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Re: st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks?
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks?
Date
Sat, 6 Oct 2012 20:51:37 +0100
The methodology for nice numbers is broadly similar to that described in
STB-25 dm28 . . . Calculate nice numbers for labeling or drawing grid lines
(help nicenum if installed) . . . . . . . . . . . . . . . J. W. Hardin
5/95 pp.2--3; STB Reprints Vol 5, pp.19--20
Otherwise I doubt that there is any on-line documentation of the kind you seek.
Nick
On Sat, Oct 6, 2012 at 7:46 PM, Michael Stepner
<[email protected]> 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.
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