pgrouting Voronoi isochrones How can we visualise our driving distance dataset another way? Can we create something like this which is using Voronoi polygons: Palvealueanalyysi avoimella lähdekoodia #Hämeenlinna #PostGIS #pgRouting #sote #OSGeofi pic.
pgrouting Processing thousands of journeys: a pgRouting function I have a dataset of pupils and the schools they attend. For each pupil I have a source XY coordinate and a target XY coordinate. I have a table of
pgrouting Batch driving distance - a pgRouting function A function to batch process driving distance results for a set of input points, in this case, schools. The function creates a table to hold the results (dropping it if
pgrouting Driving Distance Animations with pgRouting - a how to Checklist QGIS with the Time Manager plugin installed. a PostgreSQL database with PostGIS and pgRouting extensions installed. access to said database through psql or pgAdmin3/4 A quick and dirty
qgis TauDEM Toolbox in QGIS You might want to use the TauDEM Toolbox in QGIS. The QGIS docs give you all the detail on the available algorithms but you need to install and configure the
blender 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
blender Blender Landscapes Inspired by an image created by Owen Powell I thought I would have a look at Blender again and see what I could get it to do with elevation and
DEM Texture shading your hillshade These guys do amazing things creating maps - John M. Nelson, Stephen "Mapsmith", Craig Taylor, Daniel Huffman - and their maps, visualisations and images are inspiring. A tweet
qgis QGIS Map Tools at BCS SOC I recently presented at the BCS SOC annual conference in Cheltenham on the cartographic map tools available in QGIS Essen 2.14 and Nødebo 2.16. BCS\_SOC\_2016\_rossmcdonald\_qgis_maptools Props to Nyall Dawson and Nathan Woodrow for the fantastic new features
qgis Hexperiments in QGIS After seeing the post by John Nelson on hex binning using ArcGIS I thought I better try it in QGIS as the effect is pretty neat. Open the Processing toolbox
pgrouting FOSS4G UK 2016 This is my talk on pgRouting from FOSS4G UK 2016. Pgrouting_foss4guk_ross_mcdonald from Ross McDonald My workshop notes and data are available here. The workshop was designed around
pgrouting Building Highways for pgRouting A copy-and-paste post to help you build the new OS Highways for pgRouting. It is still a work in progress so things may change and break. Requires PostgreSQL with PostGIS and pgRouting and a licensed copy of Safe Software's FME Desktop. 1. Load 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
pgrouting pgRouting webinar with OS I recorded a webinar with the Ordnance Survey about the different ways we've been using pgRouting with OS datasets. If you've got 30 minutes spare you can watch it or just read my other blog posts about pgRouting.
pgrouting All-in-one function to create isochrones Well, almost all-in-one. The function currently requires some prep work on the input points before being able to generate the isochrones (alphashapes). The function takes as its arguments the point
pgrouting pgRouting alphashapes - batched A while back I looked at generating alphashapes using pgRouting and displaying in QGIS. It was a pretty convoluted hack though and my SQL skills need some honing. After seeing
dataviz Council Tax Data Viz A simple data visualisation of all properties within development boundaries coloured by council tax band. Multiply blended colours to give an indication of property density which is particularly noticeable in
qgis Uninstalling QGIS with SCCM To make IT sysadmins' lives easier at work (actually, to make my life easier) we use Microsoft's System Centre Configuration Manager (SCCM) to roll out applications to users. We can
postgis ogr2ogr: Oracle to PostGIS Traditionally^ exporting from Oracle to PostGIS involved an intermediate step Oracle to Shapefile and then Shapefile to PostGIS. But this means that field names longer than 10 characters in Oracle
postgis ogr2ogr: PostGIS to PostGIS I recently^ had to update a live database with updated tables from a staging database and then continue to update on a daily basis. As it is a regular update
gis Geeking out on a GIS A couple of months ago Paul Wilson asked a question on KnowledgeHub about the best way to organise data in a GIS. Well, that got the GIS folk out of their data loading torpor and provided some interesting discussion. It highlighted the many different
ghost Getting Varnish, SSL and logging to work with Ghost I have a complex set up. Varnish in front of Apache serving up cached content on port 80. Requests for secure (HTTPS) pages on port 443 are passed through to
gis QGIS 2.12 Lyon QGIS 2.12 Lyon has just been released with a ton of new features. I particularly like the new rule based labeling options giving fine grained control. The change log has a very comprehensive list of all the other new features. Download the latest
qgis 4th QGIS UK user group in Edinburgh The next QGIS user group meeting planning and organising is gathering momentum. A free-to-attend full day of open source goodness where you can ask questions, provide answers and tell people
