Wafaay's profile - activity

It didn't work ... I am using rosserrial-indigo and still have the same issue

Thank you ! ... I had the same issue ... I couldn't fix it using geographic-info ... It only worked using the apt command above.

hi... i was reading the Knowrob tutorials...and when i reached the section of Exporting knowledge into owl files at Loading Files And Ros Packages ..i had a problem... i already made an owl file through the protege....but it's classes aren't like that

                 <rdfs:subClassOf rdf:resource="&knowrob;Place"/>

it is like that

                 <rdfs:subClassOf rdf:resource="#Table"/>

it says that -at the tutorials - i can do "that" by using Knowrob_common through owl_export module...My first question is "that" refers to adding the knowrob meaning to my classes ??..to be more obvious is that is the operation of exporting knowledge to owl file is to gave the meaning to the classes at my owl file and it converting my file to have that "&knowrob"?? My Second Question is where can i find the illustration of knowrob_common..ty for helping ^_^

hi..we are a graduation project team works on the turtlebot ..we already bought icreate robot and we designed the the rest plates of the turtlebot and we had the sdk as it is available and on our way to start calibration we found that we have to know our gyro part number which as the following tutorial Calibrate Odometry and Gyro how can we know our gyro part number through our icreate robot base ??

answer was as Mr Ryan said :

"The iCreate robot does not have a gyro built in. You'll need to purchase a power board separately"

Editing :-

**Am i still able to perform navigation and VSLAM without the gyro sensor ?**

ops!!!...i am sorry to ask such naive question :( .. it was such a lack of concentration .. thanks very much ^_^

u mean to change the command from:- "rosrun map_server map_saver -f /tmp/my_map" to this one ?

hey everyone , hope you are all fine . After 2 months of working on our turtlebot to build our map using GMapping we finally today were able to build our map successfully and were able to navigate on it using Autonomous navigation but we are afraid to turn off our laptops O.o we are afraid that the map disappear by shutting down the operating system (because it happens every time :( )so is there any way to save the map permanently. please need help :(

i'll thx ^_^

@dornhege Thank you very much sir... i will read and try understand these two parts and i'll try to check for our odometry and range sensors according to these techniques on the lab tomorrow and i'll put the feedback on comment ...thanks again..can i tag you sir after putting the feedback ?

i am counting on the irobot create base odometry ... i don't have any external device

@dornhege i am using kinect sensor with irobot create base with gmapping .. without gyro sensor...and tracking the building of the map through rviz

hi everyone.. we've bought irobot create base with a kinect sensor and we don't have a gyro sensor.

 we were trying to build our map using gmapping but among the past month we didn't get an accurate map and we couldn't navigate because every time we try to navigate the robot turn around itself without moving toward the target

why we couldn't get accurate map ? we are thinking because we don't have gyro sensor we think that the robot can't recognize the directions or something like that because while our process to build the map the robot can recognize moving (forward/backward) but can't recognize (left/right) directions so we need to know

First: is the problem because of we don't have gyro sensor which we need to buy ?

Second: is it normal that the robot can't recognize its (left/right) directions on the rviz ?
we will be very grateful because we get disappointed and hopeless :/?
thanks very much ^_^

i had some issues in my os so i had to uninstall it and reinstall ubuntu 12.04 and fuerte again but when i was trying to install roboearth stack from this tutorial RoboEarth Stack

i got this :-

wafaay@wafaay:~$ rosinstall ~/ros /opt/ros/fuerte 'http://www.ros.org/wiki/roboearth?action=AttachFile&do=get&target=roboearth.rosinstall'

> ERROR in config: Is not a local file,
> nor able to download as a URL

[http://www.ros.org/wiki/roboearth?action=AttachFile&do=get&target=roboearth.rosinstall]: 

urlopen error [Errno 110] Connection timed out

what that error suppose to mean ?.. is this link out of date or something ?

i have edited the question and added a video from my workstation ... if you have any comments sir ..thank you ^_^

i have edited the question and added a video from my workstation ... if you have any comments sir ..thank you ^_^

i have edited the question and added a video from my workstation ... if you have any comments sir ..thank you ^_^

I was trying to build my environment map using SLAM from this Building a map with SLAMturtorial using my icreate base + kinect and yesterday at after many trials i got this picture and got (my_map.pgm & my_map.yaml) :-

and when i closed and tried to build another one from the beginning i didn't get any map i've tried many times but without any new results i always get this empty view on rviz :-

without building my map on rviz ..so is there any tips about what may went wrong with me ?...thanks in advance

i have added a video of my work :-

this video is from my workstation :- Workstation Rviz interface

thank you very much ..i'll try it and write down the feedback here to help the others with the same problem

no i didn't use ointcloud_to_laserscan package at the first picture or second picture ... so can you give me any tip about how to use this package ?

no it is not a white patch it is just the axes and the corresponding tf nodes ... and i moved my base many times forward and backward....but i got not map :(