babis

2013 年からアクティブ

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質問

how to find specific columns using vectors
I have a matrix U (n*m) and vectors v(1)-v(m) [not the same size]. I want for every vector to find in the respective row (for ve...

11年以上前 | 1 件の回答 | 0

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質問

calculate values from different matrices
I have a matrix U (n*v). I want for every column to have a matrix that has the number of the non-zero rows. For example U= [1 1 ...

11年以上前 | 1 件の回答 | 0

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質問

non zero rows per column
i have a matrix. suppose A=[1 0 8; 0 0 2; 3 0 5; 4 8 0; 0 5 3; 6 1 3; 1 6 5; 0 7 1] and i want to get the non zero rows...

12年弱前 | 3 件の回答 | 0

3

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質問

find non zero elements put in a matrix
i have a matrix and i want to take the row number of every non-zero element per collumn into a new matrix

12年弱前 | 1 件の回答 | 0

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質問

how to split matrix by percentage
I have a matrix R(u,v) and i want to split into 2 new matrices M, N. M will be the first 10% of the rows of R and N will be t...

12年弱前 | 2 件の回答 | 0

2

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質問

new array using average row of the old array
I have an array M(1000,1000) and i want to build a new array N(1000,1000), where each element of N has the old value minus t...

12年弱前 | 1 件の回答 | 0

1

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質問

new array using average row of the old array
I have an array M(1000,1000) and i want to build a new array N(1000,1000), where each element of N has the old value minus the a...

約12年前 | 2 件の回答 | 0

2

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質問

convert an array to a new
I have an array M [100000*3]. I want to create a new array where the one dimension will be the 1st column of the array M, the ...

約12年前 | 1 件の回答 | 0

1

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