Re: st: String variable as text labels below x-axis

[Nick Winter <nw53@cornell.edu>]

I don't fully understand your data structure and/or the graph you are 
plotting...if you are doing more than one course per plot, then things 
would get very messy.

But, to get the name(s) listed at a constant height across the graph, 
something like this might help.  I'm assuming that your name variable has 
the multiple names, separated by commas, so your data look something like this:

                                    name     a     b     c       Y
  1.   Nick Winter, Nick Cox, Bill Gould     1   1.2   1.2   98-99
  2.                         Nick Winter   1.1   1.6    .7   99-00
  3.                            Nick Cox   1.2     1   1.4   00-01
  4.           Vince Wiggins, Bill Gould     1    .6    .6   01-02

If it is something else, you will need to modify accordingly.

        . split name , gen(name_1) parse(", ")

This creates variables name_1 through name_5, each containing one (or no) 
instructor name.

        . gen height1 = -0.1
        . gen height2 = -0.2
        . gen height3 = -0.3
        . gen height4 = -0.4
        . gen height5 = -0.5

This creates the variables to indicate the vertical placement of each name; 
this may take some manual tweeking to get exactly right.

. twoway sc a b c Y, c(l l l) || ///
        sc height1 Y , mlab(name_1) mlabpos(0) mlabstyle(p1) mstyle(none) 
|| ///
        sc height2 Y , mlab(name_2) mlabpos(0) mlabstyle(p1) mstyle(none) 
|| ///
        sc height3 Y , mlab(name_3) mlabpos(0) mlabstyle(p1) mstyle(none) 
|| ///
        sc height4 Y , mlab(name_4) mlabpos(0) mlabstyle(p1) mstyle(none) 
|| ///
        sc height5 Y , mlab(name_5) mlabpos(0) mlabstyle(p1) 
mstyle(none)    ///
        xlabel( ,val) xscale( range(0.7,4.3) ) legend(off) ylab(0[.5]2)

You may need to fiddle with the xscale(range) to get the xscale wide 
enough, and you may need to fiddle with the ylab() option to get the 
labelling where you want it.

--Nick Winter


At 06:35 AM 7/8/2004 -0700, you wrote:

> Hi Statalisters,
>
> I have a dataset including three numeric indices (say
> a, b, c) for the quality of a course, the number of
> the students of the course (N), the year (Y) of the
> course as a labeled numeric variable (1->"98-99",
> 2->"99-00" etc.) and a string variable (name)
> containing the name(s) of the instructor(s). The
> number of instructors varies across years from 1 to 5
> thus my string variable is quite long in some cases. I
> want to produce a graph showing the evolution of these
> three indices through time. I have used something
> like:
>
> . sc a b c  Y,xlabel( ,val  ) c(l l l ) mlabel(name)
>
> but I am looking for a more elegant graph. More
> specifically I would like to see the name or names of
> the instructors plotted (stacked beneath each other if
> more than one) below the ylabels (98-99, 99-00 ...) or
> in a similar way within the graph in a constant
> height.
>
> I am asking this because although it's possible to
> achieve such a graph using the added_text_options I
> suppose or by editing the graph outside Stata, I have
> lots of such datasets to plot.
>
> Thanks for any ideas
>
> Nikos Pantazis
>
> Biostatistician
>
>
>
>
>
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--------------------------------------------------------
Nicholas Winter                           607.255.8819 t
Assistant Professor                       607.255.4530 f
Department of Government              nw53@cornell.edu e
308 White Hall            falcon.arts.cornell.edu/nw53 w
Cornell University
Ithaca, NY 14853-4601 

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