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st: [Stata 9] scatter axis bug


From   David Airey <david.airey@vanderbilt.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: [Stata 9] scatter axis bug
Date   Tue, 3 May 2005 17:35:54 -0500

I have some weird behavior in a simple scatter plot. The choice of axis range takes on the range of the data if one looked at each variable one at a time, but not the range of the plotted data. For example,

. d ln_rna hrsd17

storage display value
variable name type format label variable label
------------------------------------------------------------------------ -------
ln_rna float %9.0g
hrsd17 byte %8.0g

. scatter ln_rna hrsd17 // <-- gives a bad graph with lots of white space around the cloud

// y range 2 to -2, x range 10 to 35
// from below it should have reflected the common range

. summ ln_rna hrsd17

Variable | Obs Mean Std. Dev. Min Max
-------------+--------------------------------------------------------
ln_rna | 69 .5711169 .6988654 -1.479932 2.003551
hrsd17 | 107 22.31776 3.664202 11 33

. summ ln_rna hrsd17 if ln_rna < . & hrsd17 < .

Variable | Obs Mean Std. Dev. Min Max
-------------+--------------------------------------------------------
ln_rna | 32 .569358 .7230897 -.6635817 2.003551
hrsd17 | 32 23 3.360108 16 31



// a simple example of the problem:

input y x
1 .
20 50
30 40
40 30
50 20
. 1
end

scatter y x

// gives the range of the scatter plot as 0-50 on both axes--this looks stupid--can we fix this?

// also can we fix copying a graph to the clipboard that is > 72 dpi on the Mac? Still copies with a distorted
// x axis if the x axis > 72 dpi

-Dave


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