st: Problem with -graph use- and earlier graph versions

[Clyde Schechter <cschecht@aecom.yu.edu>]

I have some .gph files with line graphs that were created by version 
8.1 using the sj scheme.  I recently wanted to have a look at one of 
them, and was surprised to find that when I -graph use-d it (in 
version 9.1), all of the line graphs were rendered with a solid line, 
so it was impossible to distinguish which was which.

Re-generating the graph in version 9.1 by re-running the original do 
file that created it (which includes a -version 8.1- statement at the 
top), the graph rendered properly and distinguished each of the line 
graphs with a different line style.  Saving those re-generated 
graphs, and re-examining them with -graph use- led to no problems: 
each line got its own line style.

So it seems that version 9.1 has a problem rendering graphs generated 
under version 8.1 with scheme sj.  (I haven't checked if other 
schemes encounter problems as well.)

Has anybody else encountered this problem?  In this case the work 
around was simple because the do-file to create the graph runs in 
minutes--but if this came out of a program that takes hours or days 
to run, it would be a problem.

Clyde Schechter
Department of Family & Social Medicine
Albert Einstein College of Medicine
Bronx, NY, USA


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