R help - May 2011 - Line feed for a long character string

Dear all,

Does anyone know how to make a line feed automatically based on the width of
console window? For example, when you cat() a long character string just
like this:

cat("Seminar series is an opportunity for students to learn about ongoing
researches in the field of mathematics, computer science, physics,
chemistry, and some other related programs. Students must complete a seminar
attendance form and return to their mentors.\n")

In my computer, about half of the string is displayed with a symbol ?$?at
the end that looks like this:
> cat("Seminar series is an opportunity for students to learn about
ongoing
> researches in the field of mathematics, computer science, physics,
> chemistry, a$
Any help will be appreciated!

Lisa


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On 11/05/2011 4:46 PM, Lisa wrote:
> Dear all,
>
> Does anyone know how to make a line feed automatically based on the width
of
> console window? For example, when you cat() a long character string just
> like this:
You can use the strwrap() function to insert line breaks.  If it's not 
under your control, and the function you're using tries to print 
something wider than the console, what happens depends on what console 
you're using.  The Windows Rgui does what you describe.  Windows Rterm 
will send all the characters, and cmd.exe or whatever shell you're using 
will probably insert breaks when it hits the end of the line.

Duncan Murdoch
> cat("Seminar series is an opportunity for students to learn about
ongoing
> researches in the field of mathematics, computer science, physics,
> chemistry, and some other related programs. Students must complete a
seminar
> attendance form and return to their mentors.\n")
>
> In my computer, about half of the string is displayed with a symbol ?$?at
> the end that looks like this:
>
>> cat("Seminar series is an opportunity for students to learn about
ongoing
>> researches in the field of mathematics, computer science, physics,
>> chemistry, a$
>
> Any help will be appreciated!
>
> Lisa
>
>
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> View this message in context:
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>
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Hi, Duncan,

On your and  William Dunlap?s suggestion, I tried this:

cat(sep="\n", strwrap("my long character string")),
 
and it works very well. Thanks so much for your help.

Lisa


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