A brief update on this blog

A quick note ...

I recently started porting this blog from Wordpress to Pelican.

Bit by bit, the old articles and photo galleries are being updated and added again to the blog.

A quick and dirty path finding algorithm for .shp files

The 'Problem'

Let's assume, you have a set of paths (lines) in a .shp file and try to come up with a way to create one .shp file for every possible combination of paths between a point A and a point B ... Trying to brute force this can be quite …

How to use LineCollections in Matplotlib

First, import the necessary modules:

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.collections import LineCollection

Then generate some data to plot:

x_array = np.linspace(0,2*np.pi,30)
y_arrays = [np.sin(x_array-i*0.2)+0.3*i for i in x_array]

Choose a colormap …

How to create full HD time lapses with Python, ImageMagick and libav

I found myself in need of a small piece of code to create a time lapse movie from a couple of pictures I took a while ago ...

As it turns out my favorite tool to do that (ffmpeg) got forked and is now available on Debian Jessie as part of …