opendata - Mixedbredie's Ghosts

Blender Landscapes: Skye

Another attempt at Blender landscapes using the Ordnance Survey Terrain50 DTM and Meridian2 datasets. The Meridian2 features are draped over the DTM which is vertically exaggerated by 150%. Water features and a sea layer are used to create an image texture. This is used in a UVmap to create the

data

Merging CSV files

Let's say you want to merge a whole directory of CSV files into one large file to make data management easier. For example, the Ordnance Survey Code-Point Open dataset comes as multiple nested CSV files (121 of them) in one large zip archive. In addition to merging the files into

qgis

TIN with FME

Using OS Terrain50 with VectorMap District's water and woodland polygons I used Safe's FME Desktop to generate a landscape inspired by Owen Powell's work. FME lets you export the triangular faces of the TIN as polygons. Using the FME Data Inspector to view the surface in 3D. Rendered in QthreeJS

pgrouting

The QGIS Road Graph plugin

QGIS offers a plugin that will solve a shortest path problem across any vector polyline layer in any format - the Road Graph plugin. The advantage of using this plugin over pgRouting is that you don't need to do anything special to your polyline layer to route across it. As

pgrouting

Improving pgRouting Performance

The Network I've loaded up the new Open Roads network dataset from Ordnance Survey into PostGIS and got it working with pgRouting. I can route successfully from A to B across the network. The problem is that it is so slow. There are 3.18 million road links and 2.

ordnance survey

pgRouting and OS Open Roads

Get the data you need from OS: http://www.ordnancesurvey.co.uk/business-and-government/products/os-open-roads.html Load the data into PostGIS using QGIS or pgAdmin or ogr2ogr - your choice. This takes some time to process as there are a large number links making up the network: 3.6 million

ordnance survey

OS Open Map Brinjal style

It's dark. It's brooding. Is it bruised? No, it's a simple dark rendering of the Ordnance Survey's Open Map Local product. The style sheets were created in QGIS and are available from Github. I only used the roads, buildings, surface and tidal water layers, and a very muted styling of

ordnance survey

OS Open Map Camper style

Here's another set of QML files for QGIS for styling up the new open data Open Map Local from Ordnance Survey. It's a little bit retro and uses nice clean colours and some different fonts. It doesn't use all the layers from Open Map (that's the beauty of working with

ordnance survey

QGIS styles for OS Open Map

Ordnance Survey recently released beta versions of new open datasets - Open Map, Open Roads, Open Rivers and Open Names. Along with the data there are some associated stylesheets to let you recreate to classy OS styles in your favourite desktop GIS. Using the OS stylesheets as a starting point