Dear all
I have such data
temp <- structure(list(x = c(1.22640164371796, 2.06054252402081,
0.648406692116093,
0.502688462027622, 1.20971015442933, -1.33912870469085, 1.04053747125611,
1.08845105918041, 1.6409121019292, 0.596150765260052, 1.78013122654094,
0.4709422376346), y = c(9.09784917753244, 13.504613667029, 6.32295145782312,
4.91330174840941, 9.64505500251317, -4.36103528399272, 7.24123291486505,
9.71909654124553, 9.95890922449066, 5.50184347916369, 11.9072994677964,
5.42938848141327), a = c("b", "b", "b", "b", "b", "b", "a", "a",
"a", "a", "a", "a"), b = c("e", "e", "f", "f", "e", "e", "f",
"f", "f", "f", "f", "f"), c = c("j", "j", "j", "k", "k", "k",
NA, NA, NA, NA, NA, NA), d = c("o", "o", "o", "o", "o", "o",
"o", "o", "p", "p", "p", "p")), .Names = c("x", "y", "a", "b",
"c", "d"), row.names = c(NA, 12L), class = "data.frame")
and I can make ggplot with colour, shape, and size for variables a,b, and c.
p <- ggplot(temp, aes(x=x, y=y, colour=c, shape=b, size=a))
p+geom_point()+geom_smooth(method="lm", size=1,
se=FALSE)+scale_size_discrete(range = c(2, 4))
Some values are missing for variable "c" and I would like to mark them by
variable "d" let say by plotting different shape based on value in this
variable d. Actually I can tune this variable to have missing values if
necessary.
I thought that something like that can do it
p1 <- p+geom_point()+geom_smooth(method="lm", size=1,
se=FALSE)+scale_size_discrete(range = c(2, 4))
p1 + geom_point(data=temp, aes(x=x, y=y, shape=d)) )
However I need to have separate legends for variable b and d respectively so
that these values do not mix together.
To make it short, I need two different legends for shape for 2 variables in one
plot.
Any hints?
Petr
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