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Re: st: obtaining the frequencies used in histogram


From   David Merriman <dmerrim@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: obtaining the frequencies used in histogram
Date   Mon, 8 Feb 2010 21:33:17 -0600

This sounds great but....
I don't know where to find the *.gph file. .Can you tell me how to
find out what the path would be?
I will order the Kit Baum book...sounds very useful.

Thanks for your help.

On Mon, Feb 8, 2010 at 6:35 PM, Scott Merryman <scott.merryman@gmail.com> wrote:
> If you open the *.gph file in a text editor, the graph file contain
> the program statements used to draw the graph, which in this case,
> lists the starting point and the number of bins:
>
> StataFileTM:00001:01000:LiveGPH:                       :
> 00003:00003:
> *! classname: twowaygraph_g
> *! family: twoway
> *! command: twoway (histogram volume [], ytitle(`"Frequency"')
> xtitle(`"Volume (thousands)"') legend(cols(1)) barwidth(-99)
> plotregion(margin(b=0))   legend(nodraw) frequency start(4103) bin(15)
>  )   (histogram volume [], frequency start(4103) bin(15)
> recastas(scatter) msymbol(none) mlabel(_height) mlabposition(12)  )
> ||  ||
> *! command_date:  8 Feb 2010
> *! command_time: 18:20:12
> *! datafile: C:\Program Files\Stata11\ado\base/s/sp500.dta
> *! datafile_date: 22 Apr 2009 10:52
> *! scheme: s2color
> *! naturallywhite: 1
> *! xsize: 5.5
> *! ysize: 4
> *! end
> <BeginIte
>
> Furthermore, on line 114 it list the bar widths:
> .plotregion1.plot1.bar_size = 1280.353333333333
>
> See also, Kit Baum's "An Introduction to Stata Programming," section
> 10.5 Extracting data from graph files' sersets
>
> Scott
>
>
> On Mon, Feb 8, 2010 at 6:09 PM, David Merriman <dmerrim@gmail.com> wrote:
>> I have created some histograms in stata to be used in an article which
>> is to be published.
>> The person responsible for preparing the artwork for the publication
>> has requested that I give her a
>> table showing the raw frequencies used in the histogram.
>> There are a number of histograms in the paper and   I am finding this
>> quite difficult  for some of them.
>>
>> It is not a problem when I specified the bin, frequency and label
>> options as below
>>
>> clear
>> sysuse sp500
>> **********************************
>> * with bin option
>> **************************************;
>>  histogram volume, bin(15) frequency addlabel
>> summarize volume
>> gen min_vol=r(min)
>> gen max_vol=r(max)
>> generate volumecat = autocode(volume, 15, min_vol, max_vol)
>> tab volumecat
>>
>> However, when I wrote the original paper I created the histograms
>> without specifying the number of bins
>> e.g.
>>
>> **********************************
>> * without bin option
>> **************************************;
>>  histogram volume, frequency addlabel
>>
>>
>> In these cases it hard to know the starting and ending points for the bins.
>> I wonder if anyone has an idea how to do this?
>> Thanks.
>>
>>
>> --
>> David Merriman
>> dmerrim@gmail.com
>
> *
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>



-- 
David Merriman
dmerrim@gmail.com

*
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