subset.mpcross: Subset mpcross object
In mpMap: Multi-parent RIL genetic analysis

Description Usage Arguments Value Note See Also Examples

Reduces an mpcross object down to a specified set of chromosomes, markers and/or lines

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  ## S3 method for class 'mpcross'
 subset(x, chr = NULL, markers = NULL,
    lines = NULL, ...)

`x`	Object of class `mpcross`
`chr`	Selected chromosomes TO KEEP. Default is all
`markers`	Selected markers TO KEEP. Default is all
`lines`	Selected lines TO KEEP. Default is all
`...`	Additional arguments

The original object with chromosomes/lines/markers removed which are not listed in the arguments.

Chromosomes can be input either as the character names of chromosomes or the index of the chromosomes in the map. Markers can be input as character names or the index in the matrix x$finals. Lines can be input as either character values (matching the rownames of x$finals) or indices of rows in that matrix.

mpcross.object

map <- sim.map(len=rep(100, 2), n.mar=11, include.x=FALSE, eq.spacing=TRUE)
ped <- sim.mpped(4, 1, 500, 6, 1)
sim.dat <- sim.mpcross(map=map, pedigree=ped, qtl=matrix(data=c(1, 10, .4, 0, 0, 0, 1, 70, 0, .35, 0, 0), nrow=2, ncol=6, byrow=TRUE), seed=1)
sim.dat
red.dat <- subset(sim.dat, chr=1, lines=1:50)
red.dat