矩阵的载体每行/列的元素方式乘法 [英] Element wise multiplication of every row/column of a matrix with a vector
问题描述
我有一个矩阵,命名为具有p_c_w尺寸6X7599,并命名为具有p_w尺寸1X7599其他矩阵。我希望有自己的元素方式乘法,但我无法做到这一点。对于p_c_w和p_w的列行大小是一样的,我已p_c_w的转置并将其存储在ANSS。错误我receving是:下标分配尺寸不符
code如下。任何人都可以请帮助?
感谢很多提前
ANSS = p_c_w
对于i = 1:尺寸(ANSS,1)
对于j = 1:尺寸(p_w,2)
。温度(J,I)= ANSS(I,J)* p_w(J);
结束
结束
使用的 bsxfun
:
A = [1 2 3 4 5;
1 2 3 4 5;
1 2 3 4 5];B = [1 10 100 1000 10000]。C = bsxfun(@倍,A,B)
返回:
C = 1 20 300 4000 50000
1 20 300 4000 50000
1 20 300 4000 50000
作品同样为 A
与 B
所以你的情况:
TEMP = bsxfun(@倍,p_c_w,p_w)
I have a matrix, named as p_c_w having dimensions 6X7599 and the other matrix named as p_w having dimensions 1X7599. I wish to have their element-wise multiplication but I am unable to do that. For size of rows of p_c_w and columns of p_w to be same, I have taken transpose of p_c_w and stored it in anss. Error I am receving is: Subscripted assignment dimension mismatch.
Code is below. Can anyone please help?
Thanks a lot in advance
anss=p_c_w'
for i=1:size(anss,1)
for j=1:size(p_w,2)
temp(j,i)=anss(i,j).*p_w(j);
end
end
use bsxfun
:
A = [ 1 2 3 4 5;
1 2 3 4 5;
1 2 3 4 5 ];
B = [ 1 10 100 1000 10000];
C = bsxfun(@times,A,B)
returns:
C =
1 20 300 4000 50000
1 20 300 4000 50000
1 20 300 4000 50000
Works the same for A'
with B'
so for your case:
temp = bsxfun(@times,p_c_w,p_w)
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