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2014-10-07 20:25:47 -0500 commented answer Bool state is incorrect when retrieved from param server

great! thinks!

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2014-09-29 07:32:12 -0500 asked a question Bool state is incorrect when retrieved from param server

The code is:

ros::NodeHandle nh_private("~");     
bool state=false;

nh_private.param<bool>("state", state, "false");

It turns out the "state" is "true". Why???

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2012-06-12 22:32:29 -0500 answered a question Generate Octomap RGBD-SLAM

I got the same error

2011-09-02 12:19:27 -0500 marked best answer vlsam rviz error

vslam is unsupported experimental research code. It is not actively being supported, but patches are welcome.

However, this appears to be a problem with rviz rather than with vslam. Instead of loading the vcg, try adding the pose markers and points to rviz manually.

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2011-08-31 02:07:47 -0500 answered a question vslam: where is the file " current.rtc"?

Just in case some newbies have the same problem: the "current.rtc" comes from the other package "calonder_descriptor", so the solution is simple: install this package from the source.

2011-08-31 01:16:23 -0500 asked a question vlsam rviz error

The command "rosrun rviz rviz -d --sync simple_vslam.vcg" worked very well before I upgrade my Ubuntu system. Now it just shows the errors:

The program 'rviz' received an X Window System error. This probably reflects a bug in the program. The error was 'BadWindow (invalid Window parameter)'. (Details: serial 29 error_code 3 request_code 138 minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)

Anyone has the same problem? My system right now is Ubuntu natty 11.04

2011-08-30 06:35:26 -0500 asked a question vslam: where is the file " current.rtc"?

I would like to run vslam on my own datasets, but it can not find the current.rtc. I checked the 'data' folder, no current.rtc inside. However, my stereo data runs smoothly on the ROS:vslam using the original setting file "stereo_vslam.launch".

My question is what the current.rtc is? How could I find it?