'),
function(x,
xcol,
ycol,
grid = TRUE,
aspect = 1,
popup = leafpop::popupTable(x),
label,
crs = NA,
...) {
if (missing(xcol) | missing(ycol)) {
obj = deparse(substitute(x, env = parent.frame()))
msg = paste0("\noops! Arguments xcol and/or ycol are missing!\n",
"You probably expected ", obj,
" to be a spatial object. \nHowever it is of class ",
class(x), ". \nEither convert ", obj, " to a spatial object ",
"or provide xcol and ycol.")
stop(msg, call. = FALSE)
}
if (missing(label)) {
labs = lapply(seq(nrow(x)), function(i) {
paste0(xcol, " (x) : ", x[[xcol]][i], '<br>',
ycol, " (y) : ", x[[ycol]][i])
})
label = lapply(labs, htmltools::HTML)
}
xyView(x = xcol,
y = ycol,
data = x,
grid = grid,
aspect = aspect,
popup = popup,
label = label,
crs = crs,
...)
}
)
## XY =====================================================================
#' @describeIn mapView \code{\link{st_sfc}}
setMethod('mapView', signature(x = 'XY'),
function(x,
map = NULL,
pane = "auto",
canvas = useCanvas(x),
viewer.suppress = canvas,
color = standardColor(x), #mapviewGetOption("vector.palette"),
col.regions = standardColRegions(x), #mapviewGetOption("vector.palette"),
at = NULL,
na.color = mapviewGetOption("na.color"),
cex = 6,
lwd = lineWidth(x),
alpha = 0.9,
alpha.regions = regionOpacity(x),
map.types = NULL,
verbose = mapviewGetOption("verbose"),
popup = NULL,
layer.name = deparse(substitute(x,
env = parent.frame(1))),
label = makeLabels(x),
legend = mapviewGetOption("legend"),
legend.opacity = 1,
homebutton = TRUE,
native.crs = FALSE,
highlight = mapviewHighlightOptions(x, alpha.regions, alpha, lwd),
maxpoints = getMaxFeatures(x),
...) {
if (mapviewGetOption("platform") == "leaflet") {
x = sf::st_cast(sf::st_sfc(x))
leaflet_sfc(x,
map = map,
pane = pane,
canvas = canvas,
viewer.suppress = viewer.suppress,
color = color,
col.regions = col.regions,
na.color = na.color,
cex = cex,
lwd = lwd,
alpha = alpha,
alpha.regions = alpha.regions,
map.types = map.types,
verbose = verbose,
popup = popup,
layer.name = layer.name,
label = label,
legend = legend,
legend.opacity = legend.opacity,
homebutton = homebutton,
native.crs = native.crs,
highlight = highlight,
maxpoints = maxpoints,
...)
} else {
NULL
}
}
)
## XYZ ====================================================================
#' @describeIn mapView \code{\link{st_sfc}}
setMethod('mapView', signature(x = 'XYZ'),
function(x,
layer.name = deparse(substitute(x,
env = parent.frame(1))),
...) {
mapview(sf::st_zm(x), layer.name = layer.name, ...)
}
)
## XYM ====================================================================
#' @describeIn mapView \code{\link{st_sfc}}