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The following Smath File worked fine under 97.5890. It opens a Excel data file for analysis. But it crashes under 98.5905. Why this happens?  Test-Op_Study.sm (78kb) downloaded 22 time(s). DailyQ_Malwala.xlsx (86kb) downloaded 22 time(s). |
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka |
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 Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,648  Location: Italy Was thanked: 1329 time(s) in 875 post(s)
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The crash is triggered in sum(1) Even copying the Q matrix in a definition on the canvas the crash still happens.  Issue isolated: crash sum 1.sm (319kb) downloaded 20 time(s).P.S. try sum(identity(30)) and sum(identity(50)), the second one crashes for me opened as issue SS-2302Edited by user 21 May 2016 02:21:02(UTC)
| Reason: marked as fixed |
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Try this instead 
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... sorry, forgot to attach the file crash sum 1.sm (323kb) downloaded 19 time(s).
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Originally Posted by: Davide Carpi  P.S. try sum(identity(30)) and sum(identity(50)), the second one crashes for me The second one crashes for me too |
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka |
 1 user thanked ndtma for this useful post.
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2 users thanked Andrey Ivashov for this useful post.
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on 06/03/2016(UTC), on 06/03/2016(UTC)
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Ioan, You can dedicate a function "VectorMatrixSum(data)" Unwrap has many more applications, thus interesting. Under the hood, your combined Sigmas, they first Unwrap. Matrices don't exist in computing Machinery. Matrices exist as serialised components. The "BombCompute Mathcad 11", copy/paste a fair size matrix [16000000 per say] takes substantial time. "Warning: the requested operation may take long time". Can't be more true. Cppy/paste 16000000 vector: NO warning message... done. Chers, Jean 
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Thank you Andrey.
The problem on Smath file crash is now solved. |
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka |
1 user thanked ndtma for this useful post.
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Originally Posted by: ndtma Thank you Andrey.
The problem on Smath file crash is now solved. "now solved", maybe not so wrt matrix manipulation. Observe the matrix scale code: M-Min(M) I found out this built-in code is weak, prone to failure with incorrect error message " Matrix is not invertible". There is no matrix inversion involved. Observe the robust code doing same. Example has low numerical values. At values in the order of 10^10, module [1] fails. Jean Utilities Matrix Scale.sm (15kb) downloaded 21 time(s).
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1 user thanked Jean Giraud for this useful post.
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