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RE: statalist-digest V4 #3517 (Re: st: how to have legend as labels on graph)


From   "Allan Reese (Cefas)" <allan.reese@cefas.co.uk>
To   <statalist@hsphsun2.harvard.edu>, <gisellayoung@yahoo.com>
Subject   RE: statalist-digest V4 #3517 (Re: st: how to have legend as labels on graph)
Date   Mon, 17 Aug 2009 12:04:53 +0100

My approach to this for a long time has been to generate a label
variable for each Y variable and set all but one value to missing.  
Using the example data generated by Martin Weiss:

gen x1lab="Arizona" if time==100  /* and similar for x2lab, x3lab */
scatter x1 x2 x3  time, c(l l l) mlab(x1lab x2lab x3lab)  xscale(range(0
110)) legend(off)
* Adds a label at the end of each line respectively, with the xrange
extended to fit them in the plot area.

The approach can be generalized to put the label by the maximum on each
line.

egen x1max = max(x1)
gen alt1 = "Arizona" if x1==x1max  /* & hand edit the data if multiple
maxima in data.
scatter x1 x2 x3  time, c(l l l) mlab(alt1 x2lab x3lab) mlabpos(12)
xscale(range(0 110)) legend(off)

Using the standard features of - twoway scatter - you can have markers,
connect lines or both, and vary the position of each line label relative
to its associated datum:

scatter x1 x2 x3  time, c(l l l) mlab(alt1 x2lab x3lab)  mlabpos(12 6 3)
xscale(range(0 110)) legend(off)

The approach is useful because it's data driven - it won't put the label
by the wrong line because of my typos! So it's a good analytic approach
but for presentation one would probably want to nudge the labels using
the graph editor. 

Allan

Original question:

Date: Fri, 14 Aug 2009 08:26:14 -0700 (PDT)
From: Gisella Young <gisellayoung@yahoo.com>
Subject: st: how to have legend as labels on graph

A simple question. I have a simple line graph with multiple lines on it
(one line for each province, showing a single variable over time for
each). Having a legend is confusing as the chart will be in B&W and
there are a number of lines so, even with different line styles, it is
difficult to see which is which. What I want is to have the labels on
the chart itself, next to each line (e.g. on the right hand side), i.e.
next to each line to have the name of the province which it's for. I've
tried and tried but am unable to do this, is it possible???

Thank you!

Gisella
-------


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