A problem when using `make_time_cluster_data` code

[jhc691217]

Hello, @jwdink and @brockf
Thanks for your R package, this package has helped me a lot when I analysing my dataset 👍 :). But now I am facing a problem with make_time_cluster_data. I use this fomula to make time course analysis, but my dataset has three different levels in the "condition" column. These three different conditions are within subject variables. I want to analysis them in one time, but this fomula only decated two varibles, reported me the error like: The term 'conditionContext' was not found in your model. The terms in the model were: '(Intercept)', 'conditionControl', 'conditionNO_context'. If I divid my dataset into 2 subgroups, for each subgroup, only 2 condition remained, and make analysis for each group, this error will be disappeared. But I think this may cause Type Ⅱ error, because I analysised twice for one variable. I dont know how to solve this problem and I appreciate any feedback.

Thanks,
jhc