Pull genotype probabilities for a particular position
Pull out the genotype probabilities for a particular position (by name)
pull_genoprobpos(genoprobs, map = NULL, chr = NULL, pos = NULL, marker = NULL)
genoprobs |
Genotype probabilities as calculated by
|
map |
A map object: a list (corresponding to chromosomes) of
vectors of marker positions. Can also be a snpinfo object (data
frame with columns |
chr |
A chromosome ID |
pos |
A numeric position |
marker |
A single character string with the name of the position to pull out. |
Provide either a marker/pseudomarker name (with the argument marker
)
or all of map
, chr
, and pos
.
A matrix of genotype probabilities for the specified position.
iron <- read_cross2(system.file("extdata", "iron.zip", package="qtl2")) gmap <- insert_pseudomarkers(iron$gmap, step=1) pr <- calc_genoprob(iron, gmap, error_prob=0.002) pmar <- find_marker(gmap, 8, 40) pr_8_40 <- pull_genoprobpos(pr, pmar) pr_8_40_alt <- pull_genoprobpos(pr, gmap, 8, 40)
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