Create an array from others matrix
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I need to put "a" matrix one below the other in a single matrix. That is, I need to place in a matrix of dimension a*b x N, where the first b rows correspond to sec=1, from row b+1 to row 2b+1 the second matrix corresponding to sec=2, and so on.
For example for this code:
a=100;
b=5;
N=8;
for sec=1:a
PM=rand(b,N)
end
I want to create the matrix of dimension 500x8, formed by the 100 matrix generated, where the first 5 rows correspond to the matrix obtained for sec = 1, from row 6 to row 11 the second matrix corresponding to the matrix obtained for sec = 2, and so on.
3 个评论
Bob Thompson
2019-10-14
编辑：Bob Thompson
2019-10-14
Why do you want 6-11 to be for 2sec? There were only five rows for the first second.
Where is your data coming from? Or is it just randomly generated numbers?
Assuming that you have data, I would use something like the following:
for i = 1:100
data((i-1)*5+1:i*5,:) = rand(5,8);
end
Romina
2019-10-14
Bob Thompson
2019-10-14
Ok, well the indexing on 'data' should be what you're looking for. I can't write the right hand side of the equation for you because I don't know what it looks like.
采纳的回答
Fabio Freschi
2019-10-14
You can just append the matrices as they come.
a=100;
b=5;
N=8;
% inital empty matrix
PM = [];
% your loop
for sec=1:a
PM = [PM; rand(b,N)];
end
6 个评论
Fabio Freschi
2019-10-14
Of course you can also preallocate
a=100;
b=5;
N=8;
% inital zero matrix
PM = zeros(a*b,N);
% your loop
for sec=1:a
idx = (1:b)+(sec-1)*b;
PM(idx,:) = rand(b,N);
end
Romina
2019-10-14
Fabio Freschi
2019-10-14
If you can be more precise, I would try to help
Fabio Freschi
2019-10-14
If I understand correctly the method works. After this section:
...
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% I NEED SAVE IN A MATRIZ PotMem, this 10 Potenciales_Membrana matrix,
Potenciales_Membrana(t,1:N)=v
u=u+a.*(0.2*v-u);
STDP(:,t+D+1)=0.95*STDP(:,t+D);
end
put these lines
idx = (1:c)+(sec-1)*c;
PotMem(idx,:) = Potenciales_Membrana;
and in the end you should have PotMem filled with Potenciales_Membrana. Let me know if it is what you need.
Romina
2019-10-14
Fabio Freschi
2019-10-14
My pleasure! If my answer solve your original problem, please accept it!
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