how to convert collumn matrix (nxn) into another matrix of (mxn) type .

조회 수: 8 (최근 30일)
Parvinder  Singh
Parvinder Singh 2017년 10월 17일
댓글: Cedric 2017년 10월 17일
I am working on my project where audio encryption is needed .I am stuck in a problem of converting column matrix into (mxn) type matrix. please help me its urgent
  댓글 수: 2
KL
KL 2017년 10월 17일
What do you mean by "column matrix(nxn)"..?
Column matrix is supposed to have only one column, so it should rather be (nx1).
Parvinder  Singh
Parvinder Singh 2017년 10월 17일
I mean to say column vector of (nxn) form

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답변 (1개)

Cedric
Cedric 2017년 10월 17일
편집: Cedric 2017년 10월 17일
Difficult to answer with that little detail.. Maybe:
M = reshape( v, n, n ) ;
or
M = reshape( v, n, [] ) ;
with a transposition ( .' ) afterwards if needed.
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Parvinder  Singh
Parvinder Singh 2017년 10월 17일
편집: Cedric 2017년 10월 17일
During the usage of RESHAPE function i have to mention that how many rows and column matrix we need.But in my case we have to assume n number of column vector which we have to transform in (mxn) . if i use reshape function then it looks like:-
a=audiorecorder(8000,8,1);
disp('start recording');
recordblocking(a,5)
disp('stop recording');
play(a);
b=getaudiodata(a);
double (s);
s= reshape (double(b), m, n);
here in our case we want m and n value by some logic rather look at the column vector value. Suggest me some logic and thanks for your previous suggestion.
Cedric
Cedric 2017년 10월 17일
I just don't understand what you want to achieve. After you stop recording, variable b is a 40000x1 vector. What do you want to do with it and why? Why a matrix?

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