R and MATLAB

6

 

 

Flow Control

 

Both R and MATLAB have similar and standard methods for controlling the flow of code — statements such as if/else, while, and for. The two packages are more similar than different, with mainly just some differences in the syntax used to delimit the loops.

 

 

6.1 Conditional (“if”) statements

Both platforms have if statements to allow a block of code to optionally be executed, depending on the value of a logical test. The common logical operators are listed in Table 6.1.

R

In R, an if statement has the form

R

if (condition) command

The condition should be a logical (TRUE/FALSE) value; unlike MATLAB, this should be a scalar value. If you provide a vector, only the first element is used, and a warning is displayed. Values ...