R manually set shape by factor

Question

Asked this question the other day but no one could visualize my question so ive made an example.

A <- c(\'a\',\'b\', \'c\',\'d\',\'e\')
types <- fa         


        

Answer 1

If I'm understanding you correctly, there will always be (at most) the five categories "a" - "e", and you want the shapes and colors for these to be consistent across datasets. Here is one way (note: gg_color_hue(...) is from here):

# set up shapes
shapes <- c(15,18,16,17,19)
names(shapes) <- letters[1:5]

# set up colors
gg_color_hue <- function(n) { # ggplot default colors
  hues = seq(15, 375, length=n+1)
  hcl(h=hues, l=65, c=100)[1:n]
}
colors <- gg_color_hue(5)
names(colors) <- names(shapes)

# original data
ggplot(ABC, aes(x=B ,y=C ,size=D, colour=types,label=types, shape=types)) +
  geom_point()+geom_text(size=2, hjust=0,colour="black", vjust=0) +
  scale_size_area(max_size=20, "D", breaks=c(100,500,1000,3000,5000))  +
  scale_x_log10(lim=c(0.05,10),breaks=c(0.1,1,10))+ 
  scale_y_continuous(lim=c(0,30000000)) +
  scale_shape_manual(values=shapes) + scale_color_manual(values=colors)

#new data
DEF <- data.frame(B,C,D,types=factor(c("a","a","a","d","e")))
ggplot(DEF, aes(x=B ,y=C ,size=D, colour=types,label=types, shape=types)) +
  geom_point()+geom_text(size=2, hjust=0,colour="black", vjust=0) +
  scale_size_area(max_size=20, "D", breaks=c(100,500,1000,3000,5000))  +
  scale_x_log10(lim=c(0.05,10),breaks=c(0.1,1,10))+ 
  scale_y_continuous(lim=c(0,30000000)) +
  scale_shape_manual(values=shapes) + scale_color_manual(values=colors)