notice wall
hello,
i am trying to program my robot so that he drives straight ahead until he is close to a wall or so, and then he should turn right or so... just drive ahead in a other way. So my question is, if i get my data from my sensors and make a map out of them, is there any way how i can use that information,or are there some packages at ros.org, to notice wehen i am to close to a wall? I am using a Hokuyu laser