Should Behavior of sub2ind() be Different for Symbolic and Numeric Inputs?

2 vues (au cours des 30 derniers jours)
Paul
Paul le 22 Juin 2021
Commenté : Paul le 25 Mai 2022
maxrows = 1; r = 1; a = 1; c = 1; ii = false;
D = zeros(3,3,maxrows) % D is a double
D = 3×3
0 0 0 0 0 0 0 0 0
D(sub2ind([3,3,maxrows],a(ii),a(ii),r(ii))) = c(ii)
D = 3×3
0 0 0 0 0 0 0 0 0
D = zeros(3,3,maxrows,'sym') % now D is a sym
D = 
D(sub2ind([3,3,maxrows],a(ii),a(ii),r(ii))) = c(ii)
D = 
Why does sub2ind() change the dimension of D in the latter case?
  1 commentaire
Paul
Paul le 25 Mai 2022
Fixed in 2022a
maxrows = 1; r = 1; a = 1; c = 1; ii = false;
D = zeros(3,3,maxrows) % D is a double
D = 3×3
0 0 0 0 0 0 0 0 0
D(sub2ind([3,3,maxrows],a(ii),a(ii),r(ii))) = c(ii)
D = 3×3
0 0 0 0 0 0 0 0 0
D = zeros(3,3,maxrows,'sym') % now D is a sym
D = 
D(sub2ind([3,3,maxrows],a(ii),a(ii),r(ii))) = c(ii)
D = 

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Divija Aleti
Divija Aleti le 6 Juil 2021
Hi Paul,
The development team is working on resolving this issue. A task has been created for our development team about the bug report.
Thank you for your understanding and you will definitely be notified once the this issue is resolved.
Regards,
Divija

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