Does ggplot() calculates the scales of the axes automatically after aes() is specified. Particularly for Avg_life_expec variable, the values are continuous . How this is done in ggplot()
The scales are calculated automatically, however, the implementation details can be complicated to explain. I would recommend you to read this Stack Overflow thread:
I am not a programmer or developer & I am not interested in hardcore coding. I just want to learn the basics & see how the code works.
HENCE, is it suffice to know how to use the package to get a task done . Here, like you told, THE scales are calculated automatically .