how to get the value from the variable?

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Elysi Cochin 2014-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/129832-how-to-get-the-value-from-the-variable

评论： David Sanchez 2014-5-16

while executing a code i got a variable D... and its val when clicked from the workspace is as shown in the link below...

http://oi59.tinypic.com/2cxamok.jpg

Please can someone tell me what that symbol near D in workspace means... and how to copy the values of the D displayed into a variable as row vector.... the D displayed as val has 590 values downwards...

please can someone explain to me, then what that D dimension 1600*59 means....

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Answer 1

David Sanchez 2014-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/129832-how-to-get-the-value-from-the-variable#answer_137014

It's the symbol for a sparse matrix.

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Elysi Cochin 2014-5-16

how can i get the values to a row vector....

David Sanchez 2014-5-16

在 MATLAB Online 中打开

D is a 1600x59 array. To make it a single row vector:

[r c] = size(D);
D2 = reshape(D,1,r*c);

The values presented in val are the non-zero elements of your sparse matrix. You see the position of the non-zero element in the first column and its value in the second column. Elements not listed in var are 0.

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