[MUG] Maple r4 ->Maple r5 ->Maple r4 problems

[MUG] Re: Maple r4 ->Maple r5 ->Maple r4 problems
Author: Maple Group    Posted: 31/03/2000 15:08:56 GDT
>> From: Maple Group | >> From: Ron Grimmer | Is there any way to achieve the r4 -> r5 -> r4 process without losing parts? -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=- Date: Wed, 29 Mar 2000 17:30:28 +0100 From: "Dr Francis J. Wright" To: Subject: Maple r4 ->Maple r5 ->Maple r4 problems My students have precisely the same problem. But in my experience, opening a R5 worksheet in R4 only loses some of the output, in particular any plots, which can all be recovered by re-executing the worksheet (after replacing % by " etc.). Francis -- Dr Francis J. Wright (Senior Tutor for Mathematics) School of Mathematical Sciences | mailto: Queen Mary & Westfield College | tel: (020) 7882 5453 (direct) University of London | fax: (020) 8981 9587 (dept.) Mile End Road, London E1 4NS, UK | http://www.maths.qmw.ac.uk/~fjw/ -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=- From: Mike May Date: Wed, 29 Mar 2000 12:20:00 -0800 (PST) To: Subject: Maple r4 ->Maple r5 ->Maple r4 problems Ron, Due to limits of machines in two labs, I had to have students switch back and forth between Maple VR4 and VR5 on a routine basis last year. For the stuff I would have students work on the general rule was that going from 4 to 5 gave a warning message that the worksheet needed to be updated. For calculus classes virtually nothing was changed and the worksheets worked fine. Going the other way from R5 to R4 had a problem if the worksheet included 3D graphics. Then there would be a message that there had been a problem in loading and the worksheet was now incomplete. Upon further inspection that always turned into the loss of the 3D graphics. Simply re-executing the worksheet (Which could be done by a command from the menu bar) fixed things up again. There are of course minor exceptions. I have found a few integrals that R4 could easily do and that R5 needed to be told assumptions. More importantly, the 3D graphics in R5 allow live rotation so they can be more easily tweeked to get the right viewing angle. R4 graphics require explicit redraws. I suspect that is the heart of the conversion problem. R5 is using some different graphics routines that allow easier manipulation. New features are rarely backwards compatible. I suspect smartgraphs would also cause problems. I have just started playing with Maple 6. So far things are converting without a problem, but I am starting with worksheets that have only simple Maple constructions. Sincerely, Mike May, S.J. -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=- Date: Wed, 29 Mar 2000 15:44:33 -0500 (EST) From: David Vaughan To: Subject: Maple r4 ->Maple r5 ->Maple r4 problems I had a similar experience with Maple V Release 4 and Maple V Release 5 - a program that ran reasonably well under Release 4 did not produce the same results under Release 5 (it was a fractal picture, and the colour scheme basically disappeared). Is Maple VI going to be of even more trouble? DCVaughan -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=- Date: Wed, 29 Mar 2000 22:34:56 -0800 (PST) From: Robert Israel To: Subject: Maple r4 ->Maple r5 ->Maple r4 problems In general, Maple makes some effort to be backwards compatible, but can't be forwards compatible: if a new release includes some new data structure, previous releases may not know what do do with it if they encounter it in a worksheet. For example, in some cases Release 4 has trouble with Release 5 worksheets containing plots, especially 3D plots, because there were substantial changes in these between the two releases. But I think that if you have your students remove all the output from their worksheets (which is easily done from the Edit menu) before saving them, Release 4 shouldn't have any trouble reading the worksheet. Of course, whether it can execute the worksheet is another question, but at least you'll be able to see what their inputs were. Robert Israel Department of Mathematics http://www.math.ubc.ca/~israel University of British Columbia Vancouver, BC, Canada V6T 1Z2 -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=- Date: Fri, 31 Mar 2000 05:47:30 -0800 (PST) From: Jonathan Dentch Subject: Maple r4 ->Maple r5 ->Maple r4 problems To: Ron, I am having similar problems with R4 and R5. I recently took a course in numerical analysis. The text book came with algorithms prepared as Maple procedures in R4. Many of the procedures won't run in R5. For example, when the procedure prompts me for an input file, I answer yes but the program terminates anyway. Jonathan Dentch Rensselaer at Hartford __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

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