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Carol Blackwood – Geo User Support Vivienne Mayo – User Support Digimap Roam webinar 12 th November 2014
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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
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Roam Zoom in/out, 14 fixed scale map views of different OS maps Save within Digimap, Print A4-A0 Search, Map tools, Overlays, Basemaps Map Content, Map Information
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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
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Map 1 – Helvellyn Place name search Zoom out Map Content: only want to display water and land features Measure shape Overlays – add hillshading
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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
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Place name Gazetteer Place name search uses the OS 1: 50000 Scale Gazetteer Same database that is used on the Landranger Maps
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Zoom in/out Map centred on Helvellyn Now I can zoom in/out and pan around
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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
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Zoomed out to Metropolitan View
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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
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Map Content On this map, we are only displaying land and water features Removed roads, boundaries, tourist features etc
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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
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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.
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Measurements Available under Map tools Measure distances or areas Not possible to save the measurements or print on your map
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Hillshading Will be other overlays available in future
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Map 2 – Archaeological dig site Search using a postcode Zoom in Add a polygon and a label Basemaps Print Save options
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Search with postcode
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Zoom in
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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.
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Annotation tools Now, we want to add a polygon over the empty site Easier to select colour and line colour/width before you draw
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Adding polygon Click once on each point Double click at last point to close it
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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
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Add Measurement Label
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Print
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Note 2 tabs: 1.Content shows type of map 2.Layout shows area covered by map (changes if select different scale or paper size)
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Map and legend If you select Add Legend option, receive a zip file Zip file contains 2 PDF files, map and legend
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PDF print example
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Legend extract
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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
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Display annotation in another Roam
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Display annotations in another Roam
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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
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Map 3 – Carlisle Flood areas Import the flood warning area polygons Change basemap Map Content Label the rivers
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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
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Map displaying imported file
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Zoom out to District View
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Map Content, basemap, labels for rivers
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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?
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Training We can run a course at your institution. Materials to run your own workshops available in Digimap Resource Centre:
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Questions Ask us anything!
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