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Cartographer 2d slam: BAD RESULTS

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Hello, It's taking forever to produce a refine map for cartographer. I am tuning it for days but the results are EXTREMELY bad. I am using odometry and 2d lidar. Below is the screen shot for cartographer: ![image description](/upfiles/15284052876512808.png) while for the same bag file, gmapping created an excellent map as follows: ![image description](/upfiles/1528405330971961.png) Below are the files for producing results for cartographer: ---------- project Files: https://github.com/letsdoitagain/cartographerIssue bagfile: https://drive.google.com/file/d/1CM9fc06Cdgl7QrrGfBSrxvq-NOpCQ_Nv/view

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