Hi
Is it possible to filter ranges by imposing condition on name field.  I am
using the IRanges vignette example below:

Require(IRanges)
ir1 <- IRanges(start = 1:10, width = 10:1)
ir2 <- IRanges(start = 1:10, end = 11)
ir3 <- IRanges(end = 11, width = 10:1)
identical(ir1, ir2) & identical(ir2, ir3)
ir <- IRanges(c(1, 8, 14, 15, 19, 34, 40),
  width = c(12, 6, 6, 15, 6, 2, 7))

values <- rnorm(length(ir))
rd <- RangedData(ir, name = letters[seq_len(length(ir))], values)
rd
1> rd
RangedData with 7 rows and 2 value columns across 1 space
        space    ranges |                 name             values
  <character> <IRanges> |     <character>  <numeric>
1           1        [ 1, 12] |                a            -0.8204717
2           1        [ 8, 13] |                b            -0.2419617
3           1        [14, 19] |               c           -0.7747140
4           1        [15, 29] |               d           -0.1103875
5           1        [19, 24] |               e           -0.2945884
6           1        [34, 35] |               f            1.8082479
7           1        [40, 46] |               g           -0.1854162


I have another list *toFind*:

toFind = c ('a', 'c', 'd', 'f')

Is it possible to find the correponding ranges? The output in this case
would be

1> output
RangedData with 4 rows and 2 value columns across 1 space
        space    ranges |                 name             values
  <character> <IRanges> |     <character>  <numeric>
1           1        [ 1, 12] |                a            -0.8204717
2           1        [14, 19] |               c           -0.7747140
3           1        [15, 29] |               d           -0.1103875
4           1        [34, 35] |               f            1.8082479


Thanks a lot.
Fahim




-- 
Fahim Mohammad
Bioinforformatics Lab
University of Louisville
Louisville, KY, USA
Ph:  +1-502-409-1167

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