Settings for pure localization for cartographer_ros

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Hello. I wanted to do pure localization using cartographer. I have made the map as a .yaml file (which also points to .pgm). I have also successfully run slam using cartographer. However, since the map is not good I just wanna do pure localization. In the cartographer docs it says I have to give a "-load_state_filename argument" but I do not know where and how to do it. Also do I remove anything from my configuration file?

Thank you very much