Remove intensities from chromatographic data
Source:R/methods-Chromatogram.R
, R/methods-MChromatograms.R
, R/methods-XChromatogram.R
removeIntensity-Chromatogram.Rd
removeIntensities
allows to remove intensities from chromatographic data
matching certain conditions (depending on parameter which
). The
intensities are actually not removed but replaced with NA_real_
. To
actually remove the intensities (and the associated retention times)
use clean()
afterwards.
Parameter which
allows to specify which intensities should be replaced by
NA_real_
. By default (which = "below_threshod"
intensities below
threshold
are removed. If x
is a XChromatogram
or XChromatograms
object (and hence provides also chromatographic peak definitions within the
object) which = "outside_chromPeak"
can be selected which removes any
intensity which is outside the boundaries of identified chromatographic
peak(s) in the chromatographic data.
Note that filterIntensity()
might be a better approach to subset/filter
chromatographic data.
Usage
# S4 method for class 'Chromatogram'
removeIntensity(object, which = "below_threshold", threshold = 0)
# S4 method for class 'MChromatograms'
removeIntensity(object, which = "below_threshold", threshold = 0)
# S4 method for class 'XChromatogram'
removeIntensity(
object,
which = c("below_threshold", "outside_chromPeak"),
threshold = 0
)
Arguments
- object
an object representing chromatographic data. Can be a
Chromatogram()
,MChromatograms()
,XChromatogram()
orXChromatograms()
object.- which
character(1)
defining the condition to remove intensities. See description for details and options.- threshold
numeric(1)
defining the threshold below which intensities are removed (ifwhich = "below_threshold"
).