plot.errorlod {qtl} | R Documentation |
Plot a grid of the LOD scores indicating which genotypes are likely to be in error.
plot.errorlod(x, chr, ind, breaks=c(-Inf,2,3,4.5,Inf), col=c("white","gray85","hotpink","purple3"), alternate.chrid=FALSE, ...)
x |
An object of class cross . See
read.cross for details. |
chr |
The chromosomes for which the error LOD scores should be plotted. |
ind |
Indicates the individuals for which the error LOD scores should be plotted. |
breaks |
A set of breakpoints for the colors; must give one more breakpoint than color. Intervals are open on the left and closed on the right, except for the lowest interval. |
col |
A vector of colors to appear in the image. |
alternate.chrid |
If TRUE and more than one chromosome is plotted, alternate the placement of chromosome axis labels, so that they may be more easily distinguished. |
... |
Ignored at this point. |
Uses image
to plot a grid with different shades
of pixels to indicate which genotypes are likely to be in error.
Darker pixels have higher error LOD scores: LOD <= 2 in white; 2 < LOD <= 3 in gray; 3 < LOD <= 4.5 in pink; LOD > 4.5 in purple.
None.
Karl W Broman, kbroman@biostat.wisc.edu
Lincoln, S. E. and Lander, E. S. (1992) Systematic detection of errors in genetic linkage data. Genomics 14, 604–610.
calc.errorlod
,
top.errorlod
, image
data(hyper) # Calculate error LOD scores hyper <- calc.errorlod(hyper,error.prob=0.01) # plot the error LOD scores; print those above a specified cutoff plot.errorlod(hyper) plot.errorlod(hyper,chr=1)