039-merge.md

This demo shows you how to merge the source and output blocks in markdown output. Note knitr puts R source and output in separate blocks by default.

a = 1
a

## [1] 1

b = 1:10
write(b, "")

## 1 2 3 4 5
## 6 7 8 9 10

See if the chunk option collapse works:

a = 1
a
## [1] 1
b = 1:10
write(b, "")
## 1 2 3 4 5
## 6 7 8 9 10

Source and output lived together happily ever in knitr.