How to plot 3D contour in real-time for the shortest time?

2 次查看（过去 30 天）
Denis Perotto
Denis Perotto 2019-2-12
I need to plot 3D contour in real-time layer-by-layer. I got it already, that MATLAB does not have a standard function for 3D contour plot ( color = f(x,y,z) ), so I plot my graph dot-by-dot using a 'scatter3' function like this:
X = 10; Y = 20; Z = 50;
c = cell(X,Y,Z);
for i = 1:X
for j = 1:Y
for k = 1:Z
c{i,j,k} = [(i-1)/X (j-1)/Y (k-1)/Z randi(5)];
end
end
end
zcount = 2;
figure
while zcount <= Z
cla;
for k = 1:zcount
for i = 1:X
for j = 1:Y
clr = clrdet(c{i,j,k}(4));
scatter3(c{i,j,k}(1),c{i,j,k}(2),c{i,j,k}(3),...
'MarkerFaceColor',clr,'MarkerEdgeColor',clr);
drawnow;
hold on;
axis equal;
grid on;
end
end
end
zcount = zcount + 1;
end
function res = clrdet(int)
switch int
case 1
res = 'r';
case 2
res = 'g';
case 3
res = 'b';
case 4
res = 'c';
case 5
res = 'm';
otherwise
res = 'k';
end
end
The execution of my code takes a lot of time (about 0.5 sec a layer), when the whole contour should be plot in less than 0.4 seconds. Can you, please, suggest me, how to speed up my code? Maybe there is a way to plot 2D contour (XY section) on 3D graph?

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