Point Cloud Plugin

Hey guys just out of curiosity, what would you use to export a point cloud that has information stored in an alpha channel? This is in regard to @anonymous_user_07ba773b earlier question for @.
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I’m producing my point clouds with Houdini, so it’s just a case of adding an alpha channel manually with whatever data I want. If you wanted to add an alpha channel to a point cloud you had in CSV, that would be pretty easy to do in Houdini too.