Plot histogram for discrete data
26,213
Solution 1
I think what you are looking for is actually a bar plot, not a histogram. geom_bar
is meant to be used for that. For example:
library(ggplot2)
ggplot(diamonds, aes(cut)) + geom_bar()
Solution 2
table() should do the job:
Creating data:
ips <- sample(seq(100,999), 100, replace = TRUE)
levels <- sample(LETTERS, 100, replace = TRUE)
data <- data.frame(ips, levels)
now counting:
unique.levels <- sort(unique(data$levels))
count <- table(data$levels)
count.df <- data.frame(unique.levels, count)
Now plot:
plot <- ggplot(count.df, aes(unique.levels, Freq, fill=unique.levels))
plot + geom_bar(stat="identity") +
labs(title="Level Count",
subtitle="count for every lvl played",
y="Count", x="Levels") +
theme(legend.position="none")
I know that geom_bar() alone will count levels for you if you use data$levels in aes(), BUT count.df carries that info so you can use it elsewhere.
Author by
Shweta Sisodiya
Updated on July 16, 2022Comments
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Shweta Sisodiya almost 2 years
I'm struggling a lot to plot histogram using R for the following data:
ip_addr_player_id,event_name,level,time_to_finish, 118.93.180.241, Puzzle Complete, Puzzle 1,33.28 seconds
This is a single row of data. I need to pot histogram of the number player vs the number of levels played. I was able to successfully plot scatter plot, points, lines etc. but no histogram.
on Xaxis: number of levels. Yaxis: Number of player.
Each ip address is unique and multiple levels can be played by single ip address. I have attached a sample picture.