![]() ![]() ![]() Let's recall how to create a matrix of data from some given measurements, say heights and weights of 15 students. We discussed vectors, matrices and arrays in the first module in this series. Review of Matrices, Arrays, and Data Frames > sample(c("First","Second","Third","Fourth"), replace=F) ![]() Generating a random permutation of a set of data:.Use grouped expression and if-else statements:.Perform simple data manipulations: vectors (numeric, logical, character), missing values, index vectors, many-to-one, one-to-many merging.Grouping, loops and conditional executionīy the end of this session students will be able to:.This module will build additional skills in R programming by going beyound simple commands. Jacqueline Milton, PhD, Clinical Assistant Professor, Biostatistics Ching-Ti Liu, PhD, Associate Professor, Biostatistics ![]()
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