├── .Rbuildignore
├── .github
├── .gitignore
└── workflows
│ └── R-CMD-check.yaml
├── .gitignore
├── .travis.yml
├── DESCRIPTION
├── LICENSE.md
├── NAMESPACE
├── R
├── basemap.R
├── chunkerize.R
├── codeinc.R
├── genmeths.R
├── legend.R
├── rleafmap-package.R
├── serial.R
├── splayer.R
├── toGeoJSON.R
├── toJS.R
├── ui.R
├── utilities.R
└── writemap.R
├── README.md
├── _data
├── _dataicons.js
├── _datalines.js
├── _datapoints.js
└── _datapolygons.js
├── _map.html
├── data
├── campsites.RData
├── hotels.RData
└── velov.RData
├── man
├── basemap.Rd
├── bmCredit.Rd
├── bmServer.Rd
├── bmSource.Rd
├── campsites.Rd
├── chunkerize.Rd
├── col2hexa.Rd
├── hotels.Rd
├── layerLegend.Rd
├── printspl.Rd
├── rleafmap.Rd
├── spLayer.Rd
├── spLayer.SpatialGridDataFrame.Rd
├── spLayer.SpatialLines.Rd
├── spLayer.SpatialPoints.Rd
├── spLayer.SpatialPolygons.Rd
├── spLayer.default.Rd
├── spLayerControl.Rd
├── summarymaplayer.Rd
├── toGeoJSON.Rd
├── toJS.Rd
├── ui.Rd
├── uiJS.Rd
├── velov.Rd
└── writeMap.Rd
└── rleafmap.Rproj
/.Rbuildignore:
--------------------------------------------------------------------------------
1 | ^.*\.Rproj$
2 | ^\.Rproj\.user$
3 | ignore
4 | ^\.travis\.yml$
5 | LICENSE.md
6 | ^\.github$
7 | _data
8 | _map.html
9 | cran-comments.md
10 | ^CRAN-SUBMISSION$
11 |
--------------------------------------------------------------------------------
/.github/.gitignore:
--------------------------------------------------------------------------------
1 | *.html
2 |
--------------------------------------------------------------------------------
/.github/workflows/R-CMD-check.yaml:
--------------------------------------------------------------------------------
1 | # Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
2 | # Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
3 | on:
4 | push:
5 | branches: [main, master]
6 | pull_request:
7 | branches: [main, master]
8 |
9 | name: R-CMD-check
10 |
11 | jobs:
12 | R-CMD-check:
13 | runs-on: ${{ matrix.config.os }}
14 |
15 | name: ${{ matrix.config.os }} (${{ matrix.config.r }})
16 |
17 | strategy:
18 | fail-fast: false
19 | matrix:
20 | config:
21 | - {os: macos-latest, r: 'release'}
22 | - {os: windows-latest, r: 'release'}
23 | - {os: ubuntu-latest, r: 'devel', http-user-agent: 'release'}
24 | - {os: ubuntu-latest, r: 'release'}
25 | - {os: ubuntu-latest, r: 'oldrel-1'}
26 |
27 | env:
28 | GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
29 | R_KEEP_PKG_SOURCE: yes
30 |
31 | steps:
32 | - uses: actions/checkout@v3
33 |
34 | - uses: r-lib/actions/setup-pandoc@v2
35 |
36 | - uses: r-lib/actions/setup-r@v2
37 | with:
38 | r-version: ${{ matrix.config.r }}
39 | http-user-agent: ${{ matrix.config.http-user-agent }}
40 | use-public-rspm: true
41 |
42 | - uses: r-lib/actions/setup-r-dependencies@v2
43 | with:
44 | extra-packages: any::rcmdcheck
45 | needs: check
46 |
47 | - uses: r-lib/actions/check-r-package@v2
48 | with:
49 | upload-snapshots: true
50 |
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | .Rproj.user
2 | .Rhistory
3 | .RData
4 | cran-comments.md
5 | CRAN-SUBMISSION
6 |
--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
1 | # http://docs.travis-ci.com/user/languages/r/
2 | language: r
3 |
4 | sudo: required
5 | warnings_are_errors: true
6 |
7 |
8 | env:
9 | global:
10 | - NOT_CRAN=true
11 |
12 | before_install: echo "options(repos = c(CRAN='http://cran.rstudio.com'))" > ~/.Rprofile
13 |
14 | r_binary_packages:
15 | - sp
16 |
--------------------------------------------------------------------------------
/DESCRIPTION:
--------------------------------------------------------------------------------
1 | Package: rleafmap
2 | Title: Interactive Maps with R and Leaflet
3 | Description: Display spatial data with interactive maps powered by the open-
4 | source JavaScript library 'Leaflet' (see ). Maps can be
5 | rendered in a web browser or displayed in the HTML viewer pane of 'RStudio'.
