On Jul 30, 2012, at 9:29 AM, Jim Silverton wrote:
I have the following codes:
Now, suppose I have x = runif(1000,0,1, rep(1, 250), rep(0, 100) and
I want
to create a 'bin' for the 0's and the 1's and put the rest of the
values in
say about 20 bins. How can this be done?
?cut
--
David.
Jim
On Thu, Jul 5, 2012 at 4:08 PM, Sarah Goslee
<sarah.gos...@gmail.com> wrote:
Which gives Jim two ways to arrive at exactly the same result, just
different means of specifying the probs for quantile().
Sarah
On Thu, Jul 5, 2012 at 4:01 PM, Rui Barradas <ruipbarra...@sapo.pt>
wrote:
Hello,
With the confusion between bin size and width the OP started, I'll
repost my
answer with a final line. Sorry for the repetition.
h <- hist(x, breaks=quantile(x, probs=seq(0, 1, by=1/20)))
h$counts
[1] 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
Hope this helps,
Rui Barradas
Em 05-07-2012 20:47, Sarah Goslee escreveu:
There's no reason you can't do that with normally-distributed data,
though I'm not sure why you'd want to. My point was rather that you
can't specify the bin width and size both. If you let the bin size
vary, this will work:
set.seed(1234)
mydata <- rnorm(1000, mean = 2, sd = 4)
mydata.hist <- hist(mydata, breaks=quantile(mydata, probs=seq(0, 1,
length.out = length(mydata)/50 + 1)))
mydata.hist$counts
Sarah
On Thu, Jul 5, 2012 at 3:37 PM, Jim Silverton <jim.silver...@gmail.com
>
wrote:
Thanks Sarah!!
Ok so if I have say x = runif(1000,0,1) say instead if the
normal and I
want
a histogram with bins that have an equal number of observations.
For
example
if I want each bin to have 50 observations, how do I do this?
On Thu, Jul 5, 2012 at 3:34 PM, Sarah Goslee <sarah.gos...@gmail.com
>
wrote:
Hi Jim,
You can't specify both number of bins and bin size. You can
specify
breaks: either the number of bins or the location of
breakpoints. A
histogram with 20 bins of 50 observations each must by
definition come
from a uniform distribution.
What are you trying to accomplish?
Sarah
On Thu, Jul 5, 2012 at 3:29 PM, Jim Silverton <
jim.silver...@gmail.com>
wrote:
I have a column of 1000 datapoints from the normal
distribution with
mean 2
and variance 4. How can I get a histogram of these
observations with
20
bins with each bin having 50 observations?
--
Thanks,
Jim.
--
Thanks,
Jim.
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