Re: More Probs with FormularManager

• To: Timo Thomas <tthomas@xxxxxxxxxxxxxxxxxxxxxxxx>
• Subject: Re: More Probs with FormularManager
• From: Curtis Rueden <curtis@xxxxxxxxxxxxx>
• Date: Fri, 11 May 2001 13:54:59 -0500

>I added 
>
>  fman.remove("f") 
>
>to the end of the example, but I get 
>
>visad.formula.FormulaException: Cannot remove variable f because other 
>variables depend on it!
>        at visad.formula.FormulaManager.remove(FormulaManager.java:276)
>        at FormulaManagerTest.main(FormulaManagerTest.java:61)
>
>Which variables depend on f? (BTW, the same happens for remove("x")).

Actually, remove("x") worked for me (but it shouldn't work). It turns
out that FormulaManager.remove() had a bug preventing the removal of
variables without dependencies, and allowing the removal of variables
with dependencies.  You can find the fix at:
   http://palm.ssec.wisc.edu/FormulaVar.java

Thanks for finding this bug--I'm amazed it went unchecked for so long.

-Curtis

• References:
  • Re: Probs with FormularManager
    • From: Curtis Rueden
  • More Probs with FormularManager
    • From: Timo Thomas