Guides
What each sitedia plate computes for a site in London, from which data, and where its limits are.
Each guide explains how a plate is calculated and what it does not show. If a plate does not look as expected, read the Limitations section of that plate's guide. The UK edition covers Greater London (the 32 London boroughs and the City of London).
Introduction
- How to draw a site analysis diagram
Order and principles for preparing site analysis plates, the manual process and the part sitedia automates
- The 24 plates
How the set is composed, what each plate shows, what it is used for and its limits in London
- Site overview and section
London Plan designations by share of the site, the area within the radius in numbers, and a section at true vertical scale
Plates
- Sun hours map
Shadows solved every 10 minutes and summed over the day, the three values on the sheet, and why it is not a daylight and sunlight assessment
- Slope diagram
Bands at 5, 10, 15 and 20°, the 50 m smoothing, and the 30 m surface model behind it
- Plot size diagram
HM Land Registry title polygons coloured by area in 5 bands, overlapping titles and very large institutional titles
- Trees
Borough-managed trees from the GLA London Public Realm Trees list, crowns estimated from the tree records, and the trees that are not in it
Analysis
- Sun path and shadow diagrams in the browser
The sun path diagram, the 3D shadow model, date and time (GMT)
- Wind rose and urban airflow
Observed frequency in 16 directions from the St James's Park weather file, and airflow between buildings (LBM)
- Thermal comfort (UTCI) map
Weather, wind, shade and ground cover combined into a felt temperature, and the known biases
Export
- Finishing the SVG
Layer structure, recolouring, scale in metres, PNG resolution and DXF
- 3D export: GLB, 3DM, SKP
Formats, colour modes in the file, opening in SketchUp, and LiDAR heights
UK data
- Land Registry plotsUK
HM Land Registry INSPIRE Index Polygons: indicative extent, overlapping freeholds and unregistered land
- Planning designations in LondonUK
Why there is no zoning plate as such, and what the ZONING, DISTRICTS & ZONES and PLANNED FACILITIES plates show instead (CAZ, Opportunity Areas, conservation areas, listed buildings, LVMF views, Article 4)
- Building age from EPCUK
Construction age bands from domestic Energy Performance Certificates, Colouring Britain as a fallback, and why non-residential buildings are often grey
Reference
- Data sources
Publisher, licence and date of each dataset used in the UK edition
- Frequently asked questions
Coverage, missing buildings, grey «Unknown», radius, compute times, files, passes, licensing and attribution
Guides for the other editions: Korea · United States · Japan · Spain.