Create 3D effect of 2D line plot matlab [closed] - matlab

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Question, I have a line data. However I wanted to be plotted with a 3D effect, which you can also choose as an option, for instance, within Office Excel/Powerpoint.
Currently I have the code below which kind of mimmics the effect (simply putting a lot of plots after each other):
Excel:
Matlab:
Matlab code:
x = 1:10;
y = rand(1, 10);
z = rand(1, 10);
figure;
hold on;
for i = 1:20
hFill = fill3(i*0.01*ones(1, 12), x([1 1:end end]), [0 y 0], 'b', 'FaceAlpha', 0.5);
hFill = fill3((i*0.01*(ones(1, 12)))+2, x([1 1:end end]), [0 z 0], 'g', 'FaceAlpha', 0.5);
end
grid on;
xlim([0 10]);
view(3);

Answer 1

You could probably construct a closed surface in one single graphic object to represent your 3D curve, however I don't have time to work that out completely so I'll go the lazy way:
Instead of stacking multiple fill objects to give a 3d feeling, I build each curve with 3 objects:
A top surface, with the desired thickness
2 patch objects to close the sides
Here goes:
%% Sample data
rng(12)
x = 1:10;
y = rand(1, 10) + .5 ;
z = rand(1, 10) + .5 ;
%% Parameters
alphaTop = .5 ; % alpha value of the top of the surface
alphaSide = .5 ; % alpha value of the sides
thickness = .5 ; % thickness of each curve
separation = 1 ; % separation of each curve
colors = {'b';'r'} ; % color for each curve
%% prepare patch coordinates
xp = x([1 1:end end 1]) ;
yp1 = [0 y 0 0] ;
yp2 = [0 z 0 0] ;
zp1 = zeros(size(yp1)) ;
zp2 = zeros(size(yp2)) + 1 ;
%% Prepare surface coordinates
xs = [ xp; xp] ;
ys1 = [yp1;yp1] ;
ys2 = [yp2;yp2] ;
zs1 = zeros(size(xs)) ;
zs1(2,:) = zs1(2,:) + thickness ;
zs2 = zs1 + separation ;
%% Display
figure
hold on
% plot the sides (one patch on each side of each curve)
hp11 = patch(zp1 ,xp,yp1, colors{1} , 'FaceAlpha', alphaSide) ;
hp12 = patch(zp1+thickness,xp,yp1, colors{1} , 'FaceAlpha', alphaSide) ;
hp21 = patch(zp2 ,xp,yp2, colors{2} , 'FaceAlpha', alphaSide) ;
hp22 = patch(zp2+thickness,xp,yp2, colors{2} , 'FaceAlpha', alphaSide) ;
% plot the top surfaces
hs1 = surf(zs1,xs,ys1, 'FaceColor',colors{1},'FaceAlpha',alphaTop) ;
hs2 = surf(zs2,xs,ys2, 'FaceColor',colors{2},'FaceAlpha',alphaTop) ;
% refine plot
xlim([0 10]);ylim([0 10]); view(3);
xlabel('X') ; ylabel('Y') ; zlabel('Z') ;
Which yields:
Once this is built, you can regroup the graphic handles to group common properties assignments. For example:
%% Optional (modify common properties in group)
% regroup graphic handles for easy common property assignment
hg1 = [hp11;hp12;hs1] ;
hg2 = [hp21;hp22;hs2] ;
% set properties in group
set(hg1,'EdgeColor',colors{1},'FaceAlpha',0.2) ;
set(hg2,'EdgeColor',colors{2},'FaceAlpha',0.2) ;
To give your curves a nice transparent mesh style:
Ultimately, if you plan to apply this method to many curves, you should either package it in a function, or at least build your curves with a loop. It should be easy to convert as long as the parameters for each curve are in an array you can index into (like I did for the colors).