gmapping resolution

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well, it think, it can not be, because I have measured the place and has max of 40-45 meters, and 1983*0.05 ans = 99.150

What coordinates are you talking about exactly ?

But, I may think that every 50 cells is a meter

How could that be ? What coordinates are you talking about exactly ? Where did you find them ?

The coordinates I have mentioned are the coordinates of the empty area of the global map, they have been taken from the /map topic under gmapping packege. The other issue here is how to relate the initial position of the robot with the origin of the local map.

I have seen the documentation, and they are 20 cells per meter so it gives a resolution of 0.05. I may have something wrong in the way I get the coordinates from the /map topic under gmapping packege

Well, if you look at here : ros.org/doc/api/nav_msgs/html/msg/MapMetaData.html they say that data from /map topics are given in meters and radians. And they also say in REP 105 that mobile platform's position is relative to the map's frame

Thnax for the answer, my issue is how to interpret it. I have measured the width of the map, 40-45 m, and I get map.info.width=1984, this means that 1984*0.05= 99.250m, something might be wrong.