legend for plot3 command

I am going to plot two 3D data with the help of below command lines.

How can I insert legend for both the 3D data in a single window?

plot3(x,y,z);

hold on;

plot3(xx,yy,zz);

Answer 1

[Adam Danz]

Use the DisplayName property of graphics objects to specify the legend string.

plot3(x,y,z, 'DisplayName', 'Object1');
hold on;
plot3(xx,yy,zz, 'DisplayName', 'Object2');
legend()

or

p1 = plot3(x,y,z, 'DisplayName', 'Object1');
hold on;
p2 = plot3(xx,yy,zz, 'DisplayName', 'Object2');
legend([p1,p2])

[Indrajit Roy]

Thank you it's working now.

But, We've to take care vector dimension very carefully.Otherwise it'll show erros when concatenating.

[Adam Danz]

If p1 and p2 are not single objects, you can concatenate them vertically,

legend([p1;p2])

Or selection 1 element

legend([p1(1), p2(1)])

Is that what you're referring to?

[Indrajit Roy]

Sorry for late reply...

• If x,y,z vectors are of 2×2 dimension
• and xx,yy,zz are of 1×2

then this error will appear:

''Error using horzcat

Dimensions of arrays being concatenated

are not consistent.''

I was pointing this issue.

[Adam Danz]

I understood. My previous comment shows what to do under those circumstances.

Another alternative:

legend([p1(:);p2(:)])