ggrough 包不适用于geom_area 的当前版本的 ggplot2,因为它会在名为“polyline”的 xml 节点中查找目标区域。在旧版本的 ggplot2 中,这可能工作得很好,因为每个区域都被折线包围。然而,在最近的版本中,情况不再如此(请参阅breaking changes under 3.3.0)。
看看以下是否适合你:
- 定义查找“多边形”而不是“折线”的
parse_* 函数版本。
parse_polygons <- function (svg) {
shape <- "polygon" # was "polyline" in ggrough:::parse_areas
keys <- NULL
ggrough:::parse_shape(svg, shape, keys) %>% {
purrr::map(.,
~purrr::list_modify(.x,
points = stringr::str_squish(.x$points) %>%
{stringr::str_glue("M{.}Z")},
shape = "path"))
}
}
- 更改 ggrough 中相应的未导出函数,以将新定义的
parse_polygons 用于 GeomArea 层。
此外,我在 GeomRibbon 中添加了(它似乎从原始版本中丢失,但实际上是 GeomArea 的更一般情况)并将 GeomViolin 从parse_areas 移至parse_polygons,因为它面临同样的问题.
(注意:GeomSmooth 也可能会中断,但我认为它的解析功能需要更多调整,与 GeomRibbon / GeomViolin 相比,我没有看到它的用例......)
trace(ggrough:::parse_rough, edit = TRUE)
# paste the following function into the pop-up window
function (svg, geom) {
rough_els <- list()
if (geom %in% c("GeomCol", "GeomBar", "GeomTile", "Background")) {
rough_els <- append(rough_els, parse_rects(svg))
}
if (geom %in% c("GeomSmooth", "Background")) { # removed GeomArea / GeomViolin from here
rough_els <- append(rough_els, parse_areas(svg))
}
if (geom %in% c("GeomArea", "GeomRibbon", "GeomViolin")) { # new condition here
rough_els <- append(rough_els, parse_polygons(svg))
}
if (geom %in% c("GeomPoint", "GeomJitter", "GeomDotPlot", "Background")) {
rough_els <- append(rough_els, parse_circles(svg))
}
if (geom %in% c("GeomLine", "GeomSmooth", "Background")) {
rough_els <- append(rough_els, parse_lines(svg))
}
if (geom %in% c("Background")) {
rough_els <- append(rough_els, parse_texts(svg))
}
purrr::map(rough_els, ~purrr::list_modify(.x, geom = geom))
}
测试:
library(ggplot2)
library(ggrough)
uspopage <- gcookbook::uspopage
p <- ggplot(uspopage, aes(x=Year, y=Thousands, fill=AgeGroup)) +
geom_area(alpha=0.8) +
scale_x_continuous(expand=c(0,0)); p
options <- list(GeomArea=list(fill_style="hachure",
angle_noise=0.5,
gap_noise=0.2,
gap=1.5,
fill_weight=1))
get_rough_chart(p, options)
geom_ribbon 的附加测试:
# using example from geom_ribbon help page
pp <- data.frame(year = 1875:1972, level = as.vector(LakeHuron)) %>%
ggplot(aes(year)) +
geom_ribbon(aes(ymin = level - 1, ymax = level + 1),
fill = "grey70")
options <- list(GeomRibbon=list(fill_style="hachure",
angle_noise=0.5,
gap_noise=0.2,
gap=1.5,
fill_weight=1))
get_rough_chart(pp, options)
会话信息:
R version 4.0.1 (2020-06-06)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 15063)
Matrix products: default
locale:
[1] LC_COLLATE=English_Singapore.1252 LC_CTYPE=English_Singapore.1252
[3] LC_MONETARY=English_Singapore.1252 LC_NUMERIC=C
[5] LC_TIME=English_Singapore.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] gdtools_0.2.2 dplyr_1.0.0 ggrough_0.1.0 ggplot2_3.3.2
loaded via a namespace (and not attached):
[1] Rcpp_1.0.5 cpp11_0.2.1 pillar_1.4.6 compiler_4.0.1
[5] plyr_1.8.6 Rmisc_1.5 forcats_0.5.0 tools_4.0.1
[9] boot_1.3-25 digest_0.6.25 jsonlite_1.7.1 lifecycle_0.2.0
[13] tibble_3.0.3 gtable_0.3.0 lattice_0.20-41 pkgconfig_2.0.3
[17] rlang_0.4.7 rstudioapi_0.11 yaml_2.2.1 xml2_1.3.2
[21] withr_2.2.0 stringr_1.4.0 htmlwidgets_1.5.1 systemfonts_0.3.1
[25] generics_0.0.2 vctrs_0.3.4 grid_4.0.1 tidyselect_1.1.0
[29] data.table_1.12.8 svglite_1.2.3.2 glue_1.4.2 R6_2.4.1
[33] gcookbook_2.0 tidyr_1.1.0 reshape2_1.4.4 purrr_0.3.4
[37] farver_2.0.3 magrittr_1.5 htmltools_0.5.0 scales_1.1.1
[41] ellipsis_0.3.1 fortunes_1.5-4 colorspace_1.4-1 labeling_0.3
[45] stringi_1.5.3 munsell_0.5.0 crayon_1.3.4