6 | This package is designed to be easy to use and can create complex maps with
7 | vector and raster data, web served map tiles and interface elements.
8 | Version: 0.2.1
9 | Author: Francois Keck
10 | Maintainer: Francois Keck
11 | Encoding: UTF-8
12 | Depends:
13 | R (>= 3.0.0)
14 | Imports:
15 | knitr (>= 1.5),
16 | sp,
17 | raster,
18 | methods,
19 | grDevices,
20 | graphics,
21 | utils
22 | License: GPL-3
23 | URL: http://www.francoiskeck.fr/rleafmap/, https://github.com/fkeck/rleafmap
24 | RoxygenNote: 7.2.1
25 |
--------------------------------------------------------------------------------
/LICENSE.md:
--------------------------------------------------------------------------------
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469 | sale, or importing the Program or any portion of it.
470 |
471 | 11. Patents.
472 |
473 | A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based. The
475 | work thus licensed is called the contributor's "contributor version".
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535 |
536 | Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
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548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
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551 |
552 | 13. Use with the GNU Affero General Public License.
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554 | Notwithstanding any other provision of this License, you have
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563 | 14. Revised Versions of this License.
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565 | The Free Software Foundation may publish revised and/or new versions of
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569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
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573 | option of following the terms and conditions either of that numbered
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589 | 15. Disclaimer of Warranty.
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591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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600 | 16. Limitation of Liability.
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611 |
612 | 17. Interpretation of Sections 15 and 16.
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620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 | {one line to give the program's name and a brief idea of what it does.}
635 | Copyright (C) {year} {name of author}
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | {project} Copyright (C) {year} {fullname}
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
--------------------------------------------------------------------------------
/NAMESPACE:
--------------------------------------------------------------------------------
1 | # Generated by roxygen2: do not edit by hand
2 |
3 | S3method(print,splgrid)
4 | S3method(print,splicons)
5 | S3method(print,spllines)
6 | S3method(print,splpoints)
7 | S3method(print,splpolygons)
8 | S3method(spLayer,SpatialGridDataFrame)
9 | S3method(spLayer,SpatialLines)
10 | S3method(spLayer,SpatialPoints)
11 | S3method(spLayer,SpatialPolygons)
12 | S3method(spLayer,default)
13 | S3method(summary,basemap)
14 | S3method(summary,splgrid)
15 | S3method(summary,splicons)
16 | S3method(summary,spllines)
17 | S3method(summary,splpoints)
18 | S3method(summary,splpolygons)
19 | S3method(summary,ui)
20 | export(basemap)
21 | export(bmSource)
22 | export(chunkerize)
23 | export(col2hexa)
24 | export(layerLegend)
25 | export(spLayer)
26 | export(ui)
27 | export(writeMap)
28 | import(knitr)
29 | import(raster)
30 | import(sp)
31 | importFrom(grDevices,col2rgb)
32 | importFrom(grDevices,dev.off)
33 | importFrom(grDevices,heat.colors)
34 | importFrom(grDevices,png)
35 | importFrom(grDevices,rgb)
36 | importFrom(graphics,par)
37 | importFrom(methods,as)
38 | importFrom(methods,is)
39 | importFrom(utils,browseURL)
40 |
--------------------------------------------------------------------------------
/R/basemap.R:
--------------------------------------------------------------------------------
1 | #'Define a Tile Basemap Layer
2 | #'
3 | #'Define a new basemap layer from a tile server.
