Double X-axis code

I have created a graph with the Xticklabels of 1,3,5,7,9,1,3,5,7,9.

These ticks represent blocks 1,3,5,7,9, for both of days 1 and 2 of an experiment. I am looking to create a label for each of these sets of blocks separately, with a label of "Day 1" and "Day 2" under each section. If possible I would like to have a line in between in order to visually separate these days. I would then need a centered line below simply saying "Response Blocks". I have been able to do this using the xlabel function and inserting many spaces in between the Days, but I want to be able to keep this spacing consistent and relative to the graph if I decide to alter the size of the graph.

Any Ideas?

[Oleg Komarov]

Post some code or upload a sketch on tinypic and post it here with <<url>>

Answer 1

[Sean de Wolski]

This could be done using annotation and text though it won't be fun

doc annotate
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