Division between elements of matrices - Сообщения
#1 Опубликовано: 12 лет назад
First of all, I think Andrey the work you do is astonishing and thanks to all the community, too.
I have a problem, waht is wrong?
I have a problem, waht is wrong?
Learning by doing
#2 Опубликовано: 12 лет назад
1. You should not use i's and j's as indices, because they also designate imaginary part of complex numbers. In some versions some of them, or both, cause errors when used otherwise.
2. You could use I and j as indices of k, not of C[k] or A[k].
It would be better if you attach the file.
Edit: Oh, it looks like you cannot assign anything to nested matrices...
Seems like you only can assign the whole new matrix to C[k].
2. You could use I and j as indices of k, not of C[k] or A[k].
It would be better if you attach the file.
Edit: Oh, it looks like you cannot assign anything to nested matrices...
Seems like you only can assign the whole new matrix to C[k].
С уважением,
Михаил Каганский
#3 Опубликовано: 12 лет назад
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Группа: Moderator
Hello,
Try this
[MATH=eng]for(k,range(1,rows(A)),line(for(i,range(1,rows(
),for(j,range(1,cols(),el(c,i,j):el(B,i,j)/el(el(A,k),i,j))),el(C,k):c,2,1))[/MATH]
[MATH=eng]C=mat(mat(4,2.5,2,1.75,1.6,1.5,3,2),mat(0.571,0.625,0.667,7,4,3,3,2),2,1)[/MATH]
It seems that direct assignment of a matrix element in a nested matrix is not allowed. Try to avoid such constructions - it will give trouble.
Regards,
Try this
[MATH=eng]for(k,range(1,rows(A)),line(for(i,range(1,rows(
),for(j,range(1,cols(),el(c,i,j):el(B,i,j)/el(el(A,k),i,j))),el(C,k):c,2,1))[/MATH][MATH=eng]C=mat(mat(4,2.5,2,1.75,1.6,1.5,3,2),mat(0.571,0.625,0.667,7,4,3,3,2),2,1)[/MATH]
It seems that direct assignment of a matrix element in a nested matrix is not allowed. Try to avoid such constructions - it will give trouble.
Regards,
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
#4 Опубликовано: 12 лет назад
The problem is in using nested indices on the left hand side. That does not work just as linear indexing of pre-allocated matrices does not work (would save a loop in the example).
Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
#5 Опубликовано: 12 лет назад
I thank you all!
Learning by doing
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