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

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Paul
Paul 2021-6-22
评论： Paul 2022-5-25
Ran in:
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 个评论
Paul
Paul 2022-5-25
Ran in:
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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采纳的回答

Divija Aleti
Divija Aleti 2021-7-6
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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