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Re: st: graphing median values against time
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: graphing median values against time
Date
Thu, 27 Mar 2014 23:48:09 +0000
Sure. If you use -egen-'s -median()- and -mean()- functions to get the
variables you want, then it's any graph you want.
As the median and mean values are repeated, don't plot them repeatedly.
Here are some dopey examples.
. webuse grunfeld
. egen median = median(invest), by(year)
. egen mean = mean(invest), by(year)
. egen tag = tag(year)
. line mean median year if tag
For finer subdivisions, just use more variables as arguments to -by()-.
Nick
[email protected]
On 27 March 2014 22:34, Donald Spady <[email protected]> wrote:
> Dear all
> I want to graph the median and mean values of a series of variables against a time variable (on the X axis) and with the option of stratifying the variables by another one (such as sex or disease state). I think I can do this by collapsing the data but is it possible to do this while retaining the data set in its 'original' state. I have searched the archives and the reference manuals but have not come up with anything that seems to be what I want.
> In many ways what I would like is a box plot with JUST the median (or mean) being plotted: no box, no outliers. Is that possible.
>
> Thanks
> Don
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