I think I can draw what I need with pgplot, but I'm having trouble compiling.
I know that I need to use the -lpgplot option (i'm using absoft f90), but it has unsatisfied dependencies from who-knows which libraries. So the very simple program ! program to make exampble bubbles for dynamic programming program bubbles1 implicit none integer,external:: pgopen external pgclos if (pgopen('bubbles1.ps/PS') < 0) stop call pgclos end program bubbles1 yields smithttyp0:graphics>f90 bubbles1.f90 bubbles1.o: In function `main': bubbles1.o(.text+0x82): undefined reference to `PGOPEN' bubbles1.o(.text+0xe5): undefined reference to `PGCLOS' as to be expected. But adding -lpgplot not only doesn't get rid of these, but adds dependencies for pgplot, including (but not just) tk8.0 I seem to be missing something here; I have no such problems with the imsl libraries, for which -limsl does it rick --