Given a helix data frame, checks if helices are conflicting, duplicating, or
overlapping, and returns an array of numeric values, where 0 is FALSE and 1 is
TRUE. Values in between 0 and 1 occur when a single helix has multiple
basepairs with different values, the number observed in this case is the mean
of the basepair values within the helix. See details for exact definition of
the three types of events.
For isOverlappingHelix, a helix data structure against which
helix will be checked for overlap against.
Details
Helices of length greater than 1 are internally expanded into basepairs of
length 1, after which the following conditions are evaluated:
A conflicting basepair is one where at least one of its two positions
is used by either end of another basepair.
A duplicating basepair is one where both of its positions are used
by both ends of another basepair.
An overlapping basepair is one in helix where both of its
positions are used by both ends of another basepair in the query
structure.
In the case of conflicting and duplicating basepairs, for a
set of basepairs that satisfies this condition, the basepair situation
highest on the data frame will be exempt from the condition. i.e. Say 5
basepairs are all duplicates of each other, the top 1 will return FALSE,
while the bottom 4 will return TRUE. This assumes some significant meaning
to the ordering of rows prior to using this function. This is to be used
with which to filter out basepairs that satisfy these conditions,
leaving a set of basepairs free of these events.
If the original input had helices greater than length 1, then after applying
all of the above, TRUE is treated as 1, FALSE as 0, and the average of values
from each basepair is taken as the value for the helix in question.
Value
Returns an array of numerics corresponding to each row of helix, giving
the average conditional status of the helix, where 0 signifying all basepairs
are FALSE, and 1 where all basepairs are TRUE.
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> library(R4RNA)
Loading required package: Biostrings
Loading required package: BiocGenerics
Loading required package: parallel
Attaching package: 'BiocGenerics'
The following objects are masked from 'package:parallel':
clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
clusterExport, clusterMap, parApply, parCapply, parLapply,
parLapplyLB, parRapply, parSapply, parSapplyLB
The following objects are masked from 'package:stats':
IQR, mad, xtabs
The following objects are masked from 'package:base':
Filter, Find, Map, Position, Reduce, anyDuplicated, append,
as.data.frame, cbind, colnames, do.call, duplicated, eval, evalq,
get, grep, grepl, intersect, is.unsorted, lapply, lengths, mapply,
match, mget, order, paste, pmax, pmax.int, pmin, pmin.int, rank,
rbind, rownames, sapply, setdiff, sort, table, tapply, union,
unique, unsplit
Loading required package: S4Vectors
Loading required package: stats4
Attaching package: 'S4Vectors'
The following objects are masked from 'package:base':
colMeans, colSums, expand.grid, rowMeans, rowSums
Loading required package: IRanges
Loading required package: XVector
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/R4RNA/logicalHelix.Rd_%03d_medium.png", width=480, height=480)
> ### Name: Helix Type Filters
> ### Title: Logical filters of helix by type
> ### Aliases: isConflictingHelix isDuplicatingHelix isOverlappingHelix
> ### Keywords: logic
>
> ### ** Examples
>
> data(helix)
>
> conflicting <- isConflictingHelix(helix)
> duplicating <- isDuplicatingHelix(helix)
>
> # Nonsensical covariation plot
> plotCovariance(fasta, helix)
>
> # Plot nonconflicting helices
> plotCovariance(fasta, helix[(!conflicting & !duplicating), ])
>
> # Similar result
> plotCovariance(fasta, helix, conflict.col = "lightgrey")
>
>
>
>
>
> dev.off()
null device
1
>