I have been using the routing tools inside Google OR-Tools for quite a while now, and I must say that it behaves incredibly well in most cases I tested. The procedures there are not the best you will find in the Operations Research world (neither in time nor in objective function results), but they are […]
It was around the time I separated the Python package from the QGIS plugin and started making AequilibraE a more serious software effort with unit tests, continuous integration, and documentation that I decided that I would eventually have to develop a more consistent API for AequilibraE. That evolution, allied TranspoNET (HOW THE HELL HAVE I FAILED […]
It has been a really long time since I released the experimental version of AequilibraE for QGIS 3.X, and since then I haven’t worked really hard on it. Part of this slow down in the development had to do with the fact that I don’t have air condition in my home office, and Brisbane’s summer […]
One of my last blog posts (adding Python packages to QGIS 3 on Windows 10) was pretty simple, but I was pretty sure that something like that would help quite a bit of people that want to integrate more Python packages into their QGIS workflow, particularly for heavier data processing. One of the many packages […]
Let me start by saying that AequilibraE is probably my favorite project, but I have been neglecting it for a while. Just for some perspective, QGIS 3 has had three major releases (3.0, 3.2 & 3.4) and I have not yet released a version of AequilibraE that is compatible with this new platform. That is […]
It has been nearly 4.5 years since I published my idea on making desire lines using Delaunay Triangles on this blog, over 3.5 years I launched AequilibraE and about 2 years since I incorporated Delaunay Lines into AequilibraE (and made it actually usable). I have presented this concept in conferences (ATRF, TRB Modeling Aplications, and […]
The topic of this post is something I have been wanting to do since I published version 0.3 of AequilibraE, back on August 2016: Separating the aequilibrae python library (the computational engine that underlines most of the AequilibraE procedures) from the GUI part of the software (which is the QGIS interface). The goal? Being able […]
Taking the new version of AequilibraE for a ride, my first application used a data source that is very familiar to me, the Freight Analysis Framework. It is a rich data source, yet fairly small due to its large zones, thus making for pretty quick tests (even on my 9yo laptop). The first task was […]
Like most minimally experienced transportation modellers and planners, I have used multiple modelling software in professional and academic life, but I could not properly appreciate the differences between some of the different software implementations until I became myself a “developer” with AequilibraE. One of these differences is how to define and number centroids and general […]
Just as I wrote in my last post, I continue to work on a major new release for AequilibraE, which will bring brand new matrix and tabular data formats, multi-class assignment (for traffic and Delaunay Lines). While chipping away on that task, I have been busy fixing bugs reported on Github (6 in the last […]