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I look for a very efficient and useful way to use the nested bar charts. A mode where you can demonstrate divisions and subdivisions in the same graph. How to generate such a graph in R?
1 answer
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To produce the chart above just follow the example below:
install.packages('ggplot2')
library(ggplot2)
install.packages("reshape")
library(reshape)
install.packages("scales")
library(scales)
#.................
# Exemplo de dados
df <- read.csv(textConnection("Segment,Alpha,Beta,Gamma,Delta
A,1416649,590270,236108,118054
B,708325,531243,354162,177081
C,354162,354162,236108,236108
D,147568,147568,147568,147568"))
closeAllConnections()
#.........................................................
# Colocando tudo em uma mesma escala e rotulando os eixos
dfa <- melt(df, id = c("Segment"), variable_name = "Company")
#...................
# Tratando do eixo Y
ylim <- max(cast(dfa, Company ~ ., sum)[, 2],
cast(dfa, Segment ~ ., sum)[, 2])
#.........
# Plotando
p <- ggplot(dfa) + scale_y_continuous(limits = c(0,ylim), breaks = NULL)
p1 <- p + geom_bar(aes(Company, value), stat = "identity",breaks = NULL)
(p2 <- p1 + geom_bar(aes(Company, value, fill = Segment),
stat = "identity",breaks = NULL, position = "dodge"))
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Personally, I don’t like that kind of chart. I think the same information can be visualized in the stacked bar graph, which also makes it easier to compare the distribution of subgroups between groups. (http://docs.ggplot2.org/current/geom_bar-16.png).
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Daniel, it’s just another graphical alternative. I like this one that you presented and also this one that I put in the answer. Depending on where you publish, newspaper, internet, magazine, one style or another can be the most enjoyable for the interpretation of readers.
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John, this question had been closed because the staff thought it was unclear what was being asked. We reopened. However, to try to avoid this type of closure, when asking a question of this type, sometimes it is interesting to put an example of what you want to achieve (such as the graphic itself that you put in the answer!), or more details than you want. Here’s a discussion that might be helpful, Hugs! http://meta.pt.stackoverflow.com/questions/824/como-crea-um-exemplo-m%C3%Adnimo-reproduces%C3%Advel-em-r/825#825
– Carlos Cinelli
I get it, Carlos, thank you very much! I’ll keep this in mind next time. !
– João Dias