[dave_m]

Sorry about this!

Currently tick and tick label intervals are always applied starting at zero rather than the beginning of the data or axis range. This means that "every other" will always be evens, and "every 100" will always be multiples of 100 (not 150, 250, etc). We have a feature request open on this in our development database and I've added your example to it; for the time being at least I'm sorry to disappoint.