[R] R step-by-step execution

[Liviu Andronic]

Hello

On Fri, Oct 22, 2010 at 11:33 AM, Alaios <alaios at yahoo.com> wrote:
> I wouldl ike to ask you if R supports step by step execution.  I have written
> some nested loops and  I would like to check on every  step what are the values
> of some variables.
>

> fortune('browser')

My solution when I run into mysteries like this is to put 'browser()' in the
function just before or after the line of interest. The magnitude and direction
of my stupidity usually become clear quickly.
   -- Patrick Burns
      R-help (February 2006)


Then check the help page for related functions. Regards
Liviu



> Printing all the variables  just creates a really big output
> of numbers.
>
> Could you please give some debugging tutorial that included the aforementioned
> functionalities?
>
>
> |Moreover can you please tell me how I can concatenate variables and strings so
> to print some debugging messages /
> "The value of x is " + x + " and the value of y is " +y.
>
>
> Best Regards
> Alex
>
>
>
>        [[alternative HTML version deleted]]
>
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



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