New user of Mathematica (FORTRAN related question)
- To: mathgroup at smc.vnet.net
- Subject: [mg30870] New user of Mathematica (FORTRAN related question)
- From: Jorge Luis LLanio Trujillo <jolla at taurus.ci.uc.pt>
- Date: Fri, 21 Sep 2001 04:04:08 -0400 (EDT)
- Organization: Universidade de Coimbra
- Sender: owner-wri-mathgroup at wolfram.com
Dear all, i have some questions to ask Q1: How to force mathematica to write to my output file file.f FORTRAN-compliant 72-character lines and also a continuation mark (* for example) in the 6 columns? It seems to me that FortranForm[] produce very bad fortran syntaxis. I need to compile this file after using MATHEMATICA ( f77 Digital Unix) I mean, FortranForm[D[f,x1,x2]] >> file.f The file file.f gives me a bunch of compilation errors. Q2: Why Mathematica fails to do the substitution(and others like that): ________________________________ / 2 2 2 D[y,x1,x2] /. \/ (x4-x1) + (x5-x2) + (x6-x3) -> R1 here y is some function of x1 and x2 Thanks very much for the help, Jorge