# Re: st: Scatter plot

 From Nick Cox To statalist@hsphsun2.harvard.edu Subject Re: st: Scatter plot Date Sun, 27 Apr 2003 16:56:43 +0100

```Jeffrey

> Can anyone guide me how to draw the scatter plot of the following
data in Stata 7.
> (y1 vs. x1 and y2 vs. x2 in the same graph). Just the scatter plot
rather than weighted scatter plot with weight option.
>
> If the mean of y1 and y2 can be added to the graph as a line
respectively, that will be great!
> Thanks.
>
> x1	y1	x2	y2
> 1	10	2	10
> 1	12	2	10
> 1	12	2	10
> 1	13	2	10
> 1	15	2	10
> 1	15	2	10
> 1	15	2	13
> 1	15	2	13
> 1	15	2	12
> 1	20	2	18
> 1	20	2	19
> 1	20	2	20
> 1	20	2	11
> 1	20	2	11
> 1	25	2	11
> 1	25	2	13
> 1	29	2	14
> 1	30	2	16
> 1	31	2	11
> 1	31	2	10
> 1	32	2	12

Given these data, I suspect that you might
find

dotplot y1 y2

But in general you would also possibly be better off
with a different data structure. Here is one way
to do it in Stata 7:

preserve             (if desired)

gen id = _n
reshape long x y, i(id)
separate y, by(_j)
label var y1 "y1"
label var y2 "y2"
su y1, meanonly
local m1 = r(mean)
su y2, meanonly
local m2 = r(mean)
graph y1 y2 x, yli(`m1' `m2')

restore             (if desired)

OR

(apart from the means) see -muxyplot- on SSC.

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