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Units don't match - but units not used?
  Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740   Was thanked: 318 time(s) in 268 post(s)
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Hello, I would like someone to try to reproduce this (v.096 Stable and Night Build). -Open both files "No_units_used.sm" and "Units_dont_mathc.sm" in the same instance of SMath using File|Open (not doubleclick on them) -Then just recalculate. The strange "Units don't match" error will appear on the "Units_dont_mathc.sm". Look at the pictures please. -If you open only the "Units_dont_mathc.sm" then everything is OK. -If you just open only "Units_dont_mathc.sm" everything is Ok. Therefore, it seems that "No_units_used.sm" is the cause of problem. In those files there are no units used (or at least I am not aware of that) Regards, Radovan Edited by user 08 May 2013 11:38:58(UTC)
| Reason: Not specified File Attachment(s): omorr attached the following image(s): |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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  Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,654  Location: Italy Was thanked: 1340 time(s) in 879 post(s)
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Just to update this thread... Here there is a file made with SMath 0.95 (1st screenshot) by omorr; the example show the bug directly (no needs to open a couple of files) in the root() function (SMath 0.96.4884 - 2nd screenshot) but I've noticed the same issue trying solving this problem using my Nonlinear Solvers, so I suppose it's something deep outside the root() code... best regards, w3b5urf3r Edited by user 23 May 2013 13:38:48(UTC)
| Reason: Not specified File Attachment(s): Davide Carpi attached the following image(s): |
If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects |
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on 23/05/2013(UTC), on 23/05/2013(UTC)
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,654 Location: Italy Was thanked: 1340 time(s) in 879 post(s)
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Originally Posted by: w3b5urf3r_reloaded  I've noticed the same issue trying solving this problem using my Nonlinear Solvers After a little "debug session" using the Nonlinear Solvers Broyden() function as reference, seems that the issue is related to the eval function ... I attach here a screenshot of the code.. at the first loop the variables are those shown in the 2nd screenshot; the stack function doesn't cause issues, but enabling/disabling the eval the error disappear (at least for this piece of code)... Hope this will be useful for Andrey best regards, w3b5urf3r Edited by user 23 May 2013 23:51:02(UTC)
| Reason: Not specified Davide Carpi attached the following image(s): |
If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects |
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Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740 Was thanked: 318 time(s) in 268 post(s)
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Hello w3b5urf3r, Try this please. - Use the recent v0.96.4884. Open the sm file from this post ( broyden-method.sm ). Everything should be fine. Than close it. - Open the above mentioned file ( Primer44w-1.sm ), then open ( broyden-method.sm ). Now, ( broyden-method.sm ) will fail with "Units don't match" (units wern't used). - Now,without closing either of the two files, remove eval() from ( broyden-method.sm ) in the function definition - three commands h:eval(-B*f(x0))z:eval(f(x)-f(x0))B:eval(B-{(B*z-h)*transpose(h)*B}/el((transpose(h)*B*z),1)) Now, function call will work and the results will be obtained. But, strangely, you can not get the numerical values of the function f(), only symbolical - see the first picture please. Save the corrected ( broyden-method.sm )and close SMath. Reopen SMath and open just ( broyden-method.sm ). Now, everyrhing is fine (the second picture)  Regards, Radovan Edited by user 23 May 2013 22:08:46(UTC)
| Reason: Not specified File Attachment(s): omorr attached the following image(s): |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,654 Location: Italy Was thanked: 1340 time(s) in 879 post(s)
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Confirmed (by opening the files in the same instance of SMath using File|Open or by dragging the 2nd file on the canvas); this confirms in some way the eval() role in this bug... best regards, w3b5urf3r Edited by user 23 May 2013 23:55:49(UTC)
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If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects |
1 user thanked Davide Carpi for this useful post.
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