marker_select | R Documentation |
Functions for manipulating markers attached to ped
objects.
selectMarkers(x, markers = NULL, chroms = NULL, fromPos = NULL, toPos = NULL)
getMarkers(x, markers = NULL, chroms = NULL, fromPos = NULL, toPos = NULL)
removeMarkers(x, markers = NULL, chroms = NULL, fromPos = NULL, toPos = NULL)
whichMarkers(x, markers = NULL, chroms = NULL, fromPos = NULL, toPos = NULL)
x |
A |
markers |
Either a character vector (with marker names), a numeric
vector (with marker indices), a logical (of length |
chroms |
A vector of chromosome names, or NULL |
fromPos |
A single number or NULL |
toPos |
A single number or NULL |
If markers
consists of negative integers, it will be converted to its
complement within 1:nMarkers(x)
.
The return values of these functions are:
selectMarkers()
: an object identical to x
, but where only the
indicated markers are kept
removeMarkers()
: an object identical to x
, but where the indicated
markers are removed
getMarkers()
: a list of marker
objects. Note: If x
is a list of
pedigrees, the marker objects attached to the first component will be
returned.
whichMarkers()
: an integer vector with indices of the indicated
markers. If x
is a list of pedigrees an error is raised unless
whichMarkers()
gives the same result for all components.
setMarkers()
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