4 | #'
5 | #'@param URL a character string giving the tile server url or a the name of a pre-configured server.
6 | #'@param name a character string to name the layer.
7 | #'@param alpha a numeric value in \eqn{[0, 1]} setting the layer opacity.
8 | #'@param minZoom,maxZoom numeric values setting the minimum and maximum zoom level.
9 | #'@param tileSize a numeric value setting tile size (width and height in pixels, assuming tiles are square).
10 | #'@param tms logical. If \code{TRUE}, inverses Y axis numbering for tiles (for TMS services)
11 | #'
12 | #'@details \code{URL} should have the form \code{'http://{s}.somedomain.com/somepath/{z}/{x}/{y}.png'}
13 | #'with \code{{s}} a facultative subdomain, \code{{z}} the zoom level and \code{{x}}, \code{{y}} the coordinates.
14 | #'\pkg{rleafmap} comes with a list of pre-configured servers. Names of these servers are returned
15 | #'by the function \code{bmSource}.
16 | #'
17 | #'@return An object of class \code{basemap} which can be directly used in \code{\link{writeMap}}.
18 | #'@seealso \code{\link{spLayer}} to define data layers.
19 | #'@examples \dontrun{
20 | #' #A simple map with two nice basemaps.
21 | #' bm1 <- basemap("mapquest.map")
22 | #' bm2 <- basemap("stamen.watercolor")
23 | #' writeMap(bm1, bm2)
24 | #'}
25 | #'@export
26 | basemap <- function(URL, name=NULL, alpha=1, minZoom=0, maxZoom=18, tileSize=256, tms=FALSE){
27 | if(is.vector(URL) && length(URL)==1){
28 | URL <- as.character(URL)
29 | URL <- bmServer(URL)
30 | URL.cr <- bmCredit(URL)
31 | }else{
32 | stop("URL must be a single value character vector")
33 | }
34 | if(!is.numeric(alpha)){
35 | stop("alpha must be numeric")
36 | }else{
37 | if (alpha<0 || alpha>1){
38 | stop("alpha must be comprise between 0 and 1")
39 | }
40 | }
41 | if(!is.numeric(minZoom))
42 | stop("minZoom must be numeric")
43 | if(!is.numeric(maxZoom))
44 | stop("maxZoom must be numeric")
45 | if(!is.logical(tms))
46 | stop("tms must be set on TRUE or FALSE")
47 |
48 | res <- list(name, URL, URL.cr, alpha, minZoom, maxZoom, tileSize, tolower(as.character(tms)))
49 | names(res) <- c("name", "URL", "URL.cr", "alpha", "minZoom", "maxZoom", "tileSize", "tms")
50 | class(res) <- "basemap"
51 | return(res)
52 | }
53 |
--------------------------------------------------------------------------------
/R/chunkerize.R:
--------------------------------------------------------------------------------
1 | #' Multiple code chunks
2 | #'
3 | #' This function creates multiple code chunks from a function and along arguments marked with a star (*).
4 | #' Each of these special arguments is a list.
5 | #' The nth code chunk will use the nth element of each marked list (recycled if necessary) as argument.
6 | #'
7 | #' @param FUN the function to use for the chunks.
8 | #' @param arg.names a character vector giving the argument names of \code{FUN} to set.
9 | #' @param arg.values a vector giving the values or object names to assign to
10 | #' each argument given with \code{arg.names} (they must match in order).
11 | #' Object names must be backquoted or quoted.
12 | #' Lists names marked with a star (e.g. \code{"*L1"} for \code{L1})
13 | #' indicate their elements will be used sequentially in chunks.
14 | #' @param type the type of chunk to produce. Can be "\code{block}", "\code{inline}" or "\code{none}".
15 | #' @param echo logical indicating whether to include R source code in the result.
16 | #' @param warning logical indicating whether to print warnings in the result.
17 | #' @param error logical indicating whether to stop on errors.
18 | #' @param message logical indicating whether to print messages in the result.
