MATLAB: Loop for scatter plot

scatter

I have four matrix A,B,C and D and each of them has a dimension of (56 rows, 4 coulms). I want to scatter the same column of each matrix with another matrix. X1=A(:,1),Y1=B(:,1);X2=A(:,2),Y1=B(:,2), …,X4=A(:,4),Y4=B(:,4) X5=A(:,1), Y1=C(:,1),X6=A(:,2),Y6=C(:,2),…,Xn=C(:,4), Yn=D(:,4)

I did it for one of them but don't know how to use a loop to make a seperate scatter plot for all of them. I am grateful foe your help.

X1=A(:,1) Y1=C(:,1) scatter(X1,Y1);

Best Answer

Like this?

plot([A,A,A],[B,C,D],'o')

EDIT Based on your comment, here's a new answer:

allX = [A,A,A];
allY = [B,C,D];
for k=1:size(allX,2)
    figure(k)
    scatter(allX(:,k),allY(:,k))
end

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MATLAB: How to shift and re plot 4 rectangles

Is this what you are trying to achieve?

x1 = -10;x2 = 10;x3 = 10;x4 = -10; y1 = -15; y2 = -15;y3 = 15;y4 = 15;
xrect = [x1 x2 x3 x4 x1] ; yrect = [y1 y2 y3 y4 y1] ; % original rectangle centered at [0,0]
shift = 5;
scale2 = 0.5; % change the size of the additional rectangle, originals' size is 1



scale3 = 0.2; % change the size of the additional rectangle, originals' size is 1
scale4 = 0.8; % change the size of the additional rectangle, originals' size is 1
scale5 = 0.3; % change the size of the additional rectangle, originals' size is 1
xrect2 =  x1 + xrect*scale2; yrect2 = y1 + yrect*scale2;
xrect3 =  x2 + xrect*scale3; yrect3 = y2 + yrect*scale3;
xrect4 =  x3 + xrect*scale4; yrect4 = y3 + yrect*scale4;
xrect5 =  x4 + xrect*scale5; yrect5 = y4 + yrect*scale5;
plot(xrect,yrect,xrect2,yrect2,xrect3,yrect3,xrect4,yrect4,xrect5,yrect5),axis([-60 60 -60 60])

MATLAB: How to use for loop to reduce the number of lines from the following code

This is MATLAB, so here is a much simpler solution without any loops:

M  = C1(1:399,5:11);
R  = mean(permute(M,[3,2,1]).*permute(M,[2,3,1]),3);
R0 = mean(M.*C1(1:399,13),1).';
B  = pinv(R)*(R0)

And compared against the output of your code:

>> isequal(A,B)
ans = 1

For MATLAB versions prior to R2016b you will need replace the .* operators with bsxfun and times.

Best Answer

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MATLAB: How to shift and re plot 4 rectangles

MATLAB: How to use for loop to reduce the number of lines from the following code

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