repel text labels in diagonalNetwork

[hammao]

Hi,
Is it possible to add some thing like "repel" to the text so labels don't plot on each other ?

i'm using "diagonalNetwork(as.radialNetwork(hclust)" and most of the labels overlap.

Thank You

[hammao]

i notice the specifying the "height" helps but it changes the size of the plot. a function that simply repels the text from each other will be super helpful. Again, thanks for the package, it very useful for my research work in taxonomy.