R help - Mar 2003 - how to show a section of a matrix neatly (or row by row) that satisfies some condition

Hi all, 

I want to show the rows of a matrix (100x3) of which some of its elements
satisfy a certain condition. In particular, how can I display the 2 rows of my
matrix one after the
other and not all all elements of column 1 first, then column 2 and so on. See
the following.
> finest[finest[,1] > 10^3] 
[1] 4.960632e+13 3.612619e+04 7.668204e+12 1.001911e+04 8.886153e-01
[6] 6.130777e-01
> dim(finest) 
[1] 100   3


Many thanks in advance. 

Edmond

I think you need a comma after "10^3", e.g.,:

tst <- array(1:9, dim=c(3,3))
tst[tst[,1]>1,]

Spencer Graves

Edmond Ng wrote:
> Hi all, 
> 
> I want to show the rows of a matrix (100x3) of which some of its elements
satisfy a certain condition. In particular, how can I display the 2 rows of my
matrix one after the
> other and not all all elements of column 1 first, then column 2 and so on.
See the following.
> 
> 
>>finest[finest[,1] > 10^3] 
> 
> [1] 4.960632e+13 3.612619e+04 7.668204e+12 1.001911e+04 8.886153e-01
> [6] 6.130777e-01
> 
> 
>>dim(finest) 
> 
> [1] 100   3
> 
> 
> Many thanks in advance. 
> 
> Edmond
> 
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