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Re: st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks?


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks?
Date   Sun, 7 Oct 2012 10:12:41 +0200

The program that creates those tick values (-_natscale-) is build in
so we cannot take a look at it. However if you just want a program to
create "nice" tick values you can use -_natscale-.

Hope this helps,
Maarten

On Sat, Oct 6, 2012 at 8:46 PM, Michael Stepner wrote:
> I'm trying to find a description of the formula or algorithm Stata
> uses to set the default look of a scatter plot's axes: how it chooses
> the default range and tick marks.  I've searched online and in the
> Stata manual, but haven't found any details.  I've read that Stata
> chooses approximately 5 "nice values" for the tick marks, but haven't
> found any indication of how those "nice values" are selected.
>
> If anyone could point me to a detailed description of the methodology
> for selecting the nice defaults, it would be greatly appreciated!
> Even if it's just pointing me to some code where these defaults are
> calculated and implemented, that would be a great help.
>
> Thank you,
> Michael Stepner
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-- 
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany

http://www.maartenbuis.nl
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