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2022-03-02 10:11:01 -0500 received badge  Student (source)
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2020-07-22 00:02:36 -0500 edited question How to update moveit manipulator to reflect position in world frame

How to update moveit manipulator to reflect position in world frame Hi, I'm getting started with moveit and I'm going

2020-07-22 00:00:19 -0500 asked a question How to update moveit manipulator to reflect position in world frame

How to update moveit manipulator to reflect position in world frame Hi, I'm getting started with moveit and I'm going

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2020-05-07 13:33:38 -0500 commented answer What is the meaning of the effort or velocity on urdf model

"The effort limit is an attribute of the limit tag. In this case, a controller cannot command an effort of more than 30

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2019-11-02 12:56:21 -0500 edited question Rqt plugin segfault

Rqt plugin segfault Hey, I'm trying to run my rqt plugin but Im running into a segfault which I'm not able to debuG.

2019-11-02 12:48:26 -0500 edited question Rqt plugin segfault

Rqt plugin segfault Hey, I'm trying to run my rqt plugin but Im running into a segfault which I'm not able to debuG.

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2019-11-02 12:46:58 -0500 asked a question Rqt plugin segfault

Rqt plugin segfault Hey, I'm trying to run my rqt plugin but Im running into a segfault which I'm not able to debuG.

2019-11-02 12:46:58 -0500 asked a question Rqt plugin segfault

Rqt plugin segfault Hey, I'm trying to run my rqt plugin but Im running into a segfault which I'm not able to debuG.

2019-11-02 12:46:57 -0500 asked a question Rqt plugin segfault

Rqt plugin segfault Hey, I'm trying to run my rqt plugin but Im running into a segfault which I'm not able to debuG.

2019-10-03 11:30:17 -0500 commented answer Can material colors be applied to Collada (.dae) meshes?

By changing the values in <emission> <color sid="emission" x y z 1</color> </emission>

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2017-07-12 09:03:53 -0500 edited answer Using Eigen libraries in ROS

I have installed the Eigen headers at /usr/local/include/Eigen3/. (I downloaded stable eigenxxx.tar.gz. Extracted and

2017-07-12 09:02:14 -0500 answered a question Using Eigen libraries in ROS

I have installed the Eigen headers at /usr/local/include/Eigen3/. (I downloaded stable eigenxxx.tar.gz. Extracted and

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2016-03-27 19:23:11 -0500 commented answer Dijkstra Global Path Planner

I am not able to figure out how the path(grid cells) returned by Dijkstra is used by the gradient descent algorithm. Any thoughts? I thought that gradient descent alone could be used to generate required path.

2015-11-06 01:17:19 -0500 commented answer Subscribe to lidar node on another machine and run rviz

Generally the Laserscan messages of the /scan topic of a lidar are assigned to the 'laser' frame. Try typing in 'laser' in the 'fixed frame' tab in rviz and see if that lets you visualize the scans.

2015-11-05 12:45:11 -0500 commented question Subscribe to lidar node on another machine and run rviz

Does your subscriber on MachineB publish anything? If you are modifying the incoming laser data and then re-publishing it, you could then on rviz, view only the new 're-published' topic.

2015-11-03 21:00:24 -0500 asked a question Why is a service call being blocked inside a program but can be made from command line?

Hi,

I'll briefly explain what I am trying to accomplish and then Ill talk about the problem I a running into.

I have attempted to configure a custom costmap layer that is advertising a particular service SRV. When I try invoking this service from within my node it seems to be getting blocked. This is happening when I advertise a static_tf between the base link and map from my launch file. When I use costmap_2d without this transform in place, warnings are issued saying that the particular map -> base_link transformation is needed. This same SRV when invoked through rosservice call through command line responds as it should.

I am not able to figure out the connection between the static_tf and SRV if any.

I went through the tutorials for configuring layered costmaps but I didnt understand that completely.

Any help is much appreciated. (Also, this is my first time posting here, so any f/b w.r.t the structure of the question is welcomed)

This is my launch file:

<?xml version="1.0"?>
<launch>

<!--  <node name="static_tf0" pkg="tf" type="static_transform_publisher" args="2 0 0 0 0 0 /map /base_link 100"/> -->


   <node name="map_server" pkg="map_server" type="map_server" args="$(find custom_costmap)/maps/map_levine4th.yaml"/> 

   <node pkg="custom_costmap" type="set_region_cost" name="set_region_cost" output="screen">

   <rosparam file="$(find custom_costmap)/params/minimal.yaml" command="load"/>
   </node> 
</launch>

This is my minimal.yaml:

 my_costmap:
 # must match incoming static_map
 global_frame: 'map'
 resolution: 0.05
 robot_base_frame: 'base_link'
 plugins: 

    - {name: static_map,       type: "costmap_2d::StaticLayer"}
    - {name: simple_layer,     type: "custom_costmap::SimpleLayer"}   

 static:
    map_topic: /map
#    subscribe_to_updates: false

 simple_layer:
     map_topic: /map

 publish_frequency: 1.0
 footprint: [[-0.325, -0.325], [-0.325, 0.325], [0.325, 0.325], [0.46, 0.0], [0.325, -0.325]]
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