发布者: #!/usr/bin/env python #coding=utf- import rospy from std_msgs.msg import String def talker():     pub = rospy.Publisher()     rospy.init_node('talker',anonymous=True)     rate = rospy.Rate() # 10hz     while not rospy.is_shutdown():         hell…

Combine Subscriber and Publisher in Python, ROS This article will describe an example of Combining Subscriber and Publisher in Python in ROS programming. This is very useful in ROS development. We will also discuss briefly how to build and modify a c…

/************************************************************************************** * RPi 2B python opencv camera demo example * 声明: * 本文主要记录RPi 2B 使用python opencv来获取图片的方式. * * 2016-2-24 深圳 南山平山村 曾剑锋 **********************************************…

1.首先创建 package cd ~/catkin_ws/src catkin_create_pkg topic_demo roscpp rospy std_msgs 2. 编写 msg 文件 cd topic_demo mkdir msg cd msg vim gps.msg 将以下代码写入: float32 x float32 y string state   x 是横坐标,y 是纵坐标,state 是状态 还记得以前说的吗:点击打开链接 修改 package.xml 文件: <build…

#!/usr/bin/env python #coding=utf- import rospy from std_msgs.msg import String i= def talker(): global i pub = rospy.Publisher() rospy.init_node('talker',anonymous=True) #rate = rospy.Rate() # 10hz #rospy.signal_shutdown("closed!") while not ro…

#!/usr/bin/env python #coding=utf- import rospy from std_msgs.msg import String def talker(): pub = rospy.Publisher() rospy.init_node('talker',anonymous=True) #rate = rospy.Rate() # 10hz while not rospy.is_shutdown(): rospy.loginfo("pub") pub.pu…

java demo https://github.com/hankcs/HanLP/tree/master/src/test/java/com/hankcs/demo github python demo https://github.com/hankcs/pyhanlp/tree/master/tests/demos. http://hanlp.linrunsoft.com/ https://www.zhihu.com/question/19578687 https://minitools.r…

建立文件夹hello_rospy,再在该目录下建立子目录src,cd到该src目录,运行如下命令创建工作包 catkin_create_pkg beginner_tutorials std_msgs rospy roscpp pkg代表所属包名,name是文件名,type是脚本文件名称,output指定输出到屏幕 <node pkg="xsens_drive" name="mtnode" type="mtnode.py" output=&q…

#!/usr/bin/env python import rospy import tf from tf.transformations import * from std_msgs.msg import String from geometry_msgs.msg import Pose from geometry_msgs.msg import Quaternion def get_pos(data): (roll, pitch, yaw) = euler_from_quaternion([d…

修改 topic 的分区数 shiyanlou:bin/ $ ./kafka-topics.sh --zookeeper localhost:2181 --alter --topic mySendTopic --partitions 4WARNING: If partitions are increased for a topic that has a key, the partition logic or ordering of the messages will be affectedAdd…