Creating A Grouped Barplot In Base R
In this method of creating a grouped barplot, the user needs just use the base functionalities of the R language. The user needs to first modify the data used to create the bar charts accordingly into different groups and then has to call the barplot() function with the required parameters passed into it to create the barplot of the given data respectively in the R programming language.
Barplot() function: This function is used to create a bar plot with vertical or horizontal bars.
Syntax: barplot(height, beside = FALSE,… )
Parameters:
- height: either a vector or matrix of values describing the bars which make up the plot. I
- beside: a logical value. If FALSE, the columns of height are portrayed as stacked bars, and if TRUE the columns are portrayed as juxtaposed bars.
- …: arguments to be passed to/from other methods.
Example: In this example, we will be creating the grouped barplot of four different groups in the base R.
R
# Create data gfg <- data.frame(x = c(7,9,8,1,4,6,5,9,6,4,8,5), grp = rep(c("group 1", "group 2", "group 3","group 4"), each = 3), subgroup = LETTERS[1:3]) # Modifying data gfg <- reshape(gfg,idvar = "subgroup", timevar = "grp", direction = "wide") row.names(gfg) <- gfg$subgroup gfg <- gfg[ , 2:ncol(gfg)] colnames(gfg) <- c("group 1", "group 2", "group 3","group 4") gfg <- as.matrix(gfg) # Create grouped barplot barplot(height = gfg,beside = TRUE) |
Output:
How to Create a Grouped Barplot in R?
In this article, we will discuss how to create a grouped barplot in the R programming language.