Varun Agrawal varunagrawal

Log into your server with ssh or TeamViewer.

If it's a new server, install Python (using pyenv) and jupyter.

pip install jupyter -y

To use jupyter, we need to modify a few settings and create a password:

Building GTSAM with custom path

CMake

To allow CMake to find the custom path, we need to set the CMAKE_PREFIX_PATH environment variable.

Insert the following line in your .bashrc file (usually located at ~/.bashrc) or the RC file for whatever shell you're using (in my case ~/.zshrc).

export CMAKE_PREFIX_PATH=~/borglab/libs:$CMAKE_PREFIX_PATH

Git Subtree Basics

If you hate git submodule, then you may want to give git subtree a try.

Background

When you want to use a subtree, you add the subtree to an existing repository where the subtree is a reference to another repository url and branch/tag. This add command adds all the code and files into the main repository locally; it's not just a reference to a remote repo.

When you stage and commit files for the main repo, it will add all of the remote files in the same operation. The subtree checkout will pull all the files in one pass, so there is no need to try and connect to another repo to get the portion of subtree files, because they were already included in the main repo.

Adding a subtree

Let's say you already have a git repository with at least one commit. You can add another repository into this respository like this:

Also works for OpenCV 4

Prerequisites

NOTE: We need to use cmake with HTTPS support to download the files when cmake runs. Any version of CMake >= 3.9 should do.

wget --no-check-certificate https://cmake.org/files/v3.9/cmake-3.9.0.tar.gz
tar -zxvf cmake-3.9.0.tar.gz
cd cmake-3.9.0

Arch Install Guide

Foundation

Partition a drive on Windows and delete it so that it's free space. Note the size since we'll need it later.
Boot into Arch
Run fdisk -l to see the partitions.

	2020-11-13 10:20:20 -0500

	make
	install

	/home/varun/.linuxbrew/Cellar/cmake/3.18.4/bin/cmake -S/tmp/ignition-math6-20201113-31262-1tcx3yt/ignition-math-6.6.0 -B/tmp/ignition-math6-20201113-31262-1tcx3yt/ignition-math-6.6.0 --check-build-system CMakeFiles/Makefile.cmake 0
	/home/varun/.linuxbrew/Cellar/cmake/3.18.4/bin/cmake -E cmake_progress_start /tmp/ignition-math6-20201113-31262-1tcx3yt/ignition-math-6.6.0/CMakeFiles /tmp/ignition-math6-20201113-31262-1tcx3yt/ignition-math-6.6.0//CMakeFiles/progress.marks
	/usr/bin/make -f CMakeFiles/Makefile2 all
	make[1]: Entering directory '/tmp/ignition-math6-20201113-31262-1tcx3yt/ignition-math-6.6.0'
	/usr/bin/make -f CMakeFiles/doc.dir/build.make CMakeFiles/doc.dir/depend

	import gc
	import numpy as np
	import sys
	import time
	import torch
	from torch.autograd import Variable
	import torchvision.models as models
	import torch.backends.cudnn as cudnn

	import numpy as np


	def average_precision(recall, precision):
	mrec = np.hstack((0, recall, 1))
	mpre = np.hstack((0, precision, 0))

	for i in range(mpre.size-2, -1, -1):
	mpre[i] = max(mpre[i], mpre[i+1])

	FROM osrf/ros:indigo-desktop-full

	ENV DEBIAN_FRONTEND noninteractive

	RUN apt-get update && \
	apt-get install -y aptitude

	RUN printf 'n\nY\nY\n' \| aptitude install ros-indigo-fetch-gazebo-demo

	SHELL ["/bin/bash", "-c"]

	SCRIPT_DIR=`dirname ${BASH_SOURCE[0]-$0}`
	SCRIPT_DIR=`cd $SCRIPT_DIR && pwd`