BSXFUN Non-singleton dimensions of the two input arrays must match each other

SV= 5x3 double 
-942906.419536844	313828.010191792	-97267.0565510760
-3230319.32628628	274998.490952776	-360706.320861567
-3654652.46885917	188670.898935597	-360709.467463522
-3154108.93174870	356508.559368121	-274070.151413514
-518048.989052842	163395.251935092	-97278.8122561220

NED= 15x3 double
0.171851776223634	0.562101832252225	0.809016994374948
-0.0984473987127902	0.621572412738697	0.777145961456971
-0.152246381942301	0.610626885893996	0.777145961456971
-0.0856835166627207	0.609669900169326	0.788010753606722
0.220188231021396	0.544984995878047	0.809016994374948
0.956304755963035	-0.292371704722737	0
0.987688340595138	0.156434465040231	0
0.970295726275997	0.241921895599668	0
0.990268068741570	0.139173100960065	0
0.927183854566787	-0.374606593415912	0
0.236533677795068	0.773666799375683	-0.587785252292473
-0.121572412738697	0.767578005071649	-0.629320391049837
-0.188008624153297	0.754061405094349	-0.629320391049837
-0.109669900169326	0.780341887121718	-0.615661475325658
0.303063100278379	0.750107495254601	-0.587785252292473

M=bsxfun(@times,NED,SV);

Error using bsxfun
Non-singleton dimensions of the two input arrays must match each other.

I am just trying to multiply these two matricies (I believe element by element), I don't understand why the zeros must match each other (my interpretation of the error)

[Stephen23]

"I am just trying to multiply these two matricies (I believe element by element)"

Please tell us the exact size of the expected output.

[olivia]

I do not know the exact size, my estimate is a 15x3. The example I am going off of was a 3x3 by a 3x1 that output a 3x1. I am estimating my output to be a 15x3.

[Stephen23]

"I do not know the exact size, my estimate is a 15x3."

Lets consider row 6 of matrix NED:

0.956304755963035	-0.292371704722737	0

What exactly do you want to multiply this row with?

Please show the expected out of multiplying NED(6,:) with... whatever it is that you want to multiply it with.

[olivia]

That should be multiplied by the first row of SV:

-942906.419536844 313828.010191792 -97267.0565510760

[Dyuman Joshi]

3x3 and 3x1 are compatible for element wise multiplication.

15x3 and 5x3 are not compatible for element wise multiplication. (They are also not comptaible for matrix multiplication)

Please go through this documentation page to learn more about compatible sizes for various operations - https://in.mathworks.com/help/matlab/matlab_prog/compatible-array-sizes-for-basic-operations.html

Edit - "That should be multiplied by the first row of SV:"

Do you want to multiply each row of NED with each row of SV?

Answer 1

[Stephen23]

"That should be multiplied by the first row of SV:"

I am guessing that you want to repeat SV so that it has as many rows as NED, and then multiply them together element-wise (a more accurate description would avoid the need to guess). Perhaps like this:

SV = [-942906.419536844,313828.010191792,-97267.0565510760; -3230319.32628628,274998.490952776,-360706.320861567; -3654652.46885917,188670.898935597,-360709.467463522; -3154108.93174870,356508.559368121,-274070.151413514; -518048.989052842,163395.251935092,-97278.8122561220]

SV = 5×3

1.0e+06 * -0.9429 0.3138 -0.0973 -3.2303 0.2750 -0.3607 -3.6547 0.1887 -0.3607 -3.1541 0.3565 -0.2741 -0.5180 0.1634 -0.0973

NED = [0.171851776223634,0.562101832252225,0.809016994374948; -0.0984473987127902,0.621572412738697,0.777145961456971; -0.152246381942301,0.610626885893996,0.777145961456971; -0.0856835166627207,0.609669900169326,0.788010753606722; 0.220188231021396,0.544984995878047,0.809016994374948; 0.956304755963035,-0.292371704722737,0; 0.987688340595138,0.156434465040231,0; 0.970295726275997,0.241921895599668,0; 0.990268068741570,0.139173100960065,0; 0.927183854566787,-0.374606593415912,0; 0.236533677795068,0.773666799375683,-0.587785252292473; -0.121572412738697,0.767578005071649,-0.629320391049837; -0.188008624153297,0.754061405094349,-0.629320391049837; -0.109669900169326,0.780341887121718,-0.615661475325658; 0.303063100278379,0.750107495254601,-0.587785252292473]

NED = 15×3

0.1719 0.5621 0.8090 -0.0984 0.6216 0.7771 -0.1522 0.6106 0.7771 -0.0857 0.6097 0.7880 0.2202 0.5450 0.8090 0.9563 -0.2924 0 0.9877 0.1564 0 0.9703 0.2419 0 0.9903 0.1392 0 0.9272 -0.3746 0

R = size(NED,1)./size(SV,1); % -> 3
out1 = NED .* repmat(SV,R,1)

out1 = 15×3

1.0e+06 * -0.1620 0.1764 -0.0787 0.3180 0.1709 -0.2803 0.5564 0.1152 -0.2803 0.2703 0.2174 -0.2160 -0.1141 0.0890 -0.0787 -0.9017 -0.0918 0 -3.1905 0.0430 0 -3.5461 0.0456 0 -3.1234 0.0496 0 -0.4803 -0.0612 0

If you really want to use BSXFUN and get the same result:

S = size(SV);
out2 = reshape(bsxfun(@times,...
    reshape(NED,S(1),R,S(2)),...
    reshape( SV,S(1),1,S(2))),size(NED))

out2 = 15×3

1.0e+06 * -0.1620 0.1764 -0.0787 0.3180 0.1709 -0.2803 0.5564 0.1152 -0.2803 0.2703 0.2174 -0.2160 -0.1141 0.0890 -0.0787 -0.9017 -0.0918 0 -3.1905 0.0430 0 -3.5461 0.0456 0 -3.1234 0.0496 0 -0.4803 -0.0612 0

checking:

isequal(out1,out2)

ans = logical
   1