RE: Get Error - Messages
- To: mathgroup@smc.vnet.net
- Subject: [mg12078] RE: Get Error - Messages
- From: "Ulrich <uroesch@student.uni-kl.de> Roesch" <uroesch@student.uni-kl.de>
- Date: Sat, 25 Apr 1998 01:30:14 -0400
- Organization: Universitaet Kaiserslautern
Hi everyone out there ... I need a little Help on Mathematica 2.2 . We have to describe a pre-calculated 3D Vectorfield by 3D Fieldlines. But if we choose a starting point on which the Fieldline would leave the Interploated 3D Area this message occurs : NDSolve::ndnum: Differential equation does not evaluate to a number at t = 1.61292. Now, we understand the problem why this message occurs, but we need to know the Point t = 1.61292 (the exact number of t) exactly in a variable. I have tried to get more Info via "Check" or "CheckAbort". Also patching the Error-Message with NDSolve::ndnum = "`2`" results the wanted t = ... while computing the Fieldline, but we have no access to this for further calculations. I would be very pleased, if somebody could answer me how to get the message to a string or better the exact t value in a Real variable I hope somebody understands my bad English and answers me by e-mail to uroesch@rhrk.uni-kl.de Many thanks in forward to all people, who spend some time on thinking about my Problem ... Ulrich Roesch University Of Kaiserslautern, Germany - Department of Physical Chemistry -