What do you mean by delimiting the first octant? Do you want only positive x, y, and z values on your final plot?
Also, what do you do exactly when you project your data? Do you plot the (y,z) values on the plane corresponding to x=0? Or do you plot the (y,z) values that correspond to a certain value of x=cst?
In the example code below, I am plotting the data points (y,z), (x,z) and (x,y) on each plane defined by x = min(x), y=min(y) and z=min(z) respectively.
figure;
hold on;
scatter3(x,y,zeros(length(z),1)+min(z));
scatter3(x,zeros(length(y),1)+min(y),z);
scatter3(zeros(length(x),1)+min(x),y,z);
Does this seem like what you are trying to accomplish?
