
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Create Combination of Multiple Vectors in R
To create combination of multiple vectors, we can use expand.grid function. For example, if we have six vectors say x, y, z, a, b, and c then the combination of vectors can be created by using the command expand.grid(x,y,z,a,b,c).
Example
x1<-rpois(2,1) x2<-rpois(2,1) x3<-rpois(2,1) x4<-rpois(2,1) expand.grid(x1,x2,x3,x4)
Output
Var1 Var2 Var3 Var4 1 1 2 2 1 2 1 2 2 1 3 1 0 2 1 4 1 0 2 1 5 1 2 1 1 6 1 2 1 1 7 1 0 1 1 8 1 0 1 1 9 1 2 2 2 10 1 2 2 2 11 1 0 2 2 12 1 0 2 2 13 1 2 1 2 14 1 2 1 2 15 1 0 1 2 16 1 0 1 2
Example
y1<-rpois(2,2) y2<-rpois(2,2) y3<-rpois(2,2) y4<-rpois(2,2) y5<-rpois(2,2) expand.grid(y1,y2,y3,y4,y5)
Output
Var1 Var2 Var3 Var4 Var5 1 4 0 1 1 1 2 1 0 1 1 1 3 4 2 1 1 1 4 1 2 1 1 1 5 4 0 2 1 1 6 1 0 2 1 1 7 4 2 2 1 1 8 1 2 2 1 1 9 4 0 1 1 1 10 1 0 1 1 1 11 4 2 1 1 1 12 1 2 1 1 1 13 4 0 2 1 1 14 1 0 2 1 1 15 4 2 2 1 1 16 1 2 2 1 1 17 4 0 1 1 4 18 1 0 1 1 4 19 4 2 1 1 4 20 1 2 1 1 4 21 4 0 2 1 4 22 1 0 2 1 4 23 4 2 2 1 4 24 1 2 2 1 4 25 4 0 1 1 4 26 1 0 1 1 4 27 4 2 1 1 4 28 1 2 1 1 4 29 4 0 2 1 4 30 1 0 2 1 4 31 4 2 2 1 4 32 1 2 2 1 4
Example
z1<-sample(LETTERS[1:26],2) z2<-sample(LETTERS[1:26],2) z3<-sample(LETTERS[1:26],2) z4<-sample(LETTERS[1:26],2) z5<-sample(LETTERS[1:26],2) expand.grid(z1,z2,z3,z4,z5)
Output
Var1 Var2 Var3 Var4 Var5 1 Q K U S Q 2 I K U S Q 3 Q C U S Q 4 I C U S Q 5 Q K L S Q 6 I K L S Q 7 Q C L S Q 8 I C L S Q 9 Q K U T Q 10 I K U T Q 11 Q C U T Q 12 I C U T Q 13 Q K L T Q 14 I K L T Q 15 Q C L T Q 16 I C L T Q 17 Q K U S P 18 I K U S P 19 Q C U S P 20 I C U S P 21 Q K L S P 22 I K L S P 23 Q C L S P 24 I C L S P 25 Q K U T P 26 I K U T P 27 Q C U T P 28 I C U T P 29 Q K L T P 30 I K L T P 31 Q C L T P 32 I C L T P
Advertisements