Syntax and Runtime Errors
The most common syntax errors will be lack of matching parentheses, brackets, braces, or quotation marks. When you encounter a syntax error, this is the first thing you should check and double-check. I highly recommend that you use a text editor that does parentheses matching and syntax coloring for R, such as Vim or Emacs.
Be aware that often when you get a message saying there is a syntax error on a certain line, the error may actually be in a much earlier line. This can occur with any language, but R seems especially prone to it.
If it just isn’t obvious to you where your syntax error is, I recommend selectively commenting out some of your code, better enabling you to pinpoint the location of the syntax problem. Generally, ...
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