How can I make a histogram in RStudio with the frequency on the y-axis and on the x-axis pre-defined non-uniform intervals, for example: 0-50, 50-150, 150-500, 500-2000.
I have hypothetical data, as I would not like to share my original data.
data <- c(1,1.2,40,1000,36.66,400.55,100,99,2,1500,333.45,25,125.66,141,5,87,123.2,61,93,85,40,205,208.9)
Set the breaks you want with the breaks argument in the hist function.
hist(data, breaks=c(0, 50, 150, 500, 2000), freq=TRUE)
If you want even bar widths you need to put your data into a categorical format rather than continuous. You could achieve this by doing the following.
# Cut your data into categories using your breaks
data <- cut(data,
breaks=c(0, 50, 150, 500, 2000),
labels=c('0-50', '50-150', '150-500', '500-2000'))
# Make a data table (i.e. a frequency count)
data <- table(data)
# Plot with `barplot`
barplot(data)
