nevermind - a test was added. If you would like to see more added, please see https://github.com/sympy/sympy/pull/22427
/c On Friday, November 5, 2021 at 12:32:00 AM UTC-5 Chris Smith wrote: > Could you please either show the code that gave that result or else add it > as a test for #20047 > > /c > > On Sunday, October 31, 2021 at 7:42:13 PM UTC-5 Sean Logan wrote: > >> Hello, >> >> I discovered that the divergence() function from sympy.vector gives >> incorrect answers sometimes when using Cylindrical coordinates. For >> example: >> >> divergence( 1 * rhat ) >> # returns 0 when it should give 1/R >> >> I found that this issue was raised last year, and a patch offered, but it >> was never integrated into the sympy release. >> >> https://github.com/sympy/sympy/pull/20047 >> >> I went into sympy/vector/operators.py and commented out lines 366-368 by >> hand. That seems to have fixed the problem. >> >> I also found this library, called "symfields" which does div, grad, curl >> properly in cylindrical, spherical, or any curvilinear coordinate system >> >> https://github.com/DocNan/SymFields >> >> it does not use CoordSys3D. >> >> -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/b795360a-0cde-43b7-8e6a-5b22797820bbn%40googlegroups.com.