19 | #' @param fig.width,fig.height numeric value setting width and height of the plots in inches.
20 | #' @param fig.align character string setting the alignment of the plots. Can be "\code{left}", "\code{right}" and "\code{center}".
21 | #' @param options a character string to specify the knitr options.
22 | #' This will overwrite the options set with the other arguments.
23 | #'
24 | #' @return a character vector of R code chunks which can be evaluated by \pkg{knitr}.
25 | #'
26 | #' @export
27 | chunkerize <- function(FUN, arg.names, arg.values, type = "block",
28 | echo = FALSE, warning = FALSE, error = FALSE, message = TRUE,
29 | fig.width = 4, fig.height = 4, fig.align = "center",
30 | options = NULL){
31 |
32 | if(!is.character(FUN)){
33 | FUN <- deparse(substitute(FUN))
34 | }
35 |
36 | type <- match.arg(type, c("block", "inline", "none"))
37 |
38 | arg.star <- sapply(arg.values, function(x) substr(x, 1, 1) == "*" & nchar(x) > 1)
39 | arg.values[arg.star] <- substr(arg.values[arg.star], 2, 100000L)
40 |
41 | star.len <- sapply(arg.values[arg.star], function(x) length(eval(parse(text = x))))
42 |
43 | if(max(star.len) != min(star.len)){
44 | stop("Rolling lists must have same lengths.")
45 | }
46 |
47 | arg.values.mat <- matrix(arg.values, nrow = max(star.len), ncol = length(arg.values), byrow = TRUE)
48 | idx <- paste("[[", seq(1:max(star.len)), "]]", sep = "")
49 |
50 | arg.values.mat[, which(arg.star)] <- paste(arg.values.mat[, which(arg.star)], idx, sep = "")
51 |
52 | arg.comp <- paste(arg.names, " = ", t(arg.values.mat), sep = "")
53 | arg.comp <- matrix(arg.comp, nrow = max(star.len), ncol = length(arg.values), byrow = TRUE)
54 | arg.comp <- apply(arg.comp, 1, paste, sep = "", collapse = ", ")
55 |
56 | res <- paste(FUN, "(", arg.comp, ")", sep = "")
57 |
58 | if(type == "inline"){
59 | res <- paste("`r ", res, "`", sep = "")
60 | }
61 |
62 | if(type == "block"){
63 | if(is.null(options)){
64 | options <- paste("echo=", echo,
65 | ", warning=", warning,
66 | ", error=", error,
67 | ", message=", message,
68 | ", fig.width=", fig.width,
69 | ", fig.height=", fig.height,
70 | ", fig.align='", fig.align, "'", sep = "")
71 | }
72 | res <- paste("\n```{r ", options, "}\n\t", res, "\n```\n", sep = "")
73 | }
74 |
75 | return(res)
76 | }
77 |
78 |
--------------------------------------------------------------------------------
/R/codeinc.R:
--------------------------------------------------------------------------------
1 |
2 | incLeaflet <- function(loc){
3 | if(loc == "online"){
4 | res <- paste("
5 | ")
6 | } else {
7 | res <- paste("
8 | ", sep="")
9 | }
10 | return(res)
11 | }
12 |
13 | incEncoding <- function(code){
14 | res <- paste("
15 |
17 |
18 | ", sep="")
19 | return(res)
20 | }
21 |
22 | incPopupCSS <- function(height, width){
23 | res <- paste0(
24 | ".leaflet-popup-content {
25 | padding-right:20px !important;
26 | width:auto !important;
27 | max-width:", width*0.75, "px !important;
28 | max-height:", height*0.75, "px !important;
29 | overflow:auto !important;
30 | }")
31 | return(res)
32 | }
33 |
34 | incData <- function(prefix){
35 | paste("
36 |
37 |
38 | ", # Fix le 2eme prefix + faire une fonction
39 | sep="")
40 | }
41 |
42 | initMap0 <- function(height, width){
43 | paste("", sep="")
44 | }
45 |
46 | initMap1 <- function(setView, setZoom){
47 | if(is.null(setView)) setView <- c(0, 0)
48 | if(is.null(setZoom)) setZoom <- 1
49 | paste("var map = L.map('map', {zoomControl:false, attributionControl:false}).setView([", setView[1], ", ", setView[2],"], ", setZoom, ");", sep="")
50 | }
51 |
52 | incInfoPanelCSS <- function(){
53 | ".info {
54 | padding: 6px 8px;
55 | background: rgba(255,255,255,0.8);
56 | box-shadow: 0 0 15px rgba(0,0,0,0.2);
57 | border-radius: 5px;
58 | }"
59 | }
60 |
61 | incLegendCSS <- function(){
62 | ".legend i {
