ZainMehdi's profile - activity

Hi, I am trying to build occupancy grid map in ros using laser data but have no idea from where to start. I dont want to use completely self built package as I am not allowed to use gmapping or hecor. Can anyone please point me in the right direction.

Thanks alot for your answer but I am having the same issue. When continuous : true is set it doesn't display anything i

Same issue here . Were you able to find a solution ?

Can you please explain a bit more on what do you mean by ros ? If you have nema motor you can just create stepping seque

Can you please explain a bit more on what do you mean by ros ? If you have nema motor you can just create stepping seque

Hi, I am trying to use Iris Lama slam package with YD Lidar to create grid map. I am using following commands to run slam and lidar node ( Launch files also attached)

Lidar Launch File :

<launch>
  <node pkg="sc_mini" type="sc_mini" name="sc_mini" output="screen">
    <param name="frame_id" type="string" value="laser_link"/>
    <param name="port" type="string" value="/dev/sc_mini"/>
    <param name="baud_rate" type="int" value="115200"/>
  </node>

 <node pkg="tf" type="static_transform_publisher" name="base_link_to_laser"
    args="0.0 0.0 0.0 0.0 0.0  0.0 /base_link /laser_link 40" /> 
</launch>

roslaunch sc_mini start.launch

rosrun iris_lama_ros slam2d_ros _scan_topic:=/scan  _base_frame_id:base_link

There is a static transform between base_link and laser_link.

The issue is that all the messages from the laser are dropped by scan node with following error message

[ WARN] [1629945657.272627698]: MessageFilter [target=odom ]: Dropped
100.00% of messages so far. Please turn the [ros.iris_lama_ros.message_filter] rosconsole logger to DEBUG for more information.


[DEBUG] [1629945661.171888142]: MessageFilter [target=odom ]: Removed oldest message because buffer is full, count now 100 (frame_id=laser_link, stamp=1629945651.173065) [DEBUG] [1629945661.171907816]: MessageFilter [target=odom ]: Added message in frame laser_link at time 1629945661.172, count now 100

It works fine when I use bag file from this link

https://msadowski.github.io/iris-lama...

Would be thankful for any insight.

I am answering it myself. First of all Iris_lama needs odometry source. If you are like me just trying it out with a 2d

I am answering it myself. First of all Iris_lama needs odometry source. If you are like me just trying it out with a 2d

Messages being dropped by IRIS Lama Node using YD Lidar Laser Scanner Hi, I am trying to use Iris Lama slam package wit

Messages being dropped by IRIS Lama Node using YD Lidar Laser Scanner Hi, I am trying to use Iris Lama slam package wit

"On another computer installed ros kinetic. And repeated the process. The rrbot correctly display and joint_state_publis

"On another computer installed ros kinetic. And repeated the process. The rrbot correctly display and joint_state_publis

"On another computer installed ros kinetic. And repeated the process. The rrbot correctly display and joint_state_publis

On another computer installed ros kinetic. And repeated the process. The rrbot correctly display and joint_state_publish

Please provide description to your question again here. Seems like your previous query has been wiped out. I cant access

These are links for your local files. I cant see them with this link..

whats the error message ?

It works. Just had to remove export tag from package.xml. Thanks alot

I created rviz plugin following these tutorials . However I was wondering how can I remove them. I couldnt find any documentation/guidelines for it. Please provide any hints / suggestions.

Thanks

I had this problem in Ubuntu . What I did was to purge all ros and then reinstall with minimal version and install gazeb

How to remove custom Rviz Plugin I created rviz plugin following these tutorials . However I was wondering how can I rem

EDIT:

I installed following package link text as mentioned in instructions. Now I want to use this package in my Cmakelist.txt so that I can use it in my program. I tried

find_package(RRR)

but it gives me error related to package config file. I have series of .hpp files in my source directory. I either want to convert them to a library file or add the whole package so that I can use them in my source files as headers.

Hi, I have been learning g2o to optimize once I have a graph i.e. back-end during my graph slam algorithm implementation. But the issue is I don't have any idea how to build a pose graph from laser data. Lets assume I have bag file that contains all recorded measurement. Then how should I proceed and use this data to generate nodes and edges for my graph. PS: I have read some methods like ICP and dense scan matching that can be used to add edges (constraints) between successive poses. But there application and implementation is naive to me. Kindly help