Is there a canonical means to apply a function
over multiple arrays simultaneously? For example,
if I wanted to plot each line with a different color?
Or is a for loop conversion my best option?
x <- seq(0, 8, by = 2)
y <- matrix(1:15, nrow = 5, byrow = TRUE)
my.colors <- heat.colors(3)
drawLines <- function(row) {
lines(x, row) # want corresponding 'my.colors' here
}
plotData <- function(x, y) {
plot(x, type='n', axes = FALSE,
xlim = c(min(x), max(x)),
ylim = c(0, max(y)));
box();
axis(1, min(x):max(x))
axis(2, seq(0, max(y), by = 5))
axis(3, labels = FALSE)
axis(4, labels = FALSE)
apply(y, 1, drawLines)
}
plotData(x, t(y))
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