63 | clear: left;
64 | float: left;
65 | margin-right: 8px;
66 | margin-top: 5px;
67 | }
68 | .legend p {
69 | float: left;;
70 | line-height: 5px;
71 | }
72 | .legend h1 {
73 | font-size: 10px;
74 | margin-top: 0px;
75 | margin-bottom: 2px;
76 | }
77 | .legend hr {
78 | margin-top: 2px;
79 | margin-bottom: 2px;
80 | display: block;
81 | height: 1px;
82 | border: 0;
83 | border-top: 1px solid #AAAAAA;
84 | }"
85 | }
--------------------------------------------------------------------------------
/R/genmeths.R:
--------------------------------------------------------------------------------
1 |
2 |
3 | splPrint <- function(x, ...){
4 | print.default(x, max = 10)
5 | }
6 |
7 | #' Printing spl object
8 | #'
9 | #' Print spl objects
10 | #'
11 | #'@param x an \code{spl} object.
12 | #'@param ... additional arguments. Not used.
13 | #'
14 | #'@rdname printspl
15 | #'@method print splpoints
16 | #'@export
17 | print.splpoints <- splPrint
18 |
19 | #'@rdname printspl
20 | #'@method print splicons
21 | #'@export
22 | print.splicons <- splPrint
23 |
24 | #'@rdname printspl
25 | #'@method print spllines
26 | #'@export
27 | print.spllines <- splPrint
28 |
29 | #'@rdname printspl
30 | #'@method print splpolygons
31 | #'@export
32 | print.splpolygons <- splPrint
33 |
34 | #'@rdname printspl
35 | #'@method print splgrid
36 | #'@export
37 | print.splgrid <- splPrint
38 |
39 |
40 |
41 |
42 | #' Summary of map elements
43 | #'
44 | #' Get a summary of a map element.
45 | #'
46 | #'@param object a map layer, \code{basemap}, \code{spl} or \code{ui} object.
47 | #'@param ... additional arguments. Not used.
48 | #'
49 | #'@rdname summarymaplayer
50 | #'@method summary basemap
51 | #'@export
52 | summary.basemap <- function(object, ...){
53 | cat(object$name, ":\nrleafmap tile layer\nSource : ", object$URL)
54 | }
55 |
56 | #'@rdname summarymaplayer
57 | #'@method summary splpoints
58 | #'@export
59 | summary.splpoints <- function(object, ...){
60 | cat(object$name, ":\nrleafmap vector layer of", length(object$coords[,1]), "points symbolized by circles \n")
61 | }
62 |
63 | #'@rdname summarymaplayer
64 | #'@method summary splicons
65 | #'@export
66 | summary.splicons <- function(object, ...){
67 | cat(object$name, ":\nrleafmap vector layer of", length(object$coords[,1]), "points symbolized by icons \n")
68 | }
69 |
70 | #'@rdname summarymaplayer
71 | #'@method summary spllines
72 | #'@export
73 | summary.spllines <- function(object, ...){
74 | cat(object$name, ":\nrleafmap vector layer of", length(object$coords), "lines \n")
75 | }
76 |
77 | #'@rdname summarymaplayer
78 | #'@method summary splpolygons
79 | #'@export
80 | summary.splpolygons <- function(object, ...){
81 | cat(object$name, ":\nrleafmap vector layer of", length(object$coords), "polygons \n")
82 | }
83 |
84 | #'@rdname summarymaplayer
85 | #'@method summary splgrid
86 | #'@export
87 | summary.splgrid <- function(object, ...){
88 | cat(object$name, ":\nrleafmap raster layer from a sp SpatialGridDataFrame\n------------\n")
89 | print(object$x)
90 | cat("------------")
91 | }
92 |
93 | #'@rdname summarymaplayer
94 | #'@method summary ui
95 | #'@export
96 | summary.ui <- function(object, ...){
97 | cat("User interface configuration for rleafmap maps\n------------\n")
98 | cat("Zoom position : ",object$zoom, "\n")
99 | cat("Layers control position : ",object$layers, "\n")
100 | cat("Attributions position : ",object$attrib, "\n")
101 | cat("Additionnal attribution text : ",object$attrib.text, "\n")
102 | cat("------------")
103 | }
--------------------------------------------------------------------------------
/R/legend.R:
--------------------------------------------------------------------------------
1 |
2 | #' Data layer legend
3 | #'
4 | #' This function creates a legend object that can be attached to a data layer.
