[R] How to avoid rounding of matrix elements?

[Don MacQueen]

It's not being rounded, as this example will show:

>  x <- 0.1234567898765
>  x
[1] 0.1234568
>  print(x,digits=15)
[1] 0.1234567898765

It is being printed, or displayed, with fewer digits. But the 
underlying value has not changed.

-Don

At 6:57 PM -0500 1/6/05, Ulas Karaoz wrote:
>Hi all R-users,
>If I have a matrix with numeric elements as follows, the values are 
>rounded when I try to refer to a specifici element using [], the 
>value is rounded.
>The same thing happens if the matrix is read from a file, the values 
>are stored to the correct precision but then when I try to refer to 
>a specific element (such as using [], it is rounded.
>
>How do I avoid this rounding?
>  >mdat<-matrix(c(0.0187972950,0.4446208550,1.0000000000,0.0003204380,0.0105002420,1.1087556380,0.0742164230,0.0362898240), 
>nrow = 2, ncol=4)
>>  mdat
>           [,1]        [,2]       [,3]       [,4]
>[1,] 0.01879729 1.000000000 0.01050024 0.07421642
>[2,] 0.44462085 0.000320438 1.10875564 0.03628982
>
>Thanks.
>
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-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA