seq
Difference between a Seq and a List in Scala
In Java terms, Scala’s Seq would be Java’s List, and Scala’s List would be Java’s LinkedList. Note that Seq is a trait, which is similar to Java’s interface, but with the equivalent of up-and-coming defender methods. Scala’s List is an abstract class that is extended by Nil and ::, which are the concrete implementations of … Read more
Generate an incrementally increasing sequence like 112123123412345
Use sequence: > sequence(1:5) [1] 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
Select every other element from a vector
remove[c(TRUE, FALSE)] will do the trick. How it works? If logical vectors are used for indexing in R, their values are recycled if the index vector is shorter than the vector containing the values. Here, the vector remove contains ten values. If the index vector c(TRUE, FALSE) is used, the actual command is: remove[c(TRUE, FALSE, … Read more
Create sequence of repeated values, in sequence?
You missed the each= argument to rep(): R> n <- 3 R> rep(1:5, each=n) [1] 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 R> so your example can be done with a simple R> rep(1:8, each=20)
Variables in bash seq replacement ({1..10}) [duplicate]
In bash, brace expansion happens before variable expansion, so this is not directly possible. Instead, use an arithmetic for loop: start=1 end=10 for ((i=start; i<=end; i++)) do echo “i: $i” done OUTPUT i: 1 i: 2 i: 3 i: 4 i: 5 i: 6 i: 7 i: 8 i: 9 i: 10