5 | #'
6 | #' @inheritParams spLayer.SpatialPoints
7 | #' @param style the style of legend to generate.
8 | #' Can be one of "\code{points}", "\code{lines}", "\code{polygons}", "\code{icons}", "\code{gradient}".
9 | #' @param labels a vector to label each element of the legend.
10 | #' @param title a title which will appear above the legend.
11 | #' If \code{NULL} (default), it will inherit the name of the data layer during the compilation of the map.
12 | #' If \code{NA}, the legend will appear without title.
13 | #' @param position a character string indicating where should the legend be displayed.
14 | #' This must be one of "\code{topleft}", "\code{topright}", "\code{bottomleft}", "\code{bottomright}", "\code{none}"
15 | #' @param cells.range range of gradient values.
16 | #' @param cells.col a vector of any of the three kinds of \R color specifications giving the colors of the gradient.
17 | #' @param cells.alpha a vector of numeric values in \eqn{[0, 1]} setting the gradient opacity.
18 | #'
19 | #' @return an object \code{layerlegend} which can be passed to an \code{spLayer*} function through the \code{legend} argument.
20 | #'
21 | #' @export
22 | layerLegend <- function(style, labels = "", title = NULL, position = "bottomright",
23 | png = NULL, size = 5, png.width = NULL, png.height = NULL,
24 | stroke.col = 1, stroke.lwd = 1, stroke.lty = -1, stroke.alpha = 1,
25 | fill.col = 2, fill.alpha = 0.5,
26 | cells.range = c(1, 10), cells.col = heat.colors(12), cells.alpha = 1){
27 |
28 | position <- match.arg(position, c("bottomright", "topleft", "topright", "bottomleft", "none"), several.ok = FALSE)
29 | style <- match.arg(style, c("points", "lines", "polygons", "icons", "gradient"), several.ok = FALSE)
30 | labels <- as.character(labels)
31 | tab.max <- length(labels)
32 |
33 | labels <- paste0("\"", as.character(labels), "\"")
34 |
35 | if(style %in% c("points", "lines", "polygons")){
36 | stroke.lty <- paste0("\"", as.character(stroke.lty), "\"")
37 | }
38 |
39 | if(style == "points"){
40 | tab <- list(labels, size,
41 | stroke.col, stroke.lwd, stroke.lty, stroke.alpha,
42 | fill.col, fill.alpha)
43 | tab <- lapply(tab, rep, length.out = tab.max)
44 | names(tab) <- c("legLabels", "legSize",
45 | "legStrokeCol", "legStrokeLwd", "legStrokeLty", "legStrokeAlpha",
46 | "legFillCol", "legFillAlpha")
47 | tab$legWidth <- (tab$legSize + tab$legStrokeLwd) * 2
48 | tab$legHeight <- (tab$legSize + tab$legStrokeLwd) * 2
49 | }
50 |
51 | if(style == "icons"){
52 | if(is.null(png.width)){
53 | png.width <- size
54 | }
55 | if(is.null(png.height)){
56 | png.height <- size
57 | }
58 | tab <- list(labels, png, png.width, png.height)
59 | tab <- lapply(tab, rep, length.out = tab.max)
60 | names(tab) <- c("legLabels", "legPng", "legPngWidth", "legPngHeight")
61 | tab$legWidth <- tab$legPngWidth
62 | tab$legHeight <- tab$legPngHeight
63 | }
64 |
65 | if(style == "lines"){
66 | tab <- list(labels,
67 | stroke.col, stroke.lwd, stroke.lty, stroke.alpha)
68 | tab <- lapply(tab, rep, length.out = tab.max)
69 | names(tab) <- c("legLabels",
70 | "legStrokeCol", "legStrokeLwd", "legStrokeLty", "legStrokeAlpha")
71 | tab$legWidth <- rep(40, tab.max)
72 | tab$legHeight <- rep(stroke.lwd + 5, tab.max)
73 | }
74 |
75 | if(style == "polygons"){
76 | tab <- list(labels,
77 | stroke.col, stroke.lwd, stroke.lty, stroke.alpha,
78 | fill.col, fill.alpha)
79 | tab <- lapply(tab, rep, length.out = tab.max)
80 | names(tab) <- c("legLabels",
81 | "legStrokeCol", "legStrokeLwd", "legStrokeLty", "legStrokeAlpha",
82 | "legFillCol", "legFillAlpha")
83 | tab$legWidth <- rep(30, tab.max) + (2 * tab$legStrokeLwd)
84 | tab$legHeight <- rep(17, tab.max) + (2 * tab$legStrokeLwd)
85 | }
86 |
87 | if(style == "gradient"){
88 | breaks <- seq(min(cells.range), max(cells.range), length.out = length(cells.col))
89 | tab <- list()
90 | tab$gradcol <- col2rgb(cells.col, alpha = FALSE)
91 | tab$gradalpha <- rep(cells.alpha, length.out = length(cells.col))
92 | tab$gradlab <- pretty(breaks, 5)
93 | tab$gradlab <- tab$gradlab[c(-1, -length(tab$gradlab))]
94 | tab$gradoffset <- round(seq(0, 100, length.out = length(cells.col)), digits = 2)
95 | tab$legWidth <- 15
96 | tab$legHeight <- 150
97 | tab$gradlabpos <- rev((tab$legHeight/diff(cells.range)) * (tab$gradlab - min(cells.range)))
98 | }
99 |
100 | if(style %in% c("points", "polygons")){
101 | tab$legStrokeCol <- col2rgb(col2hexa(tab$legStrokeCol, alpha.channel = TRUE, alpha = tab$legStrokeAlpha, charstring = FALSE), alpha = TRUE)
102 | tab$legStrokeCol["alpha", ] <- tab$legStrokeAlpha
103 | tab$legFillCol <- col2rgb(col2hexa(tab$legFillCol, alpha.channel = TRUE, alpha = tab$legFillAlpha, charstring = FALSE), alpha = TRUE)
104 | tab$legFillCol["alpha", ] <- tab$legFillAlpha
105 | tab$legStrokeAlpha <- tab$legFillAlpha <- NULL
106 | }
107 |
108 | if(style %in% c("lines")){
109 | tab$legStrokeCol <- col2rgb(col2hexa(tab$legStrokeCol, alpha.channel = TRUE, alpha = tab$legStrokeAlpha, charstring = FALSE), alpha = TRUE)
110 | tab$legStrokeCol["alpha", ] <- tab$legStrokeAlpha
111 | }
112 |
113 | res <- list(style = style, title = title, position = position, tab = tab)
114 | class(res) <- "layerlegend"
115 | return(res)
116 |
117 | }
118 |
119 |
120 | processLegend <- function(x, icons.legend.dir, prefix){
121 | legend.name <- safeVar(paste0("legend", x$layer))
122 |
123 | res <- paste0("var ", legend.name, " = L.control({position: '", x$position, "'});\n")
124 | res <- paste0(res, legend.name, ".onAdd = function (map) {\n\nvar div = L.DomUtil.create('div', 'info legend');\n")
125 | if(!is.na(x$title)){
126 | res <- paste0(res, "div.innerHTML += '