Mostly so I myself can remember how to do it, here is how to create a random geotiff with GDAL in Python Note: the width and height are given in opposite order in the GDAL raster and numpy arrays! import…
pyproj is a Python interface to the PROJ.4 () functions. It allows you to transform coordinates between coordinate systems. Install pyproj using pip Assuming you’re using pip to install Python packages: $ pip install pyproj
Here is a map application that illustrates very well the different tile schemes used (TMS, QuadTree, Google Maps):
Online documentation for GDAL/OGR Python is sparse. Here I show some recommended ways of learning more about GDAL/OGR in Python. Using Python interpreter You can learn about GDAL and OGR from inside the Python interpreter. Start python interpreter: $ python…
GDAL is not very well documented, and a complete Python API documentation site is not something I’ve found. So here are the best tutorials I’ve found so far for GDAL + Python. GDAL Python samples on osgeo.org
Simple CSV file import You have a CSV file called “data.csv”. It has a header line, and is delimited using “;”. You want to import it into Postgres and a table called “your_table”: Create the database table. Set column-types so…
Assuming a shapefile called myshapefile.shp, a table mytable in schema xyz, in a PostGIS enabled database called mydb on localhost. The table is owned by user dbuser who has password “secret”. Using shp2pgsql shp2pgsql myshapefile -I xyz.mytable > statements.sql psql…
Google Fusion Tables is a service for storing tabular data online. It has an API that allows you to make an SQL-like request for data from an online table, like the following: sql=SELECT * FROM 1906375 (clicking the link will…
Previous effort In a previous post I tried generating OpenStreetMap tiles using GeoServer. It ended when I couldn’t find a good style (SLD) to apply the OSM layer. The (new) idea, that also failed miserably In this post I tried…
Warning: This is a description of how to create a OpenStreetMap WMS with GeoServer. It works fine up to the point where the layers published as an unstyled WMS. This is where I’ve not been able to produce a good…