How to delete a column of an array?

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lucca k
lucca k 2015-11-2
评论： lucca k 2015-11-2
Hello,
I have a n by 3 single array. As I want to plot just the x and y data, I need to delete the z column in that array. Could you please tell me how that is done?
Thanks in advance!
Lucca

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采纳的回答

Dima Lisin
Dima Lisin 2015-11-2
You do not have just an array of points. You have one pointCloud object, which contains an array of x,y,z coordinates in the Location property. So you can do this:
array = ptCloud.Location(:, 1:2);
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lucca k
lucca k 2015-11-2
Thank you this works, but in the array there are 480 x and y values now. Before there have been 80 000. Do you know why?

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Adam
Adam 2015-11-2
array = array(:,1:2);
or
array(:,3) = [];
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Adam
Adam 2015-11-2
编辑：Adam 2015-11-2
I am not familiar with 'PointCloud', but I assume it is a class that is used for 3d point representations so just throwing away the 3rd column would not work in that case.
You need to give more information about what pointCloud is and the structure of your array for that case.

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