Difficulty level 3 of 5: Intermediate
pyproj is a Python interface to the PROJ.4 () functions. It allows you to transform coordinates between coordinate systems. Install pyproj using pip Assuming you’re using pip to install Python packages: $ pip install pyproj
I tried the Tor browser today, and was amazed at how slow it was. As Tor’s user base has grown, the performance of the Tor network has suffered. This document describes the current understanding of why Tor is slow, and…
In this post I’ll compare the running time of reading uncompressed and compressed files from disc. I’ll run a test using two files, data.txt (858M) and data.txt.gz (83M), that have the same content. About cat and zcat The well-known command…
Online documentation for GDAL/OGR Python is sparse. Here I show some recommended ways of learning more about GDAL/OGR in Python. Using Python interpreter You can learn about GDAL and OGR from inside the Python interpreter. Start python interpreter: $ python…
GDAL is not very well documented, and a complete Python API documentation site is not something I’ve found. So here are the best tutorials I’ve found so far for GDAL + Python. GDAL Python samples on osgeo.org
Note: The word “easy” is relative to the other solutions I found for doing 3D graphics in LaTeX. The following template is adapted from the annotated 3d box example. % Template for drawing with tikz 3D package \documentclass[]{article} \usepackage{tikz} \usetikzlibrary{3d}…
tikZ and LaTeX PGF/TikZ is a tandem of languages for producing vector graphics from a geometric/algebraic description. You can use this language inside tex files, to programmatically draw nice 2D and 3D graphics. Another package which some people prefer for…
Download sourcecode Choose the appropriate sourcecode version by going to wget # or use curl
Nagios looks at 1) return codes and 2) output to stdout. This is the hello world of Nagios plugins, written in Python: check_helloworld.py: #!/usr/bin/env python # optparse is Python 2.3 – 2.6, deprecated in 2.7 # For 2.7+ use …
This howto shows how to get Nagios up and running on an Amazon EC2 Instance using Apache web server to serve the Nagios UI. You could argue that a more light-weight web server would be better, but I’d argue that…