Slides used in a workshop on the Marine Digimap service. The subscription service provides marine mapping data to UK further and higher education.

1. Content
 What is Marine Digimap?
 What can I do with Marine Digimap?
 Marine Roam
 Marine Maps
 Hydrospatial Data Download
 Charted Raster Download
 Exercises:
 Marine Roam
 Use data in ArcGIS

2. What is Marine Digimap?
• Online service, one
of 4 Digimap
collections of
geospatial data
• Subscription
service, user
registration
required
• SeaZone Solutions
data, licensed by
JISC for use in
education
• 2 datasets are used
in the service,
Hydrospatial and
Charted Raster

3. Charted Raster Data
• Raster data product, used to create online maps in Marine
Maps within Marine Digimap.
• Scanned Admiralty Charts covering the UK and the
surrounding seas from 1:3.5million to 1:2,500.
• Data supplied as GeoTiff images, ready for use in a GIS.
• Each map has its own projection, referenced to the Horizontal
WGS84 Datum.
• These data make ideal backdrop maps, but must NOT be used
for navigation.
• Last update to data in Marine Digimap in 2005.

4. Data in Digimap – 2 types

5. Hydrospatial Data
• Vector data product from SeaZone, designed for use in a GIS:
http://www.seazone.com/dataHydroSpatial.php
• Used to create online maps in Marine Roam, within Marine Digimap.
• 7 Topic Layers – each layer has themes:
–Bathymetry and Elevation
–Socio-Economic and Marine Use
–Conservation and Environment
–Structures and Obstructions (themes include Navigation Aides, Obstructions, Offshore
Installations, Shoreline Constructions and Wrecks)
–Climate and Oceanography
–Natural and Physical Features
–Metafeatures and Cartography
• Data is collected at various scales, the best available for each source.
• Projected in WGS84 not British National Grid.
• Available in 2 formats - Shapefile (for ArcGIS), MapInfo Tab.
• Last updated in Marine Digimap in 2011.

6. Hydrospatial Data

7. Content
 What is Marine Digimap?
 What can I do with Marine Digimap?
 Marine Roam
 Marine Maps
 Hydrospatial Data Download
 Charted Raster Download

8. What can I do with Marine Digimap?
Create maps to view
in browser or
print/download.
Explore Marine
Lexicon –
descriptions of
marine map
features
Download 2 types of Marine digital data
• Hydrospatial data
• Charted Raster data

9. Content
 What is Marine Digimap?
 What can I do with Marine Digimap?
 Marine Roam
 Marine Maps
 Hydrospatial Data Download
 Charted Raster Download

10. Marine Roam
Task Menu: search,
customise, save
Tools: measure,
annotate,
identify,
navigation
Map panel

11. Views
• Online map creation, uses Hydrospatial data
• Print/download A3/A4 PDF maps
• 13 fixed scales, ranging from 1:2500 to 1:5,000,000
• Zoom in and out of different scales
• Not all details from Hydrospatial data can be viewed at
each scale
• Default view or ‘Basemap content view’ – contains a
selection of layers from the data appropriate for that
scale
• Select layers of your choice for ‘Customised content view’
– in Map Content Control

12. Basemap Content View

13. Map Content Control
• Check the boxes next
to the topics and
layers you wish to
display
• Map updates
automatically

14. Basemap Content View

15. Customised Content View

16. Customised Content View

17. Search options
• Place name search uses
Ordnance Survey
database, 1:50000 Scale
Gazetteer

18. Navigate
• Zoom in – double click or use scroll wheel
• Click on scale bar to zoom in/out
• Click and drag on map to move around
• Or use compass to move NSEW

19. Overview Map
• Click and drag red box to
reposition your map
location

20. Map Information
• Displays:
– coordinates of
current map,
– print scale, and
– cursor coordinates

21. MyMaps
• Save up to 200
maps within
MyMaps
• Click any entry in
the list to
regenerate that
map

22. Measurement tools

23. Measurement tools

24. Annotation tools
• Add markers, shapes, labels
• Set text and shape and line colours before
you start to draw!

25. Annotation tools

26. Import annotations
My Annotations area:
•Save annotations within Marine Roam.
•Retrieve annotations next time you login – can also display annotations
added in other