

17.2 Changing and restoring graphics parameters.17 Setting base graphics parameters with par().15.8 Application of factors: linear regression with an indicator variable.15.4 R’s internal representation of factors.15.3 Retrieving and changing the levels.

14 Basic scatter plots, histograms and simple linear regression.13.2.1 Sorting names in the order of values.13.2 Sorting one vector on the basis of another vector.11.2 Giving names to elements of a vector.11.1 Accessing vector elements by names.9.4 Taking advantage of data conversion in R programming.9.1 Mixing numeric and character elements produces a character vector.8.4.2 Interpreting the results from microbenchmark().8.4.1 Installing and loading packages in R.8.4 Measuring run-times with the microbenchmark package.8.3 Why do run-times depend so much on details of the implementation?.8.2 Measuring run-times with system.time().7.4 Use break to terminate any kind of loop.7.2.3 Example of a while-loop in a realistic application.7.1.5 Don’t forget to initialize variables before the loop.7.1.4 Use seq_along() to loop over the indices in a vector.

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