CODEWITHSUNDEEP
rggplot2histogram
user3122557
user3122557

Reputation: 3

r different panels histogram

I'm trying to draw several plots with R, but I'm new to it. My data looks like this:

Item    Count   Type

Apple   118 A

Orange  63  A

Pear    126 A

Plum    193 A

Lemon   240 A

Peas    46  B

Beans   87  B

Carrot  171 B

Onion   123 B

Poatato 35  B

Cheese  44  C

Eggs    13  C

Ham 31  C

Fish    10  C

And I want to make a different histogram for each type of item (A, B and C) plotting the count values. I managed to plot overlapping histograms:

ggplot(myfile, aes(x= Count, fill = Type))+ geom_histogram (binwidth = 10, alpha = 0.5, position = "identity")

But I wanted to know if it is possible to plot separate histograms, as many as different types exist in the data.

Upvotes: 0

Views: 752

Answers (2)

datawookie
datawookie

Reputation: 6534

Is this what you are after?

data <- read.table(text="Item    Count   Type
Apple   118 A
Orange  63  A
Pear    126 A
Plum    193 A
Lemon   240 A
Peas    46  B
Beans   87  B
Carrot  171 B
Onion   123 B
Poatato 35  B
Cheese  44  C
Eggs    13  C
Ham 31  C
Fish    10  C",header=TRUE) 

library(ggplot2)

ggplot(data, aes(x= Item, y = Count, fill = Type)) +
  geom_bar(alpha = 0.5, stat = "identity") +
  facet_wrap(~ Type, ncol = 1)

enter image description here

Upvotes: 2

Spacedman
Spacedman

Reputation: 94202

This is called 'faceting'. Try:

 ggplot(myfile, aes(x= Count, fill = Type))+ geom_histogram (binwidth = 10, alpha = 0.5, position = "identity")+facet_grid(~Type)

And read the help for all the faceting functions in the ggplot documentation.

Upvotes: 0

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