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Facet_grid and Facet_wrap

ramblings on using ggplot
How to create wonderful visualizations in R like the below with multiple panel plots?
Facetting - can be consider as a method to create multiple panel plots based on splitting attributes which we decide.
Using facet_grid
ggplot(gapminder, aes(x=continent, y=gdpPercap))
+ geom_bar(stat = 'identity', fill='forest green')
+ facet_wrap(~year)
Using facet_wrap
ggplot(gapminder, aes(x=pop)) + geom_density() +
facet_wrap(~year) + scale_x_log10()
Main difference I noticed was:
*facet_wrap* was working only for a single varaibles, but to create a multple plot in two dimension we had to used *facet-grid*
Dr Ebin Sir's tidverse tutorials