how to mark the north of map?

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 .

Asked by ligang on 2016-05-30 04:07:16 UTC

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Answers

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.

Asked by dornhege on 2016-05-30 08:30:48 UTC

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thanks for your help!

Asked by ligang on 2016-05-31 04:52:18 UTC