R help - Jun 2011 - Help with histogram intervals

Dear Sir,
 
How do I change the intervals on the x axis of a histogram plot; let us say 
 for example the intervals were 0,5,10,15,and 20, and I wanted to change 
the  intervals to 0,2,4,6,8,10,12,14,16,18,20.
 
I look forward to receiving your words of wisdom.
 
Ivo

	[[alternative HTML version deleted]]

Hi Ivo,

It depends how you are making the histogram plot.  If you are using
the traditional graphics hist() function, then look at the argument,
"breaks" (type ?hist at the console to pull up the documentation
explaining this).  For example:

hist(x = sample(1:20, 300, TRUE), breaks = seq(0, 20, by = 2))

HTH,

Josh

On Mon, Jun 27, 2011 at 4:23 PM,  <Gwanmesia at aol.com>
wrote:
> Dear Sir,
>
> How do I change the intervals on the x axis of a histogram plot; let us say
> ?for example the intervals were 0,5,10,15,and 20, and I wanted to change
> the ?intervals to 0,2,4,6,8,10,12,14,16,18,20.
>
> I look forward to receiving your words of wisdom.
>
> Ivo
>
> ? ? ? ?[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/

On Jun 27, 2011, at 8:36 PM, Joshua Wiley wrote:
> Hi Ivo,
>
> It depends how you are making the histogram plot.  If you are using
> the traditional graphics hist() function,
And if you are using histogram() you should be looking at , ...  
surprise, surprise, ... the breaks argument.
> then look at the argument,
> "breaks" (type ?hist at the console to pull up the documentation
> explaining this).  For example:
>
> hist(x = sample(1:20, 300, TRUE), breaks = seq(0, 20, by = 2))
>
> HTH,
>
> Josh
>
> On Mon, Jun 27, 2011 at 4:23 PM,  <Gwanmesia at aol.com> wrote:
>> Dear Sir,
>>
>> How do I change the intervals on the x axis of a histogram plot;  
>> let us say
>>  for example the intervals were 0,5,10,15,and 20, and I wanted to  
>> change
>> the  intervals to 0,2,4,6,8,10,12,14,16,18,20.
>>
>> I look forward to receiving your words of wisdom.
>>
>> Ivo
>>
>>        [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
>
> -- 
> Joshua Wiley
> Ph.D. Student, Health Psychology
> University of California, Los Angeles
> http://www.joshuawiley.com/
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT