4D scatterplot with one indicator value

Hello,

I have four vectors: s1, s2, s3 as parameter vectors and vector i with indicator values of 0 or 1.

I would like to plot all s1-s2-s3 parameter combinations with value i = 1 with one color and all other s1-s2-s3 parameter combinations with value i = 0 with another color.

Thank you.

Answer 1

[Walter Roberson]

pointsize  = 8;
[s1g, s2g, s3g] = ndgrid(s1, s2, s3);
scatter3(s1g, s2g, s3g, pointsize, i);
colormap([1 0 0;0 1 0]);

However, before you do this, you will have to convert i from being a vector to being a matrix defined at each s1 x s2 x s3 possibility.

[Tom]

Thanks, but I am not sure if I understand you correctly about coverting the vector to being a matrix. I did:

INEQ = [i DLparams1 DLparams2 DLparams3]

pointsize = 8;

[s1g, s2g, s3g] = ndgrid(DLparams1, DLparams1, DLparams1);

scatter3(s1g, s2g, s3g, pointsize, INEQ);

colormap([1 0 0;0 1 0]);

Error message.

[Walter Roberson]

Now that I think of it, I was wrong about wanting to do the reshape.

If DLparams1 and DLparams2 and DLparams3 and "i" are vectors that are all the same length, then

pointsize = 8;

scatter3(DLparams1, DLparams2, DLparams3, pointsize, i);

colormap([1 0 0;0 1 0]);