[R] How to define new matrix based on an elementary row operation in a single step?

[Cuckovic Paik]

Thanks for respose. 

you still used two steps to get the new matrix tst2: 
step 1: tst2 = tst
step 2: perform the row operation in tst2.

Can you do this in a single step?


A similar example: 
> tst
     [,1] [,2] [,3] [,4]
[1,]    1    5    9   13
[2,]    2    6   10   14
[3,]    3    7   11   15
[4,]    4    8   12   16
# I define a new matrix by deleting the first row and the first column of
matrix tst using following single step:
> New.tst=tst[-1,-1]
> New.tst
     [,1] [,2] [,3]
[1,]    6   10   14
[2,]    7   11   15
[3,]    8   12   16
# the original matrix tst is still .
> tst
     [,1] [,2] [,3] [,4]
[1,]    1    5    9   13
[2,]    2    6   10   14
[3,]    3    7   11   15
[4,]    4    8   12   16




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