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: [email protected]– 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