Description Usage Arguments Value Author(s) See Also Examples
A method of class trigger
for genomewide Expression-trait QTL analysis. This function estimates the linkage statistic and parametric p-value for each gene expression to every locus in the genome.
1 2 | ## S4 method for signature 'trigger'
trigger.link(triggerobj, gender = NULL, norm = TRUE)
|
triggerobj |
An object of class |
gender |
Optional. When computing linkage statistics involving markers on sex chromosome, |
norm |
Logical. If |
An updated object of class trigger
containing slots:
stat |
A matrix of pair-wise likelihood ratio statistics for linkage analysis, with genes in rows and markers in columns. |
pvalue |
A matrix of parametric pvalues corresponding to statistics in the |
Use slot(triggerobj, "stat")
and slot(triggerobj, "pvalue")
to retrieve the values.
Lin S. Chen lschen.stat@gmail.com, Dipen P. Sangurdekar dps@genomics.princeton.edu and John D. Storey jstorey@princeton.edu
1 2 3 4 5 6 7 8 9 10 11 12 | ## Not run:
data(yeast)
attach(yeast)
triggerobj <- trigger.build(marker = marker, exp = exp,
marker.pos = marker.pos, exp.pos = exp.pos)
triggerobj <- trigger.link(triggerobj, gender = NULL, norm = TRUE)
plot(triggerobj,type = "link", cutoff = 1e-5)
stat = slot(triggerobj, "stat"); pvalue = slot(triggerobj, "pvalue")
detach(yeast)
## End(Not run)
|
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