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| From | Nick Cox <n.j.cox@durham.ac.uk> |
| To | "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu> |
| Subject | st: RE: Jittering problem |
| Date | Fri, 20 May 2011 15:13:59 +0100 |
This is more portable than Fred's example if you are not a collaborator of his and thus do not share his data. sysuse auto, clear gen m = word(make, 1) scatter head rep78 if !foreign, jitter(8) /// || scatter head rep78 if foreign, jitter(8) scheme(bw) more scatter head rep78 if !foreign, jitter(8) mla(m) /// || scatter head rep78 if foreign, jitter(8) scheme(bw) mla(m) The essence of the problem appears to be that using marker labels inhibits jittering. I guess wildly that the way that jittering is implemented rules out -mla()- knowing exactly where to put the marker label, so jittering is ignored. So, I guess further that you need to pre-jitter yourself by adding random noise. An automated way to do this would use some fraction of the range of each variable multiplied by -runiform()-. Nick n.j.cox@durham.ac.uk Fred Wolfe When I use this command, the graph will be jittered: scatter fatig glb_ if ra_sev==0, jitter(8) || scatter fatig glb_ if ra_sev >0, jitter(8) scheme(bw). It will not be jittered when I use this command: scatter fatig glb_ if ra_sev==0,mfcolor(white) color(black) msize( medlarge) mlabel(ptglobak) jitter(8) || scatter fatig glb_ if ra_sev >0,mfcolor(black) xline(1.1) msize(medlarge) msymbol(circle) mlabel(ptglobak) jitter(8) scheme(bw). I couldn't find any discussion of this problem on the list. Any suggestions to make jittering work? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/