Re: a small fix for hist.m

[Ben Abbott]

On Dec 1, 2010, at 8:24 AM, Ben Abbott wrote:

> On Nov 30, 2010, at 10:39 PM, Doug Stewart wrote:
> 
>> On Tue, Nov 30, 2010 at 9:33 PM, Doug Stewart <address@hidden> wrote:
>>> On Tue, Nov 30, 2010 at 9:19 PM, Ben Abbott <address@hidden> wrote:
>>>> On Nov 30, 2010, at 7:35 PM, Doug Stewart wrote:
>>>> 
>>>>> I am now retired from teaching, and am going to spend some time
>>>>> improving the help section of some M files.
>>>>> 
>>>>> I am learning as I go so please go easy on me :-)
>>>>> 
>>>>> 
>>>>> I have got hg working.
>>>>> I have got the tip and made a change to hist.m
>>>>> I have attached the diff file.
>>>>> 
>>>>> I am also suppose to create one more document about the changes.
>>>>> Can someone show me how to do this last part
>>>>> 
>>>>> Doug Stewart
>>>>> 
>>>>> PS. This is just a small fix for me to learn on.
>>>>> <hist.diff>
>>>> 
>>>> 
>>>> I see one minor format mistake. The output and equals sign should be 
>>>> enclosed in the curly brackets.
>>>> 
>>>> Forgive the micro-management, but I assume you'll be adding the various 
>>>> modes of operation as well. Perhaps something like ...
>>>> 
>>>> ## @deftypefn {Function File} {} hist (@var{y})
>>>> ## @deftypefnx {Function File} {} hist (@var{y}, @var{x})
>>>> ## @deftypefnx {Function File} {} hist (@var{y}, @var{nbins})
>>>> ## @deftypefnx {Function File} {} hist (@var{y}, @var{x}, @var{norm})
>>>> ## @deftypefnx {Function File} {[nn, xx] =} hist (@dots{})
>>>> 
>>>> Ben
>>> 
>>> Thank you Ben for the help (mico-managment :-) )
>>> Yes   after I get the process figured out I hope to do much more.
>>> And yes I do know about passing the colors through to bar()
>>> 
>>> I will resubmit this one.
>>> Doug
>> 
>> here is the new diff
>> Is there anything else I should do?
>> <hist.diff>
> 
> The help text can be improved by changes such as ....
> 
> -## With one vector input argument, plot a histogram of the values
> +## With one vector input argument, @var{y}, plot a histogram of the values
> 
> If you're up to a bug fix, it looks to me like the example below does not 
> produce the correct result.
> 
> y = randn (1, 1000);
> x = [0.1, 0.2, 0.5, 0.7 0.9];
> hist (y, x)
> 
> Matlab gives the attached result. Its not immediately clear to me how the bin 
> widths are determined.
> 
> Ben
> <hist.pdf>

I need my morning coffee ... but it looks like the edges of the bins are 
centered between adjacent values for "x", with the outer most edges extending 
to encompass all values of "y".

Ben