rphylopic waffle

gistfile1.txt

####  Putting rphylopics into a waffle type chart


### WARNING - I know this code is a bit 'hacky' - I was just trying to make it work.  
### There are likely better ways to do it, but this is how I got it up and running.

library(rphylopic)
#get phylopics
bird1<-get_image("23c63b97-e0ab-4b43-89a4-e2358f4f09ec", size="64")[[1]]
bird2<-get_image("abab8520-b72b-4ecb-97fd-945f8675fe61", size="64")[[1]]
bird3<-get_image("cab6e19e-00e9-401e-9b8a-c5ba70b5e9bb", size="64")[[1]]


phylowaffle <- function(x, colors, animals, rows=3){

library(waffle)
library(rphylopic)

obj <- waffle(x, rows, colors=rep("white", length(x)))
robj <- obj$data

mydf <- data.frame(value = levels(factor(robj$value)), animals)
mydf1 <- data.frame(value = levels(factor(robj$value)), colors)
robj$color <- mydf1$colors[match(robj$value, mydf1$value)]  #add in animals
robj$animals <- mydf$animals[match(robj$value, mydf$value)]  #add in animals

#loop to generate text
add<-NULL
for(i in 1:nrow(robj)){
  add[[i]] <- paste0("add_phylopic(", robj[i,5], ", x=", robj[i,2], ", y=", robj[i,1], ", ysize=.4, alpha=1, color='", robj[i,4], "')")
}

add1 <- add[sapply(add, function(x) !grepl("NA",x))==T]


#loop to add to plot
for(i in 1:length(add1)){
  obj <- obj + eval(parse(text=add1[i]))
}

return(obj)
}



###
phylowaffle(x=c(4,5,7), 
            animals=c("bird1", "bird2", "bird3"), 
            colors=c("black", "red", "mediumblue"),
            rows=4)

For pictures such as this one that I've made - https://twitter.com/jalapic/status/583798245052284929/photo/1 - I manually made the legend (working on how to incorporate that). The title and footer are made using xlab and ggtitleparameters in the waffle function.

Additionally, I have updated this function so that an additional parameter picsize= is added. Simply this enables you to play around with the ysize=.4, bit such that the size of the phylopic can be changed around (will try to add to gist later).

For those that do not know much about phylopic - the images can be accessed here: http://phylopic.org/