Sign in
Search matlab
Subscribe to matlab
Ads
Discussion Groups
See Also
Discussion Groups | Matlab DSP | Adding Rows to a Matrix
Hi Could somebody please help. Inside a loop I generate a (1X5)vector. At each step I want to include this vector as a new row of a matrix...
Is this thread worth a thumbs up?
Adding Rows to a Matrix - camdmag - Apr 14 12:42:00 2005
Hi
Could somebody please help.
Inside a loop I generate a (1X5)vector. At each step I want to
include this vector as a new row of a matrix. So, for example, after
10 times through the loop I will have generated a (10X5) matrix.
Is there a quick way of doing this?
Any help would be much appreciated.
Thanks
Cal
______________________________
New Code Sharing Section now Live on DSPRelated.com. Learn about the Reward Program for Contributors here.
(You need to be a member of matlab -- send a blank email to matlab-subscribe@yahoogroups.com )
Re: Adding Rows to a Matrix - V Ravi Chander - Apr 15 9:41:00 2005
hi cal,
if 'b' is the 1X5 vector generated inside the for loop, and 'a' is the
10X5 matrix that you need,
for i=1:10
%some processing to obtain b
a(i,:)=b;
%or a=[a;b];
end
regards,
Ravi > Hi
>
> Could somebody please help.
>
> Inside a loop I generate a (1X5)vector. At each step I want to
> include this vector as a new row of a matrix. So, for example, after
> 10 times through the loop I will have generated a (10X5) matrix.
>
> Is there a quick way of doing this?
>
> Any help would be much appreciated.
>
> Thanks
>
> Cal --
V Ravi Chander,
Emerging Technologies and Services Group,
Reliance Infocomm Ltd.
(You need to be a member of matlab -- send a blank email to matlab-subscribe@yahoogroups.com )
Re: Adding Rows to a Matrix - dutmatlab - Apr 16 5:18:00 2005
Hi,
two solutions :
A=[];
for n=1:10
A=[A rand(1,5)];
end
or
A=zeros(10,5);
for n=1:10
A(n,:)=rand(1,5);
end
The second one should be faster because matrix A is pre-alocated.
Jérôme
(You need to be a member of matlab -- send a blank email to matlab-subscribe@yahoogroups.com )