Trying to return a specified number of characters from a gene sequence in R

Question

I have a DNA sequence like: cgtcgctgtttgtcaaagtcg....

that is possibly 1000+ letters long.

However, I only want to look at letters 5 to 200, for example, and to define this subset of the string as a new object.

I tried looking at the nchar function, but haven't found something that would do this.

Answer 1

Try

substr("cgtcgctgtttgtcaa[...]", 5, 200)

See substr().