id stringlengths 15 54 | text stringlengths 3 133k | title stringclasses 1
value |
|---|---|---|
ros_instantiate/reading20msgs20from2_53.txt |
key: "Early diagnostic update count:"
value: "0"
-
key: "Zero seen diagnostic update count:"
value: "0"
# =======================================
# topic: /obs1/gps/fix
# msg_count: 30
# timestamp (sec): 1490150297.... | |
ros_instantiate/Commandline_106.txt | * ` --try-future-version `
* still try to open a bag file, even if the version number is not known to the player | |
ros_instantiate/Commandline_189.txt | Except where otherwise noted, the ROS wiki is licensed under the
[ Creative Commons Attribution 3.0
](http://creativecommons.org/licenses/by/3.0/) | |
ros_instantiate/pythonapirosbagwrite_49.txt | Its because I want to make a bridge beetween a rosbag file and a txt file, and
the only way I know to write in the bag file is to use the rosbag API for
python | |
ros_instantiate/pythonapirosbagwrite_56.txt | 2 followers | |
ros_instantiate/reading20msgs20from2_78.txt | END. | |
ros_instantiate/pythonapirosbagwrite_5.txt | The site is read-only. Please transition to use Robotics Stack Exchange | |
ros_instantiate/readmessageshtml_101.txt | [ ` select ` ](select.html) | [ ` rosbag ` ](rosbag.html) | [ ` timeseries `
](timeseries.html) | [ ` rosbagreader ` ](rosbagreader.html) | |
ros_instantiate/Commandline_156.txt | ` --output-dir=DIR ` | |
ros_instantiate/readmessageshtml_79.txt | [ collapse all ](javascript:void\(0\);) | |
ros_instantiate/Commandline_41.txt | ` -p ` , ` --publish ` New in ROS Melodic | |
ros_instantiate/Commandline_142.txt | ` --print=PRINT-EXPRESSION ` | |
ros_instantiate/readmessageshtml_80.txt | ### ` bag ` — Index of messages in rosbag
` BagSelection ` object | ` rosbagreader ` object | |
ros_instantiate/reading20msgs20from2_30.txt |
$ rostopic echo /obs1/gps/fix | tee topic1.yaml
WARNING: topic [/obs1/gps/fix] does not appear to be published yet | |
ros_instantiate/Commandline_138.txt | ` t ` | |
ros_instantiate/pythonapirosbagwrite_58.txt | ## Stats | |
ros_instantiate/readmessageshtml_78.txt | ## Input Arguments | |
ros_instantiate/readmessageshtml_11.txt | Search MathWorks.com | |
ros_instantiate/Commandline_47.txt | ` -d ` , ` --duration ` | |
ros_instantiate/readmessageshtml_92.txt | ### R2021a: ROS Message Structures | |
ros_instantiate/reading20msgs20from2_68.txt | Here is the command to run: | |
ros_instantiate/Commandline_5.txt | # Page | |
ros_instantiate/readmessageshtml_19.txt | * [ ROS Toolbox ](../index.html?s_tid=CRUX_lftnav)
* [ Bag File Logging and Analysis ](../ros-bag-file-analysis.html?s_tid=CRUX_lftnav)
* [ ROS Bag File Logging and Analysis ](../ros-bag-file-logging-and-analysis.html?s_tid=CRUX_lftnav) | |
ros_instantiate/Commandline_170.txt | ` --output-dir=DIR ` | |
ros_instantiate/readmessageshtml_41.txt | Using structures can be significantly faster than using message objects, and
custom message data can be read directly without loading message definitions
using [ ` rosgenmsg ` ](rosgenmsg.html) . | |
ros_instantiate/readmessageshtml_4.txt | [ 
](https://www.mathworks.com?s_tid=gn_logo) | |
ros_instantiate/Commandline_188.txt | Wiki: rosbag/Commandline (last edited 2021-08-25 19:45:58 by [ Gabriel
Staples ](/Gabriel%20Staples "Gabriel Staples @
75-18-248-60.lightspeed.snrmca.sbcglobal.net\[75.18.248.60\]") ) | |
ros_instantiate/Commandline_21.txt | * [ check ](/rosbag/Commandline#check)
* Determine whether a bag is playable in the current system, or if it can be migrated. | |
ros_instantiate/pythonapirosbagwrite_65.txt | [ AttributeError's when running Python scripts
](/question/363102/attributeerrors-when-running-python-scripts/) | |
ros_instantiate/pythonapirosbagwrite_31.txt | [ 
](/users/33908/tryan/) | |
ros_instantiate/Commandline_143.txt | * Evaluate and print a Python expression for verbose debugging. Uses same variables as filter expression.
