gviz to plot some GWAS data and my
DataTrack is showing the association p-values of SNPs for a certain genomic region, which is a pretty basic dot plot. I would like to show certain significance levels on my plot, and add several horizontal lines with different colors (or at least different colors than my dots...). I tried
abline parameter in the
DataTrack function but didn't really help. Is there another way to add horizontal lines?
Also I want to add some horizontal grid lines to my
DataTrack which is relatively easy to do by setting
grid=T, v=0, h=10 , where the integer controls the number of lines, but how can I control the coordinates of these lines?