Changing spacing between notes a lot

[nokel81]

Hello I was wondering if there is a way to change the spacing between notes
many times in a staff. I have tried using \newSpacingSection and \override
Score.SpacingSpanner.spacing-increment but it has not worked.

What I would like to do is to make something like this.
<http://lilypond.1069038.n5.nabble.com/file/t5510/spacing.png> 



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