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RE: st: Changing the scale of a graph


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Changing the scale of a graph
Date   Fri, 8 Jun 2012 17:43:32 +0100

The problem may look similar, but I think the explanation is different. 

Stata is showing dates 30nov2007 13apr2009 26aug2010 8jan2012 on the x axis. So why is it doing that? 

. di d(30nov2007)
17500

. di d(13apr2009)
18000

. di d(26aug2010)
18500

. di d(8jan2012)
19000

shows that these are dates 17500(500)19000 and so understandable default choices. Better choices for you might be 1jan2009 ... 1jan2011. So you can go (e.g.) 

xla(`=mdy(1,1,2009)' `=mdy(1,1,2010)' `=mdy(1,1,2011)', format(%td)) 

See also 

SJ-7-4  gr0030  . Stata tip 55: Better axis labeling for time points/intervals
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        Q4/07   SJ 7(4):590--592                                 (no commands)
        tip on labeling graphs for time points and time intervals

http://www.stata-journal.com/sjpdf.html?articlenum=gr0030

Nick 
n.j.cox@durham.ac.uk 

stef salvez

Maybe the problem you described bove is similar to mine. I get a lot
of white space on the left of the plot

 Have a look:


clear all
cd d:\
input str8  (Austria	       Belgium	        )
 "2/11/08"     "07/12/08" 	
"30/11/08"	    "04/01/09" 	
"28/12/08"	    "01/02/09" 	
"25/01/09"	    "01/03/09"
"22/02/09"	    "29/03/09" 	
"22/03/09"	    "26/04/09" 	
"19/04/09"	    "24/05/09" 	
"17/05/09"	    "21/06/09" 	
"14/06/09"	    "19/07/09" 	
"12/07/09"	    "16/08/09" 	
"09/08/09"	    "13/09/09" 	
"06/09/09"	    "11/10/09" 	
"04/10/09"	    "08/11/09" 	
"01/11/09"	    "06/12/09" 	
"29/11/09"	    "03/01/10" 	
"27/12/09"	    "31/01/10" 	
"31/01/10"	    "28/02/10" 	
"28/02/10"	    "28/03/10" 	
"28/03/10"	    "25/04/10" 	
"25/04/10"	    "23/05/10" 	
"23/05/10"	    "20/06/10"
"20/06/10"	    "18/07/10" 	
"18/07/10"	    "15/08/10" 	
"15/08/10"	    "12/09/10"
"12/09/10"	    "10/10/10" 	
"10/10/10"	    "07/11/10" 	
"07/11/10"	    "05/12/10" 	
"05/12/10"	    "02/01/11" 	
"01/01/11"	    "30/01/11" 	
"30/01/11"	    "27/02/11"
"27/02/11"	    "27/03/11" 	
"27/03/11"	    "24/04/11" 	
"24/04/11"	    "22/05/11" 	
"22/05/11"	    "19/06/11" 	
"19/06/11"	    "17/07/11" 	
"17/07/11"	    "14/08/11" 	
"14/08/11"	    "11/09/11" 	
"11/09/11"	    "09/10/11" 	
"09/10/11"	    "06/11/11" 	

end
gen dAustria = date(Austria, "DM20Y")

gen dBelgium = date(Belgium, "DM20Y")

gen dA2 = dAustria - dAustria[_n-1]
gen dB2 = dBelgium - dBelgium[_n-1]
 gen Aus= 10
gen Bel = 9
gen t10 = (dAustria + dAustria[_n-1]) / 2
gen t9 = (dBelgium + dBelgium[_n-1]) / 2
                    	       	       	       	       	        	        	
 scatter Aus  dAustria, xsize(20) ysize(8)|| scatter Bel  dBelgium     || //
scatter Aus t10, ms(none) mla(dA2) mlabpos(910) || ///
scatter Bel t9 , ms(none) mla(dB2) mlabpos(910)
 yla(9 "Belgium"  10 "Austria"    , ang(h)) xla(, format(%td)) legend(off)


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