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 <[email protected]> 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
> [email protected]
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