My data looks like this:
> head(Full.df)
Date Month Week Year Count.S Count.G Count.W Count.F
1 2006-01-02 2006-01-01 2006-01-02 2006-01-01 0 7 9 6
2 2006-01-03 2006-01-01 2006-01-02 2006-01-01 0 13 12 4
3 2006-01-04 2006-01-01 2006-01-02 2006-01-01 0 13 15 4
4 2006-01-05 2006-01-01 2006-01-02 2006-01-01 0 20 6 3
5 2006-01-06 2006-01-01 2006-01-02 2006-01-01 0 19 19 4
6 2006-01-07 2006-01-01 2006-01-02 2006-01-01 0 4 16 5
For a single variable I used the next line of code:
ggplot(data = Full.df, aes(Month, Count.S)) + stat_summary(fun.y = sum, geom ="line") + scale_x_date(
labels = date_format("%m-%y"),
breaks = "3 months")
I would like to plot Count.S
, Count.G
, Count.W
, Count.F
as four lines on the same plane, but I can't figure out how to plot all four variables in ggplot
(or any other package for that matter). Thanks.
EDIT: While the link provided to a different question is incredibly useful, the answer there explains how to plot different graphs in one image. However, I was wondering how to plot lines corresponding to various variables in a single XY axis.
Two ways of doing this:
If sample data created as follows:
Full.df <- data.frame(Date = as.Date("2006-01-01") + as.difftime(0:364, units = "days"))
Full.df$Month <- as.Date(format(Full.df$Date, "%Y-%m-01"))
Full.df[paste0("Count.", c("S", "G", "W", "F"))] <-
matrix(sample(100, 365 * 4, replace = TRUE), ncol = 4)
Optimal way using reshape2 package:
molten <- melt(Full.df, id.vars = c("Date", "Month"),
variable.name = "Category", value.name = "Count")
ggplot(data = molten, aes(x = Month, y = Count, colour = Category)) +
stat_summary(fun.y = sum, geom ="line") +
scale_x_date(labels = date_format("%m-%y"), breaks = "3 months")
Alternative using multiple geoms but no legend:
ggplot(Full.df, aes(x = Month)) +
stat_summary(aes(y = Count.S), colour = "blue", fun.y = sum, geom = "line") +
stat_summary(aes(y = Count.G), colour = "red", fun.y = sum, geom = "line") +
stat_summary(aes(y = Count.W), colour = "green", fun.y = sum, geom = "line") +
stat_summary(aes(y = Count.F), colour = "orange", fun.y = sum, geom = "line") +
scale_x_date(labels = date_format("%m-%y"), breaks = "3 months")
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