Approximate graphics

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How do I approximate the graphics generated by the following command?

par(mfrow=c(2,2))
barplot(1:4) 
barplot(1:4)
barplot(1:4)
barplot(1:4)
r

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2 answers

5

To regulate the distance in "height" and "width" between the graphs you need to control the parameter mai inside the command par:

par(mfrow=c(2,2), mai = c(0.3,0.3,0.3,0.3))
barplot(1:4) 
barplot(1:4)
barplot(1:4)
barplot(1:4)

If you want to control the margins off the chart, then you need to change the parameters oma:

par(mfrow=c(2,2), mai = c(0.3,0.3,0.3,0.3), oma = rep(0.1,4))
barplot(1:4) 
barplot(1:4)
barplot(1:4)
barplot(1:4)

  • With this command I am not able to insert the title of the y-axis. The ylab="test" command does not seem to work.

  • Do you want to put the title on the y-axis, or the title on the axis of each graph? If it is on each chart, there is the usual way. If it’s a title on the y-axis overall, here goes the mtext, if I’m not mistaken

  • Thank you. I’ll try.

2

I don’t know if this solution I’m going to suggest to you is exactly the solution to your problem. The way you exposed the problem the idea would be to approximate the graphics made with R Base. Meanwhile if your chart fits the following situation:

  1. there is a categorical variable (or group) that separates the data;
  2. want to make a barplot for each category;

in which case you could use the facets of ggplot2 which give a better presentation to the graph and a consistency in presentation. In the following chart I will create a dummy data set and a variable for the category:

library(ggplot2)
data("diamonds")
ggplot(data=diamonds, aes(x = clarity)) + 
  geom_bar() + 
  facet_wrap(~cut)

inserir a descrição da imagem aqui

Here I am making a bar chart with respect to the clarity of the diamonds, but making a bar chart for each cutting category. See the consistency of the presentation: category names go at the top of the charts and scales are consistent across the charts.

  • Thanks for the help.

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