Author: Nicolas Karasiak

Dzetsaka, classification plugin, is now available on Qgis 3

Thanks to the amazing work of Qgis 3 contributors, Qgis 3 is now here and it’s awesome ! I manage to have a few days free to migrate dzetsaka to python 3 and to PyQt5, so dzetsaka is now available on the plugin repository.

4 March 2018 0

Chapter in QGIS and Applications in Agriculture and Forest book

I’m glad to share with you my first publication of a chapter with Pauline Perbet. According to Nicolas Bagdhadi who edited with Clément Mallet and Mehrez Zribi theses new series of books  “QGIS in remote sensing”, these 4 volumes “aim to facilitate the appropriation and operational use of the Quantum Geographic Information System (QGIS) software…
Read more

24 January 2018 0

Convert TMS tiles to XYZ for D3js

When I was working with D3js, I was searching on how to use TMS tiles made in Qgis with If you want to generate XYZ tiles, you can use the fork of made by Cayle Sharrock Default XYZ system is d[2] (zoom level), then d[0] (column), then d[1] (line), which gives :

30 November 2017 0

Historical Map Process into dzetsaka (Qgis)

Historical Map was my first plugin (thanks to Mathieu Fauvel). This plugin, which is almost deprecated now, allows the user to map forests from french general staff maps. But, as this plugin is very specific, I needed to develop a global tool for classification, which can handle simple classification, and post-treatment (like the Historical Map…
Read more

12 November 2017 0

HTML and CSS lego icons have a new friend : Javascript !

I was building my new courses in web development for Master SIGMA when I found some really nice illustrations explaining the role of HTML and CSS. But something was missing : Javascript ! I don’t manage to find the original author of these lego icons, but if you do, please comment. Now, here’s the javascript animated lego…
Read more

13 October 2017 0

Compiling OTB SuperBuild with Monteverdi and Remote Modules (Ubuntu 16.04)

Orfeo ToolBox (OTB) is an amazing tool for remote sensing. Some modules are not included in the distribution because they are produced by external users, but some of them are really interesting.

23 November 2016 0

Get ROI values from raster and combine all CSV (remote sensing statistics with R)

EDIT in 2018 : More than two years later after this post, I just discover it back and realize how crazy I was to use R for Remote Sensing and for extracting ROI. I really suggest you to use Python or Orfeo Tool Box (Sample Extraction) to do this thing, and really not R !…
Read more

21 May 2016 0

dzetsaka : how to make your first classification in Qgis ?

I just published the plugin dzetsaka : classification tool (github/qgis) on Qgis plugin server. This is a very simple plugin to make a fast but powerful classification. I used it for making numerous classifications of SPOT 5 scenes in the French Guiana Amazon forest. A project with samples (an old map (map.tif) and ROI (train.shp)) is available…
Read more

18 May 2016 1

How to get rid of “unknown enum QgsMapLayerProxyModel::PluginLayer” in Qgis ?

I was developping a plugin in Qgis with the Combobox layer (QgsMapLayerComboBox) which allows you to show all opened layer in Qgis. It’s a great tool that allows the user to select a raster or a vector easily. On Ubuntu everything works perfectly, but when I was trying on Windows I always had this error when loading the…
Read more

15 February 2016 0

Making a modern map with an old style

A project with my teacher Laurent Jégou was to design a recent map with an old map style. Some students chose to make the opposite, making an old map looks like a recent one (for example Rome in 300 A.D with an Open Street Map style). I took the first project and I worked to make an actual map of Toulouse with…
Read more

5 December 2015 1