How to save the figure generated by pcplayer
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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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Accepted Answer
Adam Danz
on 3 Jun 2024
Edited: Adam Danz
on 5 Jun 2024
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
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