QGIS 3.0 is out and from the blogs and tweets, it looks awesome. Some one asked me how to install QGIS 3.0 on Ubuntu 16.04, so here are the steps.
First, if you have previous version of qGIS, lets delete that
sudo apt-get autoremove qgis sudo apt-get --purge remove qgis python-qgis qgis-plugin-grass sudo apt-get autoremove
Now edit /etc/apt/sources.list by using the following command
sudo vi /etc/apt/sources.list
Note: Sudo is required because normal users do not have rights in /etc/apt/ folder.
Now this is where is trick is, instead of adding debian or ubunutgis repositories add ubunutgis-nightly-release, so add the following two lines in source. list
deb https://qgis.org/ubuntugis-nightly-release xenial main deb-src https://qgis.org/ubuntugis-nightly-release xenial main
Rest is simple, first update
sudo apt-get update
and then install
sudo apt-get install qgis python-qgis qgis-plugin-grass saga
Some of the dependencies will not be there if we use ubuntugis-nightly-release repository reference.
In the last few years, I have tired many text editors like gedit, sublime, vi, vim and now Atom. You can read more about Atom on their website.
What I like about Atom is the packages, gedit and sublime also has packages (reference) for example I like cli panel in text editors, like Embedded Terminal in gedit
However, I needed a text editor that can support a cli and a webbrowser plugin (see the image below). Atom does that as it has a terminal-plus (don’t install it before you read the complete blog) and browser-plus.
Use the following commands on Ubunut to install Atom
sudo add-apt-repository ppa:webupd8team/atom
sudo apt update sudo apt install atom
Some of the packages I like are (you can install them using atom builtin package manager or command line utility apm)
autocomplete-python 1.10.2 autocomplete-python-jedi atom-bootstrap4 ver 1.4.0
some other good autocomplete packages are
autocomplete-json atom-django 0.3.2 django-templates
and some other packages
browser-plus 0.0.98 (open browser by using ctrl-alt-o) emmet 2.4.3 linter-flake8 2.2.1 terminal-plus 0.14.5 (I had problems installing this one) platformio-ide-terminal
Some installed packages could not be loaded because they contain native modules that were compiled for an earlier version of Atom like with terminal-plus package
Solution to terminal-plus package issue
The solution worked on my unbunut 14 laptop, but I could not make it work on ubunut 16. I did some searching and then opted for “platformio-ide-terminal” as some one said it is not in development any more (the repo is at least one old https://github.com/jeremyramin/terminal-plus). The package “platformio-ide-terminal” works out of the box.
Note: For color change (in package setting), restart Atom after colors are changed.
if you want to remove atom, use the following command.
sudo apt remove --purge atom
What do you think, you want to give it a try.
If you get an error like
Err:1 http://ppa.launchpad.net/webupd8team/atom/ubuntu xenial/main amd64 atom amd64 1.24.1-1~webupd8~0 Hash Sum mismatch
Do the following (reference)
sudo rm -rf /var/lib/apt/lists/* sudo apt clean sudo apt update
Source: Creating web maps using leaflets
Nice one, simple explanation
Having been in the social sciences for a couple of weeks it seems like a large amount of quantitative analysis relies on Principal Component Analysis (PCA). This is usually referred to in tandem with eigenvalues, eigenvectors and lots of numbers. So what’s going on? Is this just mathematical jargon to get the non-maths scholars to stop asking questions? Maybe, but it’s also a useful tool to use when you have to look at data. This post will give a very broad overview of PCA, describing eigenvectors and eigenvalues (which you need to know about to understand it) and showing how you can reduce the dimensions of data using PCA. As I said it’s a neat tool to use in information theory, and even though the maths is a bit complicated, you only need to get a broad idea of what’s going on to be able to use it effectively.
View original post 1,535 more words
Each time I install R, I have to read documentation. This time I decided to write my own small version of installation documentation. So here we go 🙂
Step 1 : Update your package repository so that you can get R 3.x
Use nano to open source.list (command below)
sudo nano /etc/apt/sources.list
Now update sources.list with the folling line (just insert at the bottom of file).
deb http://cran.rstudio.com/bin/linux/ubuntu precise/
and Ctrl X will take you out of nano, it will ask to save file say ‘Y’.
Add key to authenticate CRAN packages
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
otherwise you will get an error similar to this
W: GPG error: http://cran.rstudio.com precise/ Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY .................
Step 2: Now update packages by using the following command
sudo apt-get update
if you get message like
Reading package lists... Done
it means you are ready to go with installation. Run the command below
sudo apt-get install r-base
Now confirm by running R to see if it is working fine.
To install rgdal package, have a look at “Installing rgdal package for R3“.
To install R 3.2.0 on Ubuntu 140.4, following the instruction below.