Is it possible to convert mesh or point cloud to grid map?

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Thank you for your reply!

As a result of checking grid map package you proposed, I found that grid map package can't convert to the grid map which turtlebot2 use for amcl_demo.

And could you tell me more detail of your proposed alternative method. I checked the link(link text) , but I couldn't understand what you mentioned.

@graziegrazie So when you have a organized dataset it will be easy for your to sample it. "The advantages of an organized dataset is that by knowing the relationship between adjacent points (e.g. pixels)". So using this you can build your 2D grid maps and get the rows and column accurately.

@arunavanag I found that the organized data means the ones like point cloud of structure. Yes, I have the ones. Thank you for your answer. I'll search more detail and try it with using PCL and so on.

No problem... however on the way in future you might just find pcl is not efficient enough as it slows down your process. At some point you want to have your own structs and classes to define your point cloud. Anyhow this is much ahead. Try out that first.