The Stata "Survival Analysis" manual (v9 - I must update!) states "sts
generate is a rarely used command" and "sts generate is provided in case
you want to make a calculation, listing, or graph that sts cannot
already do for you."
I've just been plotting survival curves for a large number of groups.
The sts features to identify curves by colour were not particularly
useful. The manual didn't provide an alternative to the legend, but the
following worked as a quick and dirty solution:
sts generate mys= s , by(family)
gen mpos=mod(family,13)
sts graph if family<20, by(fam) addplot( scatter mys _t /*
*/ if fam<20, ms(i) mlab(fam) mlabvpos(mpos) mlabsize(vsmall))
legend(off)
The mlabvpos helps to locate the curve intended by each value (by giving
a bearing) as well as reducing overlap when lines coincide.
I also found a work-round for plotting more than 20 groups on one graph.
Now balks at about 70 levels:
sts graph , by(fam) pstyle(p1 .. ) scheme(s1mono) legend(off) ti(K-M)
Allan
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