method to create a uniform grid on a variable
generates an evenly spaced grid given an input vector, matrix, or data.frame which has size length.out.
uniformGrid(x, length.out)
x |
a vector, matrix, or |
length.out |
an integer giving the length of the grid. |
an object of the same type as x, with length.out or fewer unique values.
for unordered factors and characters, if length.out < length(unique(x)) length.out is set to length(unique(x)). if x is a data.frame and this is true of some columns but not others, there will be a warning.
data = data.frame( w = seq(0, 1, length.out = 5), x = factor(letters[1:5]), y = ordered(1:5), z = 1:5 ) lapply(data, uniformGrid, length.out = 5)
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