Author Archives: François Goulet

Useful Tip: Copy-Paste Geometry from QGIS to PostGIS

Did you know (I just found out) that when you copy some rows from your attribute table in QGIS and paste that into a Query window in PostgreSQL, the geometry of your object is passed as WKT geometry? Try this: … Continue reading

Posted in GIS, PostGIS | Tagged , , | 8 Comments

How to add custom tiles as a QGIS background

This post was made using QGIS 1.8 (or so…). It will not work on 2.4. Yesterday, Nicholas Duggan (@Dragons8mycat) tweeted about a project he did with his kids over the week-end. He created a “Treasure Map” with them in QGIS … Continue reading

Posted in Uncategorized | 10 Comments

Newest map (with texture shading!)

I just received some pictures about my latest “creation”. I created a relief map of Haiti for the Canadian Museum of Civilization exhibit “VODOU“. The map is displayed in the entrance corridor as an introduction to the exhibit. The particularity … Continue reading

Posted in Cartography | Leave a comment

The Trivariate Flow Map Problem.

Yesterday I asked on Twitter how to solve a problem using trivariate flow maps. Of course, explaining it all with 140 characters was quite impossible. Here’s the problem (due to confidentiality, the values aren’t the true ones, but you’ll get … Continue reading

Posted in Cartography | 4 Comments

La boîte à outil du cartographe / Cartographer’s Toolkit

J’étais excité hier comme un écolier qui apprend qu’une tempête de neige s’annonce et qui réalise que l’école va probablement être fermée le lendemain! 😉 J’ai reçu ma copie de «Cartographer’s Toolkit» par Gretchen Peterson de PetersonGIS. Dans ce livre, … Continue reading

Posted in Cartography, GIS | Leave a comment

My First Python Script!

Wooohoooo! Ok, it took a incredible ridiculous amount of time to create it, but I finally did it! CREATE NETWORK FLOW ARCS The script is quite simple. It takes a shapefile with an ID, and origins and destinations coordinates in … Continue reading

Posted in GIS, Python, Script | Tagged , , | 3 Comments