Dear all,
I have problems adding new names to the legend (not the legend title).
I have tried all sorts of versions involving scale_fill_discrete and themes.
Weirdly, my method works fine when changing legend when making a barplot
instead.
I have searched and tried and am soon throwing the computer out of the window.
Please, help. I have read the help pages, but I don't understand why this won't
work.
The plot produced below is extremely ugly. Ignore this. I just wanted to add
the full script for my own data. With my own data the plot looks fine.
# some dummy data:
mydata<- data.frame(week = factor(rep(c("19", "21", "23", "25", "27", "29",
"31", "33",
"35", "37", "39"), each = 45*3)), #week
station = factor(rep(c("BY31", "B1", "H2", "H3", "H4",
"H5", "H6", "H7", "H8"), each =
15)), #station
year = factor(rep(c("2007", "2008", "2009"), each = 45)),
#station
organism = factor(rep(c("zpl", "ses", "cy"), each = 5)),
#organism
var1 = rnorm(1485, mean = rep(c(0, 3, 15), each = 40),
sd = rep(c(1, 3, 6), each = 20)))
library(ggplot2)
p <- ggplot(mydata,aes(week,var1))+
facet_grid(year~station, scales = "free")+
scale_shape_manual(values = 1:3) +
geom_point(mapping=aes(shape=organism))+
theme_bw() +
theme(strip.background = element_blank()) +
xlab("Week")+
ylab(expression(paste("Biomass (", mu, "g ", L^-1, ")")))+
geom_line(aes(group=organism, linetype=organism))+
theme(strip.text.x = element_text(size = 10, colour="black", family="serif",
angle=00)) +
theme(strip.text.y = element_text(size = 10, colour="black", family="serif",
angle=90)) +
theme(axis.text.x = element_text(size = 10, colour="black", family="serif",
angle=00)) +
theme(axis.text.y = element_text(size = 10, colour="black", family="serif",
angle=00)) +
theme(axis.title.x = element_text(size=10, colour="black", family="serif",
angle=00))+
theme(axis.title.y = element_text(size=10, colour="black", family="serif",
angle=90))
p
p1 <- p+theme(legend.title=element_blank())
p1
p2 <- p1+ theme(legend.key = element_blank())
p3 <- p2 + theme(legend.position="bottom")
p3 + scale_fill_discrete( #here is
the issue! It should be discrete and fill?!
breaks=c("Anab_ug_L", "Aph_ug_L", "Nod_ug_L"),
labels=c("Anabaena spp.", "Aphanizomenon sp.",
"N. spumigena"))
with kind regards
Anna Zakrisson Braeunlich
PhD student
Department of Ecology, Environment and Plant Sciences
Stockholm University
Svante Arrheniusv. 21A
SE-106 91 Stockholm
Sweden/Sverige
Lives in Berlin.
For paper mail:
Katzbachstr. 21
D-10965, Berlin - Kreuzberg
Germany/Deutschland
E-mail: anna.zakris...@su.se
Tel work: +49-(0)3091541281
Mobile: +49-(0)15777374888
LinkedIn: http://se.linkedin.com/pub/anna-zakrisson-braeunlich/33/5a2/51b
><((((º>`. . `. . `. . ><((((º>`. . `. . `. .><((((º>`. . `. .
>`. .><((((º>
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