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Carol Blackwood – Geo User Support
Vivienne Mayo – User Support
Digimap Roam webinar
12th November 2014
Digimap’s Ordnance Survey Collection
What can I do with Roam?
• View current OS maps
• Customise your map:– Add annotations– Select map features– Select different basemap– Add hillshading
• Measure lines and shapes
• Save map within Roam
• Import your own map data – points, lines or polygons
• Print A4 – A0
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
Look at all Roam features:
1. Helvellyn– Search, navigate, select map features, measure, add hillshading
2. Archaeological dig site– Change basemap, add polygon & label, save, print
3. Carlisle Flood Warning areas– Import your own map data
Map 1 – Helvellyn• Place name
search• Zoom out • Map Content:
only want to display water and land features
• Measure shape• Overlays – add
hillshading
Search
• Can pan/zoom to your location, or use Search
• Tab 1: place name/ road / postcode
• Tab 2: British National Grid reference or Lat/Long
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• 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 NSEW on the compass
• Full extent / Previous / Next views
Zoomed out to Metropolitan View
Map Information
Details:• Map product• Data licence – 2 possibilities:
– OS Licence (Digimap licence, educational use only)
– OS OpenData (wider use permitted, see OS Open Data website for full details)
• Date of creation by OS• Default print scale• Grid references
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
• Unavailable when you are viewing a raster map - when unavailable, you will see the message ‘View has no layer selection’
• TIP: check the basemaps for alternative maps where feature selection may be possible
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.
Measurements
• Available under Map tools
• Measure distances or areas
• Not possible to save the measurements or print on your map
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 map, some of 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: 1. add standalone
label, 2. 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
Note 2 tabs:1. Content shows
type of map2. Layout shows
area covered by map (changes if select different scale or paper size)
Map and legend• If you select Add Legend
option, receive a zip file
• Zip file contains 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
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
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
• For our map, we will import 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, basemap, labels for rivers
Resources• Chat tool – users
can chat to staff in office hours. Well used.
• Digimap Resource centre:– Working to
streamline and organise.
– New YouTube videos.
• What do you need?
Training
• We can run a course at your institution.• Materials to run your own workshops available in Digimap
Resource Centre:
Questions
• Ask us anything!