Barchart commands for R software

Question

How do I use some commands like font.main, col.main inside the command barchart package lattice. I’m trying to use these commands and they’re not working.

Answer 1

The arguments font.main and col.main are not used within the function lattice::barchart. They are reserved for the standard graphics of R. However, it is possible to change the title characteristics of a package chart lattice using a list of options.

For example, when rotating the command

barchart(VADeaths, main = list(label = "Teste", col = "Pink", font = 3))

i get the following chart:

Just set a list for the parameter main with the title (label), color (col) and type of source (font) to change the desired parameters in the chart.

Original answer, before the AP comment

font.main and col.main are not arguments to be used within the command barplot. They are graphical parameters and should be used within the command par, responsible for these configurations.

For example, see what happens when you run the command below:

barplot(VADeaths, main="Death Rates in Virginia (1940)")

But I can set other parameters for the source if I run the function par formerly:

par(font.main=3, col.main="pink")
barplot(VADeaths, main="Death Rates in Virginia (1940)")

I recommend testing different options font.main to see which one you like best or search the internet for a list of them.

To see what other customization options are possible for graphics, type ?par on the console of R.

The advantage of using the function par for that is that your settings will be worth to bar charts, histograms, boxplots and everything else R is able to produce with its standard graphics.