Guy McGarva – Geo User Support

Ian Holmes – Geo User Support

Vivienne Carr – User Support

Digimap: Making the most of Roam

Digimap’s Ordnance Survey Collection

View, annotate and print OS maps

Roam

Zoom in/out, 14 fixed scale map views of different OS maps

Save within Digimap, Print

A4-A0Search, Map tools,

Overlays, Basemaps

Map Content, Map Information

Content

• Map 1 Helvellyn– Search, navigate, select map features, add hillshading

• Map 2 Archaeological dig site– Change basemap, add polygon & label, save, print

• Map 3 Carlisle Flood Warning areas– Import your own map data

Digimap Training Workshops

Map 1 – Helvellyn

• Place name search

• Zoom out • Map Content:

only want to display water and land features

• Overlays – add hillshading

Search

• Can pan/zoom to your location, or use Search

• Place name/ full postcode

• Advanced Search offers British National Grid reference search

• Coming soon: postcode districts e.g. EH9, street names

Place name Gazetteer

• Place name search uses the OS 1: 50000 Scale Gazetteer

• Same database that is used on the Landranger Maps

Zoom in/out

Digimap Training Workshops

• Map centred on Helvellyn

• Now I can zoom in/out and pan around

Navigation

• Zoom in/out– Click on any notch on the scale bar– Double click to zoom in– Scroll wheel on mouse

• Pan– Click and drag the map– Click on NSEW on the compass

• Full extent / Previous / Next views

Zoomed out to Metropolitan View

Map Content

• On this map, we are only displaying land and water features• Removed roads, boundaries, tourist features etc

Map Content

• Feature selection available in 8 of Roam’s 14 views

• When unavailable, you will see the message ‘View has no layer selection’

• Unavailable when you are viewing a raster map

Raster v Vector map data

• Raster map data is a matrix of cells (or pixels) in a grid:

– scanned maps, digital aerial photographs, satellite images, digital pictures.

– geo-referenced, geographic coordinates of the location added.

– useful as background for displaying other data.

• Vector map data stores data on individual map features e.g.

– Points such as train stations.– Lines such as railway tracks

and rivers.– Polygons such as buildings or

fields.– We can view, query and

analyse vector map data.

Hillshading

• Will be other overlays available in future

Map 2 – Archaeological dig site

• Search using a postcode

• Zoom in• Add a

polygon and a label

• Basemaps• Print• Save

options

Search with postcode

Zoom in

Basemaps

• Basemaps offer maps at same scale, in a different cartographic style

• Available in several of Roam’s map views:

– Plan, Building and Detailed– Street, Neighbourhood– District– City, Metropolitan

• Tip: in Street and Neighbourhood views, switching basemap means you can select features in Map Content…default is raster, basemaps are vector.

Annotation tools

• Now, we want to add a polygon over the empty site

• Easier to select colour and line colour/width before you draw

Adding polygon

• Click once on each point

• Double click at last point to close it

Label the polygon

• Two options: add standalone label, or add label to the polygon (if you move polygon, label moves with it)

• Again, easier to select font options before adding label

Add Measurement Label

New print interface

New print interface

• What’s new?– Content and

Layout Previews

– Legend option

Map and legend

• If you add the legend option, receive a zip file

• Extract the files to see 2 PDF files, map and legend

PDF print example

Legend extract

Save

• Save > My Maps saves your map within Digimap– No limit to number of maps you can save– Available as long as your registration

remains active

• Open > My Maps to retrieve your saved maps

Digimap Training Workshops

Display annotation in another Roam

Display annotations in another Roam

Export annotations

• Save > Annotations to file, to export annotations

• Could then use in GIS/CAD, combine with your own data etc

• Formats:– Shapefile can be used in most

GIS/CAD software– KML can be displayed in Google

Earth– GeoJSON useful for displaying in

web maps

Digimap Training Workshops

Map 3 – Carlisle Flood areas

• Import the flood warning area polygons

• Change Basemap

• Map Content• Label the

rivers

Import Flood warning areas

• Possible to import your own map data to Roam– Various formats can be imported– Only importing the point, line or

polygon, not any associated information

• We have a Shapefile of polygons of Flood Warning areas– Source of this data is the

Environment Agency website

Map displaying imported file

Zoom out to District View

Map Content, Basemaps, Labels for rivers

Keep in touch

• EDINA Helpdesk– email: edina@ed.ac.uk– telephone: 0131 650 3302

• http://digimap.blogs.edina.ac.uk/

• http://www.facebook.com/EDINADigimap

• http://www.youtube.com/user/EDINADigimap

• http://twitter.com/edina_digimap