In the bioconductor tutorial for gviz I have noticed that sometimes the name of a track disappears from the plot if the track is small. Is it possible to set the minum height of the track, so that the name of the track does not disappear (is independent of the track height) ... or is it possible to set the minimum size of the legend size?

**CpG is not there:**

**CpG is there:**

My bad, the parameter is called size:

​data(cyp2b10)
grTrack <- GeneRegionTrack(cyp2b10, genome="mm9")
dat <- matrix(runif(400), nrow=4)
dtTrack <- DataTrack(start=seq(min(start(grTrack)),max(end(grTrack)), len=100), width=10, data=dat, chromosome=chromosome(grTrack),  name="random data", genome="mm9")
plotTracks(list(GenomeAxisTrack(), grTrack, dtTrack))
## Change height for the DataTrack
displayPars(dtTrack) <- list(size=10)
plotTracks(list(GenomeAxisTrack(), grTrack, dtTrack))

Florian

Hi Tonja,

there are both options. You can either set the height parameter for the track, or play with the cex.title parameter. Please note that the former gives the relative size of the track in relation to the height settings of all the other tracks. I.e., if you have three tracks with height settings 1, 2, and 3, their respective relative heights will be 1/6, 2/6 and 3/6 of the available vertical space.

Florian