R Programming/Grammar of graphics
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Hadley Wickham has developped the ggplot2, a graphical library designed according to the principles of the Grammar of Graphics.
Plotting a function
[edit | edit source]We use qplot()
with the option stat=function
:
# Plot the quadratic function
square <- function(x){
x^2
}
mode(square)
qplot(c(0, 2), stat = "function", fun = square, geom = "line")
Here is another example with the sinus function :
# plot the sinus functon
qplot(c(-10, 10), stat = "function", fun = sin, geom = "line")
Bibliography
[edit | edit source]- Leland Wilkinson, The Grammar of Graphics (Statistics and Computing), Springer, 2005
- Hadley Wickham, ggplot2: Elegant Graphics for Data Analysis, Use R!, Springer, 2009