Dear All: I need to have some data frame objects. First aa object: pH Formulation time Subject [1]1.2 F 0 1 [2]7.4 S 1 2 [3] MF 2 3 [4] 3 4 [5] n i Then, I need to produce 2*3(pH*formulation) different tables. This table includes column of (pH, Formulation, time S1 S2 S3 …..Si) and S1= subject 1, S2=subject 2 and so on. For example: bb1 table pH Formulation time S1 S2 S3….Si [1]1.2 F 0 [2] 1 [3] 2 [4] 3 [5] n
For example: bb2 table pH Formulation time S1 S2 S3….Si [1]1.2 S 0 [2] 1 [3] 2 [4] 3 [5] n Moreover, the values of pH and Formulation column are the combination questions. The values of pH and Formulation column should be the combinations such as (1.2, F), (1.2, S), (1.2, MF), (7.4, F), (7.4, S), (7.4, MF) I am a beginner level in R and I have no idea how to do this. Could any one please help me. Thanks a lot!!! Best regrards Hsin Ya Lee
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