A vector's resolution: resolution
Mix.install([
{:giggly, path: Path.join(__DIR__, "..")},
{:kino, "~> 0.19"}
])About this notebook
This notebook follows the examples on ggplot2's reference page for
resolution(), in the order the page
gives them. Each example shows ggplot2's code first and then Giggly's. An example Giggly cannot
draw yet keeps its ggplot2 code and names what it is waiting for, so the page is also a list of
what remains.
resolution() gives the smallest non-zero distance between adjacent values of a numeric vector,
counting 0 among the values unless zero = FALSE. A vector with a single unique value, or whose
differences are all below a small tolerance, has resolution 1, and so has an integer vector,
which is taken to be discrete; with discrete = TRUE, so has a vector mapped with a discrete
scale. Not in Giggly yet: resolution().
Counting zero among the values
resolution(1:10)
resolution((1:10) - 0.5)
resolution((1:10) - 0.5, FALSE)
1:10 is an integer vector, so its resolution is 1. Shifted down by a half its values are
numbers 1 apart, but 0 counts among them, half a step below the first, so the resolution is 0.5;
with zero = FALSE it is 1. Not in Giggly yet: resolution().
Numbers and integers
# Note the difference between numeric and integer vectors
resolution(c(2, 10, 20, 50))
resolution(c(2L, 10L, 20L, 50L))
Counting 0, the closest values of c(2, 10, 20, 50) are 0 and 2, so its resolution is 2; the same
values as integers have resolution 1. Not in Giggly yet: resolution().
