sytrus-in-github

Ubuntu 16.04 on Dell inspiron 15 7000 gaming

Ubuntu installation

1. download Ubuntu system .iso file.
2. prepare a usb key (better usb3 for speed, will be formatted but the storage space can be easily recovered)
3. use rufus to unpack the iso file to the usb key
4. branch the usb key to the computer
5. restart, then press F12,
6. turn off the secure boot option

sytrus-in-github

get package without installing with sudo

1. get .deb package. (using e.g. apt-get download (package_name))
2. unpack package with ar x *.deb
3. unpack binary with tar xvzf data.tar.gz
4. run usr/bin/(binary_name) and hope everything works :)

Summarized based on this answer in askubuntu

sytrus-in-github

# get number of tests and iterate through each tests
##  Python 3
t = int(input().strip())
for _ in range(t):
    
##  Python 2
t = int(input().strip())
for _ in range(t):
    

sytrus-in-github

# tested with python 2 + matplotlib 2.0.0
from mpl_toolkits.mplot3d import axes3d
import matplotlib.pyplot as plt
import numpy as np


def getMaxXYZ(vec3ds):
    mx, my, mz = vec3ds[0]
    for (x, y, z) in vec3ds:
        mx, my, mz = (max(x, mx), max(y, my), max(z, mz))

sytrus-in-github

ROS tutorial summary

1 ROS environment management

1.1 check ROS environment

printenv | grep ROS

1.2 setup ROS environment (can be added to ~/.bash_profile for autosetup on each login)

source /opt/ros/<distro>/setup.bash (for Bash, don't use sth else like setup.sh!)

2 ROS (catkin) workspace management

2.1 create ROS (catkin) workspace

mkdir <path_to>/<workspace_name>/src

sytrus-in-github

function gsync() {
	echo "*** Synchronizing current repo ***"
	echo
	echo "=== adding all ..."
	git add .
	echo
	echo "=== committing all ..."
	git commit -a -m "$1"
	echo
	echo "=== pulling ..."

sytrus-in-github

import json


def json2js(jsonfilepath, functionname='getData'):
    """function converting json file to javascript file: json_data -> json_data.js

    :param jsonfilepath: path to json file
    :param functionname: name of javascript function which will return the data

    :return None