Isosurface plots appear 2d when used with subplot
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Hi all,
I'm trying to put together some isosurface plots using subplot. I want them to be 3d and rotatable. However, when I try using subplot together with isosurface, the plots appear 2d and are not rotatable. What am I missing? Consider the following, for instance:
[x,y,z] = meshgrid([-3:0.25:3]);
V = x.*exp(-x.^2 -y.^2 -z.^2);
for i=1:4
subplot(2,2,i);
isosurface(x,y,z,V,1e-4);
end
2 Comments
Saksham Gupta
on 22 Jun 2022
Edited: Saksham Gupta
on 22 Jun 2022
As per my understanding of your query, are unable to rotate subplots.
View function , when used with subplots ,can help in rotating each subplot individually.
Following code might be helpful to you:
[x,y,z] = meshgrid([-3:0.25:3]);
V = x.*exp(-x.^2 -y.^2 -z.^2);
for i=1:4
subplot(2,2,i);
isosurface(x,y,z,V,1e-4);
%Below line can be added
view(subplot(2,2,i),[10,10]);
end
Here ,[10,10] is a random elevation angle I have applied.
Answers (3)
Walter Roberson
on 25 Sep 2023
MATLAB has divides graphics calls into "high level" and "low level".
"High level" calls check whether hold is on, and if not then they erase the current axes before adding the graphics.
"low level" calls never check hold, and always go ahead and add the graphics.
There are some functions such text() that are always low level. line() is low level, but plot() is high level.
There are some graphics calls that are high level or low level depending on how you call them.
When you call isosurface() without any outputs then it calls patch() to draw the surface. It does that with a calling sequence that happens to be low level for patch. So when you call isosurface that way, the surface is just added to the current graphics, and higher level graphics functions are not invoked. In particular, view(3) is not automatically called by patch() the way it might be if a high level calling sequence had been used.
0 Comments
William Rose
on 22 Jun 2022
I find that if I click twice on the 3D rotate icon above each plot, I am able to rotate thenm. Here is a screenshot showing your four plots, with three of them rotated.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1041075/image.jpeg)
5 Comments
Yi Hui Tee
on 25 Sep 2023
Hi, did you get any reply on this? I am facing the same problem when trying to use subplot or nexttile.
Saksham Gupta
on 22 Jun 2022
As per my understanding, you are telling that whole image is coming in 1 color only and not in shades as it comes for single plot.
On inputing x again as a parameter to isosurface, subplots should have the relevant shading.
Below is the code I am using at my end :
[x,y,z] = meshgrid([-3:0.25:3]);
V = x.*exp(-x.^2 -y.^2 -z.^2);
for i=1:4
subplot(2,2,i);
isosurface(x,y,z,V,1e-4,x);
view(subplot(2,2,i),[10,10]);
end
0 Comments
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