MATLAB: Loop to create 3×3 matrix for each frame

for loop

I want to build a 3×3 Matrix from 3 vectors.

R.fcsR = [Xn.fcsR; Yn.fcsR; Zn.fcsR];

I have captured a movement of a point over 247 frames. How can I make a for loop, so that for every frame a new 3×3 matrix is created. Thanks for your help.

Oli

Best Answer

Does this do what you want:

R.fcsR = zeros(3,3,247);
for i = 1:247
    R.fcsR(:,:,i) = [Xn.fcsR(i,:); Yn.fcsR(i,:); Zn.fcsR(i,:)];
end

Related Solutions

MATLAB: How to properly sum 3D matrixes

Use this function:

function M=sumnd(M,dim)
s=size(M);
M=permute(M,[setdiff(1:ndims(M),dim),dim]);
M=reshape(M,[],s(dim));
M=sum(M,2);
s(dim)=1;
M=reshape(M,s);
end

Code:

A=sumnd(M,3) ;
A = simplify(A) ;

Result:

[ x1*y1*(z1 + z2 + z3), x1*y2*(z1 + z2 + z3), x1*y3*(z1 + z2 + z3)]
[ x2*y1*(z1 + z2 + z3), x2*y2*(z1 + z2 + z3), x2*y3*(z1 + z2 + z3)]
[ x3*y1*(z1 + z2 + z3), x3*y2*(z1 + z2 + z3), x3*y3*(z1 + z2 + z3)]

MATLAB: How to make space underneath the lines white opaque in 3D plot

A relatively simple way is to use the patch function:

[xn,yn] = meshgrid(linspace(0,0.5,14),linspace(-15,15,100));
zn = exp(-2*yn.^2).*xn;
figure
patch(xn,yn,zn,'w', 'EdgeColor','none')
hold on
plot3(xn,yn,zn,'b')
hold off
set(gca,'ylim',[-10,10],'zlim',[0,2]);
box off
campos([-2.3393; -134.9790;   -2.2455])
view(45,15)

Best Answer

Related Solutions

MATLAB: How to properly sum 3D matrixes

MATLAB: How to make space underneath the lines white opaque in 3D plot

Related Question