Alternating above/below colorbar labels

[jypeter]

@doutriaux1 Watching the colorbar of #339 has reminded me of a question I got a few years back. Is there a way to ask vcs to draw the labels alternatively above and below the colorbar? It means that the colorbar will need some more vertical space, but it can help when the labels collide (because they use many digits/characters, or the text size is big, or there are many labels)

In the example above, this means that you would get [-0.1, -0.06, -0.02, ...] above the bar and [-0.08, -0.04, ...] below

[doutriaux1]

@jypeter not at the moment. But it's a good idea. I'm marking this as enhancement.