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how to mark the north of map?

asked 2016-05-30 04:07:16 -0500

ligang
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Hello,everyone. I have a question. If I create a map by mapping? How to mark the north. we know that the image is rect.

but, if the north is not north, we will fail the get he correct map.

I want to know how to ensure the north is ok .

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answered 2016-05-30 08:30:48 -0500

dornhege

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gmapping doesn't have an idea of north. It starts, however the robot starts and then builds a consistent map relative to that. If you want to north the map, you can do that by starting the robot odom correctly set relative to north. Alternatively rotate the map afterwards, although there will be discretization errors.

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thanks for your help!

ligang ( 2016-05-31 04:52:18 -0500 )edit

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Asked: 2016-05-30 04:07:16 -0500

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Last updated: May 30 '16

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how to mark the north of map?