Published on February 19, 2014
Digimap: Making the most of Roam Guy McGarva – Geo User Support Ian Holmes – Geo User Support Vivienne Carr – User Support
Digimap’s Ordnance Survey Collection View, annotate and print OS maps
Roam Save within Digimap, Print A4-A0 Map Content, Map Information Search, Map tools, Overlays, Basemaps Zoom in/out, 14 fixed scale map views of different OS maps
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 • Map centred on Helvellyn • Now I can zoom in/out and pan around Digimap Training Workshops
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
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
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: firstname.lastname@example.org – 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
This webinar will demonstrate how to view, customise and print Ordnance Survey maps in Roam.
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