$ rosbag filter --print="'%s @ %d.%d: %s' % (topic, t.secs, t.nsecs, m.data)" big.bag small.bag "topic == '/chatter'" | |
ros_instantiate/readmessageshtml_95.txt |
pub = rospublisher("/scan","sensor_msgs/LaserScan","DataFormat","struct")
msg = rosmessage(pub) | |
ros_instantiate/reading20msgs20from2_80.txt | Except where otherwise noted, the ROS wiki is licensed under the
[ Creative Commons Attribution 3.0
](http://creativecommons.org/licenses/by/3.0/) | |
ros_instantiate/Commandline_145.txt |
NO MATCH hello world 68
NO MATCH hello world 69
NO MATCH hello world 70
MATCH hello world 71
NO MATCH hello world 72
NO MATCH hello world 73 | |
ros_instantiate/Commandline_130.txt | ` -n ` , ` --noplugins ` | |
ros_instantiate/readmessageshtml_37.txt | [ example ](readmessages.html#buqn1u_-1) | |
ros_instantiate/reading20msgs20from2_59.txt |
sudo apt update && sudo apt install ripgrep | |
ros_instantiate/readmessageshtml_99.txt | For more information, see [ Improve Performance of ROS Using Message
Structures ](../ug/improve-performance-of-ros-using-message-structures.html) . | |
ros_instantiate/Commandline_92.txt | * ` -p PREFIX ` , ` --prefix=PREFIX `
* prefix all output topics | |
ros_instantiate/pythonapirosbagwrite_61.txt | Last updated: **Mar 17 '21** | |
ros_instantiate/Commandline_123.txt | * Do not load rule files via plugins.
$ rosbag check -n diag.bag | |
ros_instantiate/Commandline_71.txt | * Use the TCP_NODELAY transport hint when subscribing to topics | |
ros_instantiate/readmessageshtml_18.txt | * [ Robotics and Autonomous Systems ](../../overview/robotics-and-autonomous-systems.html?s_tid=hc_product_group_bc) | |
ros_instantiate/Commandline_80.txt | ` -y ` , ` --yaml ` | |
ros_instantiate/readmessageshtml_72.txt | Select a subset of the messages based on their timestamp and topic. | |
ros_instantiate/Commandline_191.txt | [  ](https://www.openrobotics.org/) | |
ros_instantiate/readmessageshtml_75.txt |
msgs = readMessages(bagMsgs2)
msgs= _99×1 cell array_
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
{1x1 Odometry}
... | |
ros_instantiate/Commandline_78.txt | ` -h ` , ` --help ` | |
ros_instantiate/Commandline_70.txt | ` -tcpnodelay ` | |
ros_instantiate/Commandline_86.txt | ## rosbag play | |
ros_instantiate/pythonapirosbagwrite_64.txt | [ Dataset that has camera,radar and imu ](/question/394720/dataset-that-has-
cameraradar-and-imu/) | |
ros_instantiate/classrosbag11Message_2.txt | ## Private Attributes
---
[ Bag ](classrosbag_1_1Bag.html) const * | [ bag_
](classrosbag_1_1MessageInstance.html#a48e1546589dadba572a63ca4aac4ee4f)
[ ConnectionInfo ](structrosbag_1_1ConnectionInfo.html) const * | [
connection_info_
](classrosbag_1_1MessageInstance.html#aea72c357275bd9b7c07595d0f1934719)... | |
ros_instantiate/readmessageshtml_43.txt | In a future release, ROS Toolbox will use message structures instead of
objects for ROS messages. | |
ros_instantiate/Commandline_26.txt | * [ reindex ](/rosbag/Commandline#reindex)
* Reindex one or more broken bag files. | |
ros_instantiate/pythonapirosbagwrite_16.txt | [ Asdewar ](/users/71807/asdewar/)
11 ● 2 ● 2 ● 3 | |
ros_instantiate/readmessageshtml_32.txt | ` msgs = readMessages(bag,rows) ` | |
ros_instantiate/pythonapirosbagwrite_3.txt | [  ](/questions/) | |
ros_instantiate/Commandline_9.txt | Contents | |
ros_instantiate/readmessageshtml_90.txt | **Introduced in R2019b** | |
ros_instantiate/readmessageshtml_29.txt | [ collapse all in page ](javascript:void\(0\);) | |
ros_instantiate/reading20msgs20from2_0.txt | [  ](/) | [ About
](http://www.ros.org/about-ros) | [ Support ](/Support) | [ Discussion Forum
](http://discourse.ros.org/) | [ Index ](http://index.ros.org/) | [ Service
Status ](http://status.ros.org/) | [ ros @ Robotics Stack Exchange
](https://robotics.stackexchange.com/questi... | |
ros_instantiate/pythonapirosbagwrite_44.txt | ## Comments | |
ros_instantiate/pythonapirosbagwrite_13.txt | * [ std_msgs ](/questions/scope:all/sort:activity-desc/tags:std_msgs/page:1/) | |
ros_instantiate/Commandline_18.txt | * [ record ](/rosbag/Commandline#record)
* Record a bag file with the contents of specified topics. | |
ros_instantiate/Commandline_12.txt | 1. [ ROS/Tutorials/reading msgs from a bag file ](/ROS/Tutorials/reading%20msgs%20from%20a%20bag%20file) \- learn how to use the ` ros_readbagfile ` command-line tool. General format: ` ros_readbagfile <mybagfile.bag> [topic1] [topic2] [topic3] [...] [topic1000] ` | |
ros_instantiate/Commandline_14.txt | The [ rosbag ](/rosbag) command-line tool provides functionality for ROS [
bags ](/Bags) . | |
ros_instantiate/pythonapirosbagwrite_59.txt | Asked: ** 2021-03-16 15:14:04 -0500 ** | |
ros_instantiate/reading20msgs20from2_45.txt | Note: if your terminal still says it cannot find the command when trying to
run it, you may need to ensure ` ~/bin ` is part of your ` PATH ` variable.
See [ my answer here for details
](https://answers.ros.org/question/371583/ros_readbagfile-command-not-
found/?answer=403354#post-id-403354) . | |
ros_instantiate/Commandline_67.txt | ` -j ` , ` --bz2 ` | |
ros_instantiate/readmessageshtml_108.txt | Choose a web site to get translated content where available and see local
events and offers. Based on your location, we recommend that you select: ****
. | |
ros_instantiate/Commandline_61.txt | * Advanced. Record to chunks of SIZE KB (Default: 768). This is a buffer within the bag file object. Lowering this value will result in more writes to disk. | |
ros_instantiate/reading20msgs20from2_32.txt | You'll see: | |
ros_instantiate/pythonapirosbagwrite_33.txt | [ **updated 2021-03-17 08:55:59 -0500 ** ](/answers/374173/revisions/) | |
ros_instantiate/Commandline_144.txt | _Example output:_ | |
ros_instantiate/readmessageshtml_39.txt | [ example ](readmessages.html#mw_b0d9f932-8f6a-4485-9695-b25bf8075b73) | |
ros_instantiate/Commandline_148.txt | ## rosbag compress | |
ros_instantiate/reading20msgs20from2_49.txt |
# (preferred, so you can easily see it is still running): write to the
# topics.yaml file AND print to stdout
time ros_readbagfile demo.bag /obs1/gps/fix /diagnostics_agg | tee topics.yaml | |
ros_instantiate/readmessageshtml_117.txt | * [ Belgium ](https://nl.mathworks.com) (English)
* [ Denmark ](https://se.mathworks.com) (English)
* [ Deutschland ](https://de.mathworks.com) (Deutsch)
* [ España ](https://es.mathworks.com) (Español)
* [ Finland ](https://se.mathworks.com) (English)
* [ France ](https://fr.mathworks.com) (Français) ... | |
ros_instantiate/readmessageshtml_107.txt | Select a Web Site | |
ros_instantiate/Commandline_58.txt | * Use an internal buffer of SIZE MB (Default: 256, 0 = infinite). This is the message queue of the recorder object, before messages are being passed on to the bag. Lowering this value might result in messages being dropped before they reach the recording process. | |
ros_instantiate/Commandline_154.txt | ` -h ` , ` --help ` | |
ros_instantiate/readmessageshtml_40.txt | ` ` msgs ` = readMessages( ___ ,"DataFormat",Format) ` returns data as a
cell array of structures or cell array of message objects using either set of
the previous input arguments. Specify ` Format ` as either ` "struct" ` or `
"object" ` . | |
ros_instantiate/pythonapirosbagwrite_8.txt | | [ Ask Your Question ](/questions/ask/)
---|---|---|---
0 | |
ros_instantiate/classrosbag11Message_3.txt | ## ◆ MessageInstance()
| rosbag::MessageInstance::MessageInstance | ( | [ ConnectionInfo
](structrosbag_1_1ConnectionInfo.html) const * | _connection_info_ ,
---|---|---|---
| | [ IndexEntry ](structrosbag_1_1IndexEntry.html) const & | _index_ ,
| | [ Bag ](classrosbag_1_1Bag.html) const & | _bag_ ... | |
ros_instantiate/readmessageshtml_84.txt | ## Output Arguments | |
ros_instantiate/readmessageshtml_36.txt | ` ` msgs ` = readMessages( ` bag ` ) ` returns data from all the messages in
the ` BagSelection ` or ` rosbagreader ` object ` bag ` . The messages are
returned in a cell array of messages. To get a ` BagSelection ` object, use [
` rosbag ` ](rosbag.html) . | |
ros_instantiate/readmessageshtml_31.txt | ` msgs = readMessages(bag) ` | |
ros_instantiate/readmessageshtml_2.txt | [ 
](https://www.mathworks.com?s_tid=gn_logo) | |
ros_instantiate/Commandline_60.txt | ` --chunksize=SIZE ` | |
ros_instantiate/pythonapirosbagwrite_52.txt | [ 
](/users/33908/tryan/) [ tryan ](/users/33908/tryan/) ( 2021-03-29 09:47:32
-0500 ) edit | |
ros_instantiate/Commandline_10.txt | 1. See Also:
2. rosbag command-line tool:
1. rosbag record
2. rosbag info
3. rosbag play
4. rosbag check
5. rosbag fix
6. rosbag filter
7. rosbag compress
8. rosbag decompress
9. rosbag reindex | |
ros_instantiate/reading20msgs20from2_56.txt | ## More .yaml file analysis | |
ros_instantiate/pythonapirosbagwrite_54.txt | ## Question Tools | |
ros_instantiate/Commandline_81.txt | * Print information in [ YAML ](http://www.yaml.org) format.
$ rosbag info -y /path/to/my.bag | |
ros_instantiate/reading20msgs20from2_65.txt |
$ time rg 'key: "piksi_' topics.yaml | sort -V | awk '!seen[$0]++'
key: "piksi_llh_diag: Frequency Status"
key: "piksi_rtk_diag: Frequency Status"
key: "piksi_rtk_diag: Piksi Status"
key: "piksi_time_diag: Frequency Status"
real 0m0.009s
user... | |
ros_instantiate/Commandline_23.txt | * [ filter ](/rosbag/Commandline#filter)
* Convert a bag file using Python expressions. | |
ros_instantiate/pythonapirosbagwrite_17.txt | Hi everyone,using the Python API I would like to write a message in a rosbag
file. | |
ros_instantiate/readmessageshtml_105.txt | Close | |
ros_instantiate/classrosbag11Message_6.txt | Definition at line [ 132 ](message__instance_8h_source.html#l00132) of file [
message_instance.h ](message__instance_8h_source.html) .
* * *
The documentation for this class was generated from the following files:
* [ message_instance.h ](message__instance_8h_source.html)
* [ message_instance.cpp ](message__instanc... | |
ros_instantiate/reading20msgs20from2_77.txt | 2. Because ` rostopic ` can only read **1 single topic at a time** , whereas ` ros_readbagfile ` can read **any number of topics at once!**
ros_readbagfile <mybagfile.bag> [topic1] [topic2] [topic3] [...] [topic1000] |
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