How to save the figure generated by pcplayer

Question

Daigo 2024-6-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2125081-how-to-save-the-figure-generated-by-pcplayer

编辑： Adam Danz 2024-6-5

Hi, I visualize map points estimated by SLAM as a point cloud using the pcplayer. I am wondering if there is a programatic way to save the plot as a video or a figure file. I tried using saveas() function but the object created by pcplayer is different from the figure handle.

For example, suppose I have a steam of 3D point cloud data like below. What would be the best way to save the stream as a video?

player = pcplayer([0 1],[0 1],[0 1]);
while isOpen(player) 
     ptCloud = pointCloud(rand(1000,3,"single"));
     view(player,ptCloud);           
end 

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Answer 1

Adam Danz 2024-6-3

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2125081-how-to-save-the-figure-generated-by-pcplayer#answer_1466851

编辑：Adam Danz 2024-6-5

在 MATLAB Online 中打开

Get the figure handle from the player object produced by pcplayer.

Use VideoWriter to create a VideoWriter object and use getframe to write the figure frame on each iteration to the video.

v = VideoWriter("myvideo.avi");
cleanupVideo = @()close(v);
open(v)
player = pcplayer([0 1],[0 1],[0 1]);
fig = ancestor(player.Axes,'figure'); 
for i = 1:100 % <-------------here's your update loop
    if ~isOpen(player)
        continue
    end
    ptCloud = pointCloud(rand(1000,3,"single"));
    view(player,ptCloud);
    frame = getframe(fig);
    writeVideo(v,frame)
end 
clear('cleanupVideo') % not needed if this is in a function 