I cannot find anything in documentation here.
Vstem <- Venn(StemCell)
Vstem3 <- Vstem[, c("OCT4", "SOX2", "NANOG")]
tl <- "masi"
plot(Vstem3, doWeights = TRUE, type = "circles")
plot(..., main = tl)
plot(..., title = tl)
plt <- plot(...); title(plt, tl)
user20650 answer in comments summarised here. Try (1-2) and choose what fits best.
The plot method is based on the grid package so the normal base R plot approaches to add a title won't work. Looking at the arguments of
args(Vennerable:::plotVenn), there doesn't seem a way to add a title and unhelpfully the plots do not return a grid object. So you can just draw a title on the plot window with the following
grid.text("masi", y=0.9, gp=gpar(col="red", cex=2))
As an alternative method, you could grab the grob and then use
grid.arrange to plot the title
gridExtra::grid.arrange(grid::grid.grabExpr(plot(Vstem3, doWeights = TRUE, type = "circles")), top="masi")
grid.arrange way adds the title as a separate grob, and then they are arranged in two rows. So when resizing the graphics window, it still appears above the plot. This won't be true when drawing straight on the window (as in the first version).
Note: you do not need to use
gridExtra, you could do this in grid.
Fig. 1 Output from (1), Fig. 2 Output from (2)
I think (1) could be better with more adjustments, but now (2) is better.