Python for Geosciences
This is a short overview of how Python is used in science and particularly in geosciences. The idea is to show how to setup Python for purposes of scientific computation and visualization, cover some basic features of the language and show some of the real world applications such as:
- Array manipulations.
- I/O (binary, txt, netCDF, mat).
- Creation of maps and graphics.
- Time series analysis.
This overview is aimed at the scientists who are interested in Python but don't know how to start using it (this might be really confusing for a newcomer), or would like to learn more about possible Python applications. For those of you who already use Python there will be nothing really new.
This notes will be helpful only if you know some programming language already (preferably Matlab). Notes are also avalible as webpages at earthpy.org.
PRs with corrections are very welcomed.
Getting started for Linux/Mac
Change mode of the downloaded scrip to executable, e.g.:
chmod +x Miniconda3-latest-MacOSX-x86_64.sh
Run installation process:
At the end the script will offer you to add Miniconda3 install location to the PATH in your
.bashrc/.bash_profile. You should say 'yes'. Please double check that you have something like this in your
# added by Miniconda3 4.3.21 installer export PATH="/Users/koldunovn/miniconda3/bin:$PATH"
If you for whatever strange reason use csh/tcsh, then add to your
setenv PATH /Users/koldunovn/miniconda3/bin:$PATH
Now you can open a new terminal window (sourcing not always works) and try to type:
if as a result you see conda help, then everything is set up properly. The last thing before installing packages is to add
conda config --add channels conda-forge
Now you can install nessesary packages:
conda install ipython jupyter matplotlib scipy pandas basemap netcdf4
To begin working with notebooks execute:
the browser should pop up with jupyter main page. You can navigate to the folder with notebooks from there and open them.
Getting started for Windows
First you have to download and install Anaconda python distribution for your system from here. If installation is sucessful, you will be able to work with notebooks from 02 to 07. In order to work with
Basemapsome additional steps are required.
Go to start menu, choose
cmdin order to bring up windows command line.
Anaconda\Scriptsdirectory by executing
conda install netcdf4 basemapand agree with installation
Links to nbviewer versions