Sandeep Dhakal’s Jupyter notebooks

Efficiently dissolving adjacent polygons by attributes in a large GIS database

GIS

PostGIS

Using PostGIS to efficiently dissolve adjacent polygons by attributes in a large-table with >750k rows of data.

Spatial KDE plots in Python

GIS

I frequently use KDE plots for my work, but I have not previously used them for spatial analysis. I found a really cool example here using the geoplot Python library. geoplot…

Animated scatter plot with size legend with matplotlib

animation

matplotlib

I have been looking at generating animated plots using Matplotlib, with the official documentation providing an excellent example for basic animations.

Zonal statistics: mean elevation of brisbane suburbs

GIS

DEM

As part of my geospatial analysis journey and the mapping of various things in Brisbane, in this notebook I will look at the digital elevation data of Brisbane suburbs.

Visualising preference flows in 2024 QLD state elections

sankey

elections

I have recently written a dashboard to explore the preference flows of votes during the 2024 QLD state elections. The dashboard is available here.

Visualising Earthquakes in Nepal

GIS

earthquakes

In this notebook, we will analyse the earthquakes that occurred in Nepal since 2010.