17 May 2017
I recently discovered Selenium, a very useful tool to automate browsers navigation. Selenium allows to write scripts to automatically perform actions on a web browser: visit a page, click on a link, fill in a form… and retrieve the results of these actions. In this post, I am going to show you how to use Selenium from Python to automatically send messages to a list of Flickr contact through a contact form from your Flickr account.
27 Jun 2016
Lately, I have been facing several times the same problem while trying to spatially aggregate milion of spatial points over a spatial distribution of thousands of (not overlapping) polygons: How to efficiently identify the polygon in which every point is located? Indeed, as the number of elements increases R starts to become less and less efficient. In this post, I am going to show you how to efficiently perform operations between geometries by interfacing with PostGIS from R.
15 Feb 2016
In this post I’m going to show you how to display temporal trajectories on Google Earth using the python package
simplekml. This package enables us to generate KML videos that we can then plot
and record on Google Earth. The python script kmlMovie.py described in this post is available on my
04 Nov 2015
In this post we are going to learn how to plot 3D barplots on a map using R. It is actually not as complicated as it looks. As we will see below,
we only need to draw a perspective map using the function persp and then plot the barplots on it.
23 Oct 2015
In this post post, I’m going to show you how to do nice bubble charts with R. The data are available here.