On 10/11/2010 12:12 AM, Michael Bedward wrote:
Hello Sachin,
You have a "ragged array" and you can easily store this as a list of vectors...
x<- list(c(0,0,1,1), c(1,3,5), 4, c(7, -1, 8, 9, 10, 6))
The only gotcha with this is that you will then need to use double
brackets for the first index when retrieving values (single brackets
will return a vector wrapped in a list)...
e.g. x[[2]][3] gives 5
An alternative syntax that is sometimes easier to work with is
x[[c(2,3)]]
This needs the double brackets; x[c(2,3)] would be a list holding items
2 and 3 from x, i.e. list(c(1,3,5), 4).
Duncan Murdoch
You can query vector length with double brackets...
e.g. length( x[[2]] ) gives 3
Hope this helps,
Michael
On 10 November 2010 16:00,<sachinthaka.abeyward...@allianz.com.au> wrote:
Hi Erik,
Thanks for replying. Only problem with that is that each row has 5 elements
(or 5 columns). I want varying number of columns as shown in my example.
x<- 0 0 1 1
1 3 5
4
7 -1 8 9
10 6
Regards,
Sachin
p.s. sorry about corporate notice.
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