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March 7, 2020 20:48
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Re-write coord-sf to accept bbox
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| add_bbox_nudge_x <- function (b, i) { | |
| if (length(i) == 1) { | |
| b[c(1, 3)] <- b[c(1, 3)] + c(i, -i) | |
| } else { | |
| b[c(1, 3)] <- b[c(1, 3)] + c(i[1], i[2]) | |
| } | |
| b | |
| } | |
| add_bbox_nudge_y <- function (b, i) { | |
| if (length(i) == 1) { | |
| b[c(2, 4)] <- b[c(2, 4)] + c(i, -i) | |
| } else { | |
| b[c(2, 4)] <- b[c(2, 4)] + c(i[1], i[2]) | |
| } | |
| b | |
| } | |
| st_xlim <- function (x) UseMethod("st_xlim") | |
| st_xlim.sf <- function (x) st_bbox(x)[c(1, 3)] | |
| st_xlim.sfc <- st_xlim.sf | |
| st_xlim.bbox <- function (x) x[c(1, 3)] | |
| st_ylim <- function (x) UseMethod("st_ylim") | |
| st_ylim.sf <- function (x) st_bbox(x)[c(2, 4)] | |
| st_ylim.sfc <- st_ylim.sf | |
| st_ylim.bbox <- function (x) x[c(2, 4)] | |
| st_xdist <- function (x) UseMethod("st_xdist") | |
| st_ydist <- function (x) UseMethod("st_ydist") | |
| st_xdist.sf <- function (x) { | |
| xlim <- st_xlim(x) | |
| xlim[2] - xlim[1] | |
| } | |
| st_xdist.sfc <- st_xdist.sf | |
| st_xdist.bbox <- function (x) { | |
| x[2] - x[1] | |
| } | |
| st_ydist.sf <- function (x) { | |
| ylim <- st_ylim(x) | |
| ylim[2] - ylim[1] | |
| } | |
| st_ydist.sfc <- st_ydist.sf | |
| st_ydist.bbox <- function (x) { | |
| x[2] - x[1] | |
| } | |
| coord_sf <- function (lims = NULL, xlim = NULL, ylim = NULL, expand = TRUE, crs = NULL, | |
| datum = sf::st_crs(4326), label_graticule = waiver(), label_axes = waiver(), | |
| ndiscr = 100, default = FALSE, clip = "on") { | |
| if (is.waive(label_graticule) && is.waive(label_axes)) { | |
| label_graticule <- "" | |
| label_axes <- "--EN" | |
| } | |
| else { | |
| label_graticule <- label_graticule %|W|% "" | |
| label_axes <- label_axes %|W|% "" | |
| } | |
| if (is.character(label_axes)) { | |
| label_axes <- parse_axes_labeling(label_axes) | |
| } | |
| else if (!is.list(label_axes)) { | |
| stop("Panel labeling format not recognized.", call. = FALSE) | |
| label_axes <- list(left = "N", bottom = "E") | |
| } | |
| if (is.character(label_graticule)) { | |
| label_graticule <- unlist(strsplit(label_graticule, "")) | |
| } | |
| else { | |
| stop("Graticule labeling format not recognized.", | |
| call. = FALSE) | |
| label_graticule <- "" | |
| } | |
| if (!is.null(lims)) { | |
| xlim <- st_xlim(lims) | |
| ylim <- st_ylim(lims) | |
| } | |
| ggproto(NULL, CoordSf, limits = list(x = xlim, y = ylim), | |
| datum = datum, crs = crs, label_axes = label_axes, label_graticule = label_graticule, | |
| ndiscr = ndiscr, expand = expand, default = default, | |
| clip = clip) | |
| } |
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