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# st: RE: sequential graphing

 From Nick Cox To "'statalist@hsphsun2.harvard.edu'" Subject st: RE: sequential graphing Date Mon, 14 Feb 2011 21:36:50 +0000

```In addition to other answers:

1. Choosing the same symbol + for both graphs can hardly improve the problem. I've found that combining e.g. Oh and X permits greater visibility of both.

2. Sometimes the problem is at least in part the granularity of measurement. Jittering one or both graphs may help.

3. Did you think about -by()-, namely

twoway scatter y x if inlist(type, 13, 16), mcolor(red) msize(vsmall) msymbol(+)
by(type)

4. A recent column in the Stata Journal explored the idea of plotting subsets twice, each time showing the subset as foreground and the total set as background. See

SJ-10-4 gr0046  . . . . . . . . . . . . . . . Speaking Stata: Graphing subsets
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
Q4/10   SJ 10(4):670--681                                (no commands)
explores graphical comparison of results for two or more
subsets where each subset is plotted in a separate panel,
with the rest of the data as a backdrop

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

Lim, Raymond

I'm making scatterplots of x-y coordinates using two different colors. Stata scatters the red dots first, then the blue. Sadly, the blue covers up most of the red. Is there a way to graph the red and blue dots in the sequence that they appear in the dataset so the end graph has a mix of red and blue? I also plan to do pcspike (connect two points with a line) graphs too.

I've already tried playing around with the transparency, msize and msymbol.
twoway scatter y x if type==16, mcolor(red) msize(vsmall) msymbol(+) || scatter y x if type==13, mcolor(blue) msize(vsmall) msymbol(+)

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```