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Saturday, 26 November 2016

14 Matrix functions in r languge

a

matrix(c(7,89,9,9,4,2),nrow=2,ncol=3)


t(a)

v<-1:5
dim(v)

dim(t(v))

a[1,3]
a[,2]
a[1,]
----------
a<-matrix(seq(1,21,1),nrow=7)

a[c(2,5),]
---
diag(5)
---
a*2
-
a**2
a+b
---
dim(b)[1]
--nrow(b)
ncol(b)
---
all(a==B)
--

B[4,1] <-100
----
a==b




 

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