ggfx is a (currently experimantal) package that allows the use ofvarious filters and shaders on ggplot2 layers.
You can install ggfx from CRAN in the usual manner(install.packages('ggfx')) or you can grab the developmentversion directly from github using the devtools package:
# install.packages('devtools')devtools::install_github('thomasp85/ggfx')The basic API of ggfx is to provide a range ofwith_*()modifier functions instead of special versions of common geoms. Thismeans that ggfx will work with any geom from ggplot2 and the extensionpackages (I think…). An example showing some of the differentfunctionalities are given below. Note that the output is produced withregular geoms.
library(ggplot2)library(ggfx)ggplot()+as_reference(geom_polygon(aes(c(0,1,1),c(0,0,1)),colour =NA,fill ='magenta'),id ="displace_map" )+with_displacement(geom_text(aes(0.5,0.5,label ='ggfx-ggfx'),size =25,fontface ='bold'),x_map =ch_red("displace_map"),y_map =ch_blue("displace_map"),x_scale =unit(0.025,'npc'),id ="text" )+with_blend(geom_density_2d_filled(aes(rnorm(1e4,0.5,0.2),rnorm(1e4,0.5,0.2)),show.legend =FALSE),bg_layer ="text",blend_type ="in",id ="blended" )+with_shadow("blended",sigma =3)+coord_cartesian(xlim =c(0,1),ylim =c(0,1),clip ='off')+labs(x =NULL,y =NULL)
Please note that the ggfx project is released with aContributorCode of Conduct. By contributing to this project, you agree to abideby its terms.