R generate 2D histogram from raw data

Question

I have some raw data in 2D, x, y as given below. I want to generate a 2D histogram from the data. Typically, dividing the x,y values into bins of size 0.5, and count the number

Answer 1

If you want it with a 2d contour, you can also use the package ggplot2. Some example code is shown in this question:

gradient breaks in a ggplot stat_bin2d plot Adjusted slightly:

x <- rnorm(10000)+5
y <- rnorm(10000)+5
df <- data.frame(x,y)
require(ggplot2)
p <- ggplot(df, aes(x, y)) 
p <- p + stat_bin2d(bins = 20)
p

Here's the output of the code above: