renweiya的博客-优快云博客

翻译 2021-07-22

Inverse Wave EquationConsider the 1d wave equation:∂2u∂t2=c∂2u∂x2,\frac{\partial^2u}{\partial t^2}=c\frac{\partial^2u}{\partial x^2},∂t2∂2u=c∂x2∂2u,where c>0c>0c>0 is unknown and is to be estimated. A group of data pairs {xi,ti,ui}i=1,2,⋅,N

2024-02-26 10:34:42 62

原创【无标题】

bashrc配置

2022-06-23 11:23:32 172

原创无法远程链接ubuntu 18.04屏幕的问题-access control disabled,clients can connect from any host

sudo gedit /etc/profile.d/xrk.sh加入#!/bin/bashxhost +退出后sudo chmod 777 /etc/profile.d/xrk.sh最后source /etc/profile即可会显示access control disabled,clients can connect from any host

2020-06-11 11:31:39 2164 1

原创 ubuntu16.04 18.04/linux 安装Carla-0.9.9和Unreal Engine(UE) 4.24的一些坑（titan v）

要素Carla，https://github.com/carla-simulator/carla; Unreal Engine 和 VulkanUE4.24依赖Vulkan，Vulkan依赖Opengl，Opengl驱动可能会导致循环登陆。1.系统本是ubuntu16.04,但是本机绕不过安装opengl驱动循环登陆的坑，只得升级到18.04，在update的图形界面自动upgrade即可（不知为啥命令行不好使）2.显卡为4×titan v，驱动至少大于440.66(配合vulkan1.2)，本机安

2020-06-04 10:35:52 3290 2

原创 nvidia显卡驱动写入内核

sudo apt-get install dkmscd /usr/srcls440.31:版本号sudo dkms install -m nvidia -v 440.31

2020-05-22 16:55:56 511

原创 ImportError: cannot import name 'reraise' from 'gym.utils' or ImportError: cannot import name 'prng'

pip install gym==0.10.5

2020-05-06 11:41:20 4553 2

原创 import tensorflow问题，ImportError: cannot import name 'mock'

Tensorflow使用mock需要absl，因此，pip install -U absl-py==0.7.0

2020-04-09 13:08:13 1476

原创 ubuntu16.04安装mpi4py error

先执行sudo apt install libopenmpi-dev然后pip install mpi4py

2020-04-07 23:41:04 1470

原创一步配置Cuda

https://developer.nvidia.com/cuda-downloads?target_os=Linux&target_arch=x86_64&target_distro=Ubuntu&target_version=1604&target_type=runfilelocalwget https://developer.download.nvidia....

2020-03-10 20:18:26 253

原创 ## rosdep init/rosdep update 错误（ERROR: cannot download default sources list from）

rosdep init/rosdep update 错误（ERROR: cannot download default sources list from）————————————————按照 ros/installation在ubuntu 16.04上安装ros kinetic，在执行以下命令时：$ sudo rosdep init出现以下错误：// ERROR: cannot d...

2020-02-11 11:05:54 938 1

原创 ubuntu16.04 循环登录无法进入

ctr+alt+F1sudo apt-get remove nvidia-*sudo apt-get autoremovesudo nvidia-uninstallreboot

2019-12-12 21:44:24 190

原创 Ubuntu16.04-fatal error: websocketpp/*.hpp: No such file or directory

sudo apt-get updatesudo apt-get install libwebsocketpp-dev

2019-12-11 21:01:47 1150 1

原创 (Dell)win10安装ubuntu双系统

https://askubuntu.com/questions/1151197/dual-boot-ubuntu-16-04-with-preinstalled-windows-10-dell-g5-5587/1151419#1151419https://askubuntu.com/questions/1151197/dual-boot-ubuntu-16-04-with-preinstalled...

2019-12-10 22:31:04 270 3

原创关于ubuntu 16.04关闭anaconda某环境后自动进入base虚拟环境或保持环境

修改～/.bashrc以下语句（sudo vim ~/.bashrc）：__conda_setup="$(CONDA_REPORT_ERRORS=false ‘/home/la/anaconda3/bin/conda’ shell.bash hook 2> /dev/null)"if [ KaTeX parse error: Undefined control sequence: \ev...

2019-11-28 21:02:50 858

原创 ubuntu 16.04切换自带python

sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.5 2update-alternatives --list python

2019-11-28 20:09:49 228

原创经纬度转平面x-o-y北东地坐标系，x-o-y北东地平面坐标系转经纬度

#define EARTH_RADIUS 6378137.0f //6378145.0f//设定init_lat_，init_lon_为平面坐标系原（0，0）点的经纬度//pn（北）转纬度float pn2latitude(float pn, float init_lat_){return (pn * 180) / (EARTH_RADIUS * M_PI) + init_lat_;...

2019-10-16 16:57:32 2304

原创 Gazebo+ROS中添加多个圆柱体的方法

把每个圆柱体当作一个物理模型，通过launch启动1.写一个hill.xacro文件<?xml version="1.0"?><robot name="hill" xmlns:xacro="http://ros.org/wiki/xacro"> <xacro:property name="namespace" value="$(arg hill_name)"...

2019-05-07 10:52:40 1595

原创 error: ‘CV_RGB’ was not declared in this scope

当前版本，opencv3.4.2catkn_make编译报错: ‘CV_RGB’ was not declared in this scope解决方案，对应.h文件添加头文件：#include <opencv2/imgproc.hpp>

2018-11-29 13:36:33 9345 1

原创 Gazebo7.0.0升级到Gazebo7.1.3

gazebo加载小车suv模型suv.mtl,suv.obj问题，需要升级gazebo7.01.t添加源，系统设置-&amp;amp;gt;system settting-&amp;amp;gt;software update-&amp;amp;gt;other software-&amp;amp;gt;add deb’Hit:5 http://packages.osrfoundation.org/gazebo/ubuntu-stable

2018-11-27 16:34:06 5122

原创 You are using pip version 8.1.1, however version 18.1 is available. (python2.7)

Install:sudo apt install python-pipProblem:You are using pip version 8.1.1, however version 18.1 is available.You should consider upgrading via the ‘pip install --upgrade pip’ command.Solve:pyth...

2018-10-25 10:22:42 2983

原创 Ubuntu16.04安装RealsenseD435驱动及work

Ubuntu16.04安装RealsenseD435驱动及work下载source code cmake 仍然回传不了图像？firmware版本的问题 sudo apt-get install dfu问题？下载source codeIntelRealSense官网下载（官网-靠谱），ubuntu下载source code：https://github.com/Int...

2018-10-22 11:46:57 6713 4

matlab解决tsp问题-速度很快-50city-5s以内最优解

非常有效快速地算法-注释非常清楚-改进遗传算法，主要改进变异模块，采用多种变异混合进行，改进交叉模块，解决tsp问题-速度很快-50city-5s以内最优解，取消对画图功能的注释，可以每次都画出当前tsp图，但画图会减慢计算速度。解决不同城市规模的参数设置不同，存在最优参数组合。gamain.m是主程序。

2012-09-05