Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
plotmatrix with aesthetics
plotmatrix2 <- function (data, mapping = aes())
{
grid <- expand.grid(x = 1:ncol(data), y = 1:ncol(data))
grid <- subset(grid, x != y)
all <- do.call("rbind", lapply(1:nrow(grid), function(i) {
xcol <- grid[i, "x"]
ycol <- grid[i, "y"]
data.frame(xvar = names(data)[ycol], yvar = names(data)[xcol],
x = data[, xcol], y = data[, ycol], data)
}))
all$xvar <- factor(all$xvar, levels = names(data))
all$yvar <- factor(all$yvar, levels = names(data))
densities <- do.call("rbind", lapply(1:ncol(data), function(i) {
data.frame(xvar = names(data)[i], yvar = names(data)[i],
x = data[, i])
}))
mapping <- defaults(mapping, aes_string(x = "x", y = "y"))
class(mapping) <- "uneval"
ggplot(all) + facet_grid(xvar ~ yvar, scales = "free") +
geom_point(mapping, na.rm = TRUE) + stat_density(aes(x = x,
y = ..scaled.. * diff(range(x)) + min(x)), data = densities,
position = "identity", colour = "grey20", geom = "line")
}
@low-decarie

This comment has been minimized.

Copy link

low-decarie commented Apr 30, 2012

Where does the "defaults" function come from?

@low-decarie

This comment has been minimized.

Copy link

low-decarie commented Apr 30, 2012

I found it in plyr. Sorry!

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.