Displaying multiple data frames in ggplot2

Question

I am trying to layer multiple data frames in one line plot, with x = index, y = values. The 8 data.frames I work with come in this format (index and va

Answer 1

No hive mind required:

d0 <- data.frame(index = 1:100, values = rnorm(100))
d1 <- data.frame(index = 1:200, values = rnorm(200))
d2 <- data.frame(index = 1:100, values = rnorm(100))
d3 <- data.frame(index = 1:100, values = rnorm(100))
d4 <- data.frame(index = 1:100, values = rnorm(100))
d5 <- data.frame(index = 1:500, values = rnorm(500))
d6 <- data.frame(index = 1:100, values = rnorm(100))
d7 <- data.frame(index = 1:100, values = rnorm(100))

require(ggplot2)
p0 <- ggplot(d0, aes(x=index, y=values)) + geom_point(alpha=.3)
p1 <- ggplot(d1, aes(x=index, y=values)) + geom_point(alpha=.3)
p2 <- ggplot(d2, aes(x=index, y=values)) + geom_point(alpha=.3)
p3 <- ggplot(d3, aes(x=index, y=values)) + geom_point(alpha=.3)
p4 <- ggplot(d4, aes(x=index, y=values)) + geom_point(alpha=.3)
p5 <- ggplot(d5, aes(x=index, y=values)) + geom_point(alpha=.3)
p6 <- ggplot(d6, aes(x=index, y=values)) + geom_point(alpha=.3)
p7 <- ggplot(d7, aes(x=index, y=values)) + geom_point(alpha=.3)

require(Rmisc)
multiplot(p0, p1, p2, p3, p4, p5, p6, p7, cols=2)