2014-02-13 0:38 UTC+01:00, William Stein <[email protected]>: > On Wed, Feb 12, 2014 at 2:50 PM, Jason Grout > <[email protected]> wrote: >> David Smith just pointed this out: arcsec(float(.1)) throws an error that >> doesn't make much sense. Yes, it's outside of the domain, but it should >> probably deal with this by returning NaN or something rather than a type >> error. This came up when David was trying to plot arcsec. >> >> On a related note, maybe we should have some sort of error that can be >> thrown for values outside of domains? Plot could catch an out-of-domain >> error and break the drawing there, so you wouldn't end up with something >> like http://sagecell.sagemath.org/?q=llweji >> > > What about ValueError? > > http://docs.python.org/2/library/exceptions.html#exceptions.ValueError >
+1 On the other hand, it would be very nice and meaningful to have sage: arcsec.domain() (-infty; -1] u [1; +infty) That kind of information can then be used by call to plot. Vincent -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
