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Modifies track contents

Source: R/track-modify.R
gtrack.modify.Rd

Modifies 'Dense' track contents.

Usage

gtrack.modify(track = NULL, expr = NULL, intervals = NULL)

Arguments

track

track name

expr

track expression

intervals

genomic scope for which track is modified

Value

None.

Details

This function modifies the contents of a 'Dense' track by the values of 'expr'. 'intervals' argument controls which portion of the track is modified. The iterator policy is set internally to the bin size of the track.

See also

gtrack.create, gtrack.rm

Examples


gdb.init_examples()
intervs <- gintervals(1, 300, 800)
gextract("dense_track", intervs)
#>    chrom start end dense_track intervalID
#> 1   chr1   300 350        0.16          1
#> 2   chr1   350 400        0.16          1
#> 3   chr1   400 450        0.16          1
#> 4   chr1   450 500        0.06          1
#> 5   chr1   500 550        0.06          1
#> 6   chr1   550 600        0.02          1
#> 7   chr1   600 650        0.04          1
#> 8   chr1   650 700        0.00          1
#> 9   chr1   700 750        0.00          1
#> 10  chr1   750 800        0.00          1
gtrack.modify("dense_track", "dense_track * 2", intervs)
gextract("dense_track", intervs)
#>    chrom start end dense_track intervalID
#> 1   chr1   300 350        0.32          1
#> 2   chr1   350 400        0.32          1
#> 3   chr1   400 450        0.32          1
#> 4   chr1   450 500        0.12          1
#> 5   chr1   500 550        0.12          1
#> 6   chr1   550 600        0.04          1
#> 7   chr1   600 650        0.08          1
#> 8   chr1   650 700        0.00          1
#> 9   chr1   700 750        0.00          1
#> 10  chr1   750 800        0.00          1
gtrack.modify("dense_track", "dense_track / 2", intervs)