No module named genrb.generator #35

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1. OTL commented on Mar 22, 2016

   

   OTL

   on Mar 22, 2016

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   Hi,
   thank you for testing rosruby!!!

   I have not tested these packages these days, so i dont know if these works well recent ros system.

   Could you tell me your environments?
   OS(ubuntu14.04?osx10.10? or...) and ros distro(indigo?jade? or...)
2. zfxw0206 commented on Mar 22, 2016

   

   zfxw0206

   on Mar 22, 2016

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   ubuntu 14.04 and ros indigo
3. OTL commented on Mar 22, 2016

   

   OTL

   on Mar 22, 2016

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   i see, i'll check it.
   thanks
   2016/03/22 22:15 "zfxw0206" notifications@github.com:

   ubuntu 14.04 and ros indigo

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   #35 (comment)
4. OTL commented on Mar 23, 2016

   

   OTL

   on Mar 23, 2016

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   I fixed and uploaded as indigo-devel branch.

   https://github.com/OTL/rosruby/tree/indigo-devel

   Could you try it?

   At least it works in develop environment (I mean that ~/catkin_ws/src/rosruby, genrb) on Indigo/ Ubuntu14.04

   👍React with 👍1Reacted by zfxw0206
5. zfxw0206 commented on Mar 28, 2016

   

   zfxw0206

   on Mar 28, 2016

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   Yes, I tried the publisher and subscriber sample code, it works. Thank you very much!
   But when I change the message type from string to boolean, there is a problem.
   Here is my code
   Publisher:
   #!/usr/bin/env ruby

   require 'ros'
   require 'std_msgs/Bool'

   node = ROS::Node.new('/rosruby_sample_publisher')
   publisher = node.advertise('/chatter', Std_msgs::Bool)
   msg = Std_msgs::Bool.new
   while node.ok?
   msg.data = 1
   publisher.publish(msg)
   sleep(1.0)
   end

   Subscriber
   #!/usr/bin/env ruby
   require 'ros'
   require 'std_msgs/Bool'

   node = ROS::Node.new('/rosruby_sample_subscriber')
   node.subscribe('/chatter', Std_msgs::Bool) do |msg|
   puts "message come! = '#{msg.data}'"
   end
   while node.ok?
   node.spin_once
   sleep(1)
   end

   I ran "rostopic echo /chatter", I could get the data be "true".
   And when I ran "rostopic info /chatter", I got:
   Type: std_msgs/Bool
   Publishers:

   • /rosruby_sample_publisher (http://igr-XPS-8700:57335/)

   Subscribers:

   • /rosruby_sample_subscriber (http://igr-XPS-8700:58021/)

   After running the subscriber code, it should print "message come! ...", but It print nothing.
   Can you tell me what is wrong with me? Thank you again!
6. OTL commented on Mar 28, 2016

   

   OTL

   on Mar 28, 2016

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   Oh, that is bug of genrb.
   I pushed genrb to fix it, could you update genrb, and try to rebuild?

   $ cd ~/catkin_ws/src/genrc
   $ git pull
   $ cd ~/catkin_ws
   $ catkin_make

   then, you'll able to use bool message like below.
   (you can use same subscriber)

   #!/usr/bin/env ruby
   
   require 'ros'
   require 'std_msgs/Bool'
   
   node = ROS::Node.new('/rosruby_sample_publisher')
   publisher = node.advertise('/chatter', Std_msgs::Bool)
   msg = Std_msgs::Bool.new
   while node.ok?
     msg.data = true #<- bool!
     publisher.publish(msg)
     sleep(1.0)
   end

   Thank you for great contribution!
   It might have some trouble in more complicated message, i'm very happy if you let me know.
7. zfxw0206 commented on Mar 29, 2016

   

   zfxw0206

   on Mar 29, 2016

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   Yes, it is working now. Thank you!
   Now I want to use rosruby to trigger my camera. The sample code is here.This code will set PCIC and send the command to the camera. Is it possible to use rosruby to run this code?
8. OTL commented on Mar 29, 2016

   

   OTL

   on Mar 29, 2016

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   You're welcome!
   I believe it is possible.
9. zfxw0206 commented on Mar 29, 2016

   

   zfxw0206

   on Mar 29, 2016

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   I tried it just now. It works. Thank you!
10. zfxw0206 commented on Apr 29, 2016

    

    zfxw0206

    on Apr 29, 2016

    Last edited by zfxw0206

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    I am sorry, these days, I rebuild my catkin space, I got the same problem "No module named genrb.generator" again. I did nothing with it. Can you help me again? Thank you!
11. nxdefiant commented on Jul 15, 2019

    

    nxdefiant

    on Jul 15, 2019

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    I just had the same error. Problem was I forgot to source the catkin folder setup script.

    (Yes I know older question)