I am unable to replicate an example from the ggrough
library (https://xvrdm.github.io/ggrough/articles/Customize%20chart.html). In particular, I am trying to replicate the following plot (minus the font aspects):
The code is from the same link above under the "Kindergarten" header.
I am using the following code:
library(hrbrthemes)
library(tidyverse)
library(gcookbook)
library(ggplot2)
library(ggrough)
ggplot(uspopage, aes(x=Year, y=Thousands, fill=AgeGroup)) +
geom_area(alpha=0.8) +
scale_fill_ipsum() +
scale_x_continuous(expand=c(0,0)) +
scale_y_comma() -> 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)
However, I am unable to replicate the above. Here is what I get:
Again, I am not worried about the fonts, but do want to get the shaded geom_area to work. It currently doesn't render at all. For reference, here is what the p
object yields (i.e., the plot before it goes through the ggrough
processing):
Also note that I am able to replicate the "Blueprint" example, which uses geom_col
. So it appears that something is going wrong with ggrough
processing the geom_area
, but not sure.
The ggrough package doesn't work well with the current version of ggplot2 for geom_area
, because it looks for the target area in xml nodes bearing the name "polyline". In older versions of ggplot2, this probably worked fine, because each area was enclosed by a polyline. In more recent versions, however, this is no longer the case (see breaking changes under 3.3.0).
See if the following works for you:
parse_*
function that look for "polygon", rather than "polyline".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"))
}
}
parse_polygons
for GeomArea layers.In addition, I've added in GeomRibbon (which appeared to be missing from the original but is really a more general case of GeomArea) & moved GeomViolin over from parse_areas
to parse_polygons
, because it faces the same issue.
(Note: GeomSmooth will probably break too, but I think its parse function will take a bit more tweaking, compared to GeomRibbon / GeomViolin, & I'm not seeing a use case for it...)
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))
}
Test:
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)
Additional test for geom_ribbon
:
# 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)
Session info:
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
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