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Re: st: superimpose 45 degree line in -scatter-

From   Marcello Pagano <[email protected]>
To   [email protected]
Subject   Re: st: superimpose 45 degree line in -scatter-
Date   Sun, 07 Mar 2004 11:44:32 -0500

Good solution except, of course, 0.3*x gives you a slope of 0.3 not a 30 degree line; for that you need the tangent of 30 degrees.


Dimitriy V. Masterov wrote:

For adding lines, my quick and dirty solution is to plot x against x and
not label the line, using twoway command. This will give you a 45 line.
You can define some variables to give you any slope you want. For example,
if you wanted a 30 line.

gen h=_n;
gen v=.3*x;

Here is the command:

twoway (scatter y x, sort) (line v x),  legend(off);

Perhaps there is a more elegant way.


On Sun, 7 Mar 2004 [email protected] wrote:

Dear Statalisters,

I'm using Stata 8 and I would like to know whether and how it is possible to
superimpose a 45 degree line, a 30 degree line, etc over a -scatter- graph.

Further, does Stata support graphs in polar coordinate planes? Or did someone
wrote something on this?

many thanks in advance,
Dimitris Christodoulou

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