How do I write a script that increments along a dataset header

Question

Gregory 2013-1-22

0
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https://ww2.mathworks.cn/matlabcentral/answers/59584-how-do-i-write-a-script-that-increments-along-a-dataset-header

I've got one large dataset that consist of a number of trials. The trials include numerous different units in two different conditions (pre and post treatment,) each with multiple variables. I'd like to create a script that runs analysis on each unit between the pre and post groups, something like

ttest((mean(data.variable1(data.unit=='unit1' & data.treatmentstatus=='Pre Treatment'))), mean(data.variable1(data.unit=='unit1' & data.treatmentstatus=='Post Treatment')))

How can frame this in a script such that it automatically increments along the different unit titles ('unit1', 'unit2', ..., then variable1, variable2, ..., etc)

Thanks!