Line chart with gray and black dotted lines.

Question

With the ggplot2 R package, I made a line graph with 6 color lines (refers to 6 factor levels), and I would like to change it in black and white by making 3 BLACK solid, dashed and dashed lines plus 3 GRAY solid, dashed and dashed lines . I am trying to use scale_linetype_manual () and scale_color_grey (), but I cannot mix gray and black dotted lines.

Here's the gray code:

ggplot() + 
  geom_line(data = f[!is.na(f$fr),], aes(x=date2, y=fr, colour=locality, group=locality), 
            size = 1.0) + 
  scale_color_grey(start = 0, end = 0.9, guide="legend", name="Locality", 
                   labels=c("a","b","c","d","e","f")) + 
  xlab("") + 
  ylab("") + 
  theme_bw() +
  theme(legend.position = "top", panel.background = element_rect(fill = "white"), 
        panel.grid.major = element_line(colour = "white"), 
        axis.text.x=element_text(angle=90,hjust=1,vjust=0.5)) + 
  facet_grid(.~year)    

whereas this is a code with dashed lines:

ggplot() + 
  geom_line(data = f[!is.na(f$fr),], aes(x=date2, y=fr, linetype=locality, group=locality), 
            size = 1.0) + 
  scale_linetype_manual(name="Locality", 
                        values=c("solid", "dashed", "dotted", "dotdash", "longdash", "twodash"), 
                        labels=c("a","b","c","d","e","f")) +
  xlab("") + 
  ylab("") + 
  theme_bw()+ 
  theme(legend.position = "top", panel.background = element_rect(fill = "white"), 
        panel.grid.major = element_line(colour = "white"), 
        axis.text.x=element_text(angle=90,hjust=1,vjust=0.5)) +
  facet_grid(.~year)    

therefore .. Someone can help me create the same storyline with one solid black line, one dashed black line, one dashed black line, one solid gray line, etc.

Answer 1

colour, linetype, .

d <- data.frame(locality = rep(letters[1:6], each = 2),
            x = 1:2,
            y = rep(1:6, each = 2))

ggplot(d, aes(x = x, y = y,colour = locality, linetype = locality)) + 
  geom_line() +
  theme_bw() +
  scale_color_manual(name = "Locality",
                     values = c('black', 'black', 'black', 'grey', 'grey', 'grey'),
                     labels = c("a","b","c","d","e","f")) +
  scale_linetype_manual(name = "Locality", 
                        values = c("solid", "dashed", "dotted", "solid", "dashed", "dotted"), 
                        labels = c("a","b","c","d","e","f"))

Answer 2

MLavoie, , . , , , - :

vectCol=c("a"="black", "b"="black", "c"="black", "d"="grey","e"="grey", "f"="grey")
vectTyp=c("a"="solid", "b"="dashed", "c"="dotted", "d"="solid","e"="dashed", "f"="dotted")

" " ggplot, scale_manual .

ggplot(data = f[!is.na(f$fr),], aes(x=date2, y=fr, colour=locality,group=locality, linetype=locality)) + 
geom_line(size = 1.0) + 
scale_color_manual(values=vectCol, guide="legend", name="Locality", labels=c("a","b","c","d","e","f"))+ 
scale_linetype_manual(values=vectTyp, guide="legend", name="Locality", labels=c("a","b","c","d","e","f"))+
xlab("") + ylab("") + theme_bw() + 
theme(legend.position = "top", panel.background = element_rect(fill ="white"), panel.grid.major = element_line(colour = "white"), 
    axis.text.x=element_text(angle=90,hjust=1,vjust=0.5)) + facet_grid(.~year)