Order the axis

[Frédéricdh]

How can i reach the this order:

Where u have

<=03 and <=07, who are two sums on weight with week < actually week -4 and weight with week <actually week

The title of the week are expression like "<= Actually Week -4", how can I sort it with an expression?

[Lisa_P]

You could use match or mixmatch functions to order these, see help for more details.