Re: st: Xaxis range

[Nick Winter <nw53@cornell.edu>]

This has confused me periodically, too.

The issue is that the range of an axis can be expanded either by explicitly 
specifying a wider axis (with "xscale( range( ) )") or by specifying axis 
labels that include numbers outside the range of the data.

By default, twoway defaults to labeling the axes with "about" 5 ticks, the 
equivalant of

  . scatter mpg price , xlabel(#5)

and this will expand the range of the axis to make for round numbers.  So 
you need to specify a narrower set of labels.

  . scatter mpg price , xlabel(minmax)

  . scatter mpg price , xlabel(2000 7000 15000)

and so on.

--Nick Winter



At 02:11 PM 3/23/2005 -0500, you wrote:

> I am creating a scatterplot in which the minimum x value is 3.002 and
> the maximum value is 9.29 (it comes from a larger dataset in which I
> have dropped values larger than 10 or smaller than 3).  When I create a
> twoway scatter the displayed graph ranges from 2 to 10.  I would like
> the left-hand axis to start at 3, which will not cut off any data, but
> the xaxis(range(3 10)) option doesn't seem to do the trick, as I
> suspected it wouldn't since the documentation suggests that this command
> only expands ranges.  Suggestions?
>
> Jonathan Falk
> Vice President, NERA
> 1166 Avenue of the Americas
> New York, NY 10036
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