QGIS UK User Group 27th September 2013

www.cswbroadband.org.uk
Using QGIS in the
BDUK Superfast
Broadband Roll-out
Chris Page
20th September 2013

Overview
• Background
– Project Overview, Broadband over Copper – a distance problem, FTTP (£143m)
or FTTC (£15m) Two solutions
• Delivering maps to users on slow broadband
– CSW Broadband Maps
– Using Seadragon with QGIS

BACKGROUND
Broadband Delivery UK – Coventry, Solihull and Warwickshire Project

Project Aims
• Superfast Broadband for 90% of premises; and
• Basic Broadband for all other premises
• Benefit the maximum number of citizens
• Remove the barrier of connectivity for businesses to
do business in the sub-region
• Ensure a network deployment that contributes the
most to the underlying fibre infrastructure across
the sub-region

Additional
Requirements
• A mechanism that ensures that project
outcomes reflect the relative funding
contributions of the Local Body Beneficiaries
so that local outcomes reflect the amounts
contributed
• Areas that have a concentration of business
subscribers – minimum line speed of 100
Mbps

Timeline
• 3rd March 2012 – Local Broadband Plan approved
• 26th October – Open Market Review completed
• 20th January 2013 – Public Consultation completed
• 28th January 2013 – ITT Issued
• 9th April – responses received
• 10th - 24th April – responses evaluated
• May 2013 – Contract with BT, negotiations & signature
• 6th June – Project launch
• March 2014 – target date for first connections

• “As a result of our pre-procurement discussions with the broadband
providers we have received updated Open Market Review data that shows
an extra 44,690 properties now being brought into the commercial roll-
out, meaning that the money within the CSW Broadband project will go that
much further.”
• “Thanks to the information provided by our local communities through
their Local Broadband Champions and the surveys on our website, our
team has been in discussions with BT about areas that have been omitted
from their commercial roll-out plans.”
• “At both Warwick Gates and Coton Park we were able to show that there
were sufficient potential subscribers for superfast broadband services to
make a clear business case for BT to invest in these areas.”
• “Through the data that we have collected over the past couple of years we
have good knowledge of our area and so were able to apply to BDUK for
additional funding. This means that with match funding an additional
£750,000 has been brought to the project, which has yet to be allocated to
the rollout programme.”
Impact of Analysis
and Mapping

From Open Market Review
data:
• White - no broadband
infrastructure exists or is
unlikely to be developed in the
near term – intervention areas
• Grey - only one broadband
network operator is present
• Black - at least two or more
broadband network providers
are present

From BAFO on September
2013:
• White – between 2
Mbps and 23 Mbps
• Amber – between 24
Mbps and 80 Mbps
(~5% will not achieve
this)

Delivering over
Copper, a problem
of distance
Loop Length is
measured in kilo feet

DELIVERING MAPS TO USERS OF
SLOW BROADBAND

Setting User’s
Expectations
• FTTP and FTTC design done by SPATIALinfo
• QGIS used to map AddressBase Premium
data, coloured to show distance, hence speed
• This allowed us to answer questions and
analyse our region to aid procurement
• Like to provide access by the public
• Budget £0, time allocated 2 person days

What did we get?
How did we do it?
• 2,915,803,968 pixel map but fast download
• Demo: www.cswbroadband.org.uk/seadragon6.php
• Deep Zoom (Seadragon) selected
• QGIS to produce map tiles
• Deep Zoom Composer (version 1.0.1945.1)
www.microsoft.com/en-GB/download/details.aspx?id=24819
– Since found OpenSeadragon
openseadragon.github.io/
• Tableau for analysis and interactive layer
http://public.tableausoftware.com/views/CrowdsourcedBTCabinets/MapofCabinets?:embed=y&:display_count=no

Deep Zoom
Composer
• Import map tiles
• Compose, tiles snap together
• Overlay region maps
• Set visability of each map tile
• Export using Ajax

Deep Zoom
Composer
• Remember to set visibility:
Max/Min zoom to see layer
– Set Tiles Min
– Set Region Min and Max
– Set Miniscale Max

Print Composer
v1.8 (ComposerMap)
• <Composer title="DZC5" visible="0">
• <ComposerMap
keepLayerSet="false" id="0" previewMode="Cache"
drawCanvasItems="true">
– <Extent
• ymin="265000"
• xmin="432000"
• ymax="277000"
• xmax="440000" />

Print Composer
v1.8 (ComposerItem)
• <ComposerItem
width="400" x="0" y="0" rotation="0" height="600"
– frame="false" outlineWidth="0.3" zValue="1"
– lastValidViewScaleFactor="0.870216"
– id="" positionLock="true">
– <FrameColor alpha="255" red="0" blue="0" green="0"/>
– <BackgroundColor alpha="255" red="255" blue="255"
green="255"/>
• </ComposerItem>
• </ComposerMap>

Print Composer
v1.8 (Composition)
• <Composition
• printResolution="300"
• paperWidth="400"
• snapGridOffsetX="0" snapGridResolution="0"
snapGridOffsetY="0" snapping="0"
• paperHeight="600"
• printAsRaster="0“ />
• OS units of tile Width=8,000 Height=12,000

Grid to find x,y
313,000 DZC5, for example, is specified as:
yMax = 277000
yMin = 265000
xMin = 432000
xMax = 440000
301,000 DZ01 DZ02 DZ03 DZ04 DZ05 DZ06 DZ07 DZ08
289,000 DZA1 DZA2 DZA3 DZA4 DZA5 DZA6 DZA7 DZA8
277,000 DZB1 DZB2 DZB3 DZB4 DZB5 DZB6 DZB7 DZB8
265,000 DZC1 DZC2 DZC3 DZC4 DZC5 DZC6 DZC7 DZC8
253,000 DZD1 DZD2 DZD3 DZD4 DZD5 DZD6 DZD7 DZD8
241,000 DZE1 DZE2 DZE3 DZE4 DZE5 DZE6 DZE7 DZE8
229,000 DZF1 DZF2 DZF3 DZF4 DZF5 DZF6 DZF7 DZF8
217,000 DZG1 DZG2 DZG3 DZG4 DZG5 DZG6 DZG7 DZG8
400,000 408,000 416,000 424,000 432,000 440,000 448,000 456,000 464,000

Overview Maps
• <Extent ymin="217000"
xmin="400000" ymax="313000"
xmax="464000"/>
• printResolution changed to select between
maps
– 200 Region Overview
– 100 Miniscale Region Overview

Use existing Tiles

OpenStreetMap
• <script type="text/javascript">
• OpenSeadragon({
• id: "example-inline-configuration-for-osm",
• prefixUrl: "/openseadragon/images/",
• showNavigator: false,
• wrapHorizontal: true,
• zoomPerScroll: 1.2,
• minZoomImageRatio: 0.5,
• tileSources: [{
• type: 'openstreetmaps'
• }]
• });
• </script>
• http://openseadragon.github.io/examples/tilesource-osm/

Tile Map Services
• <script type="text/javascript">
• OpenSeadragon({
• id: "example-inline-configuration-for-tms",
• showNavigator: false,
• zoomPerScroll: 1.2,
• minZoomImageRatio: 0.5,
• tileSources: [{
• type: 'tiledmapservice',
• tilesUrl: 'http://tilecache.osgeo.org/wms-c/tilecache.py/1.0.0/basic/',
• width: 256 * 65534,
• height: 256 * 32767
• }]
• });
• </script>
• http://openseadragon.github.io/examples/tilesource-tms/

Custom Tile
Sources
• <script>
• OpenSeadragon({
• id: "example-custom-tilesource",
• navigatorSizeRatio: 0.25,
• tileSources: {
• height: 512*256,
• width: 512*256,
• tileSize: 256,
• minLevel: 8,
• getTileUrl: function( level, x, y ){
• return "http://s3.amazonaws.com/com.modestmaps.bluemarble/"+(level-8)+"-r"+y+"-c"+x+".jpg";
• }
• }
• });
• </script>
• http://openseadragon.github.io/examples/tilesource-custom/

Questions?
Thank You

QGIS UK User Group 27th September 2013

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