Changing rastral size causing system collisions

[Christian_R]

@composerdoh

I’m curious why Dorico is not avoiding this collision and is allowing such an obvious clash of staves/systems- there must be something I’m missing.

Hi @composerdoh, what is probably happening is the “circular problem” that is well known by the developers.

In this post you will find more informations about the background of it, and how to correct this:

„Resolve the collision..” strange behavior

The problem here is that Dorico does not know exactly how much vertical space the music is going to occupy until it has cast it off, but it cannot know exactly how to cast it off until it knows the height of the music, so this is an inherently circular problem. When the 'Automatically resolve collisions between adjacent staves and systems’ option is on, then Dorico makes an estimate of what it thinks the height of the system(s) is likely to be prior to casting it off, so that it can decide when…

If you would like to post your Dorico file here, I am sure someone can give further advice about the best strategy on how to correct this (being a strategically inserted Frame Break probably the best/fastest solution, but there may be other ways, depending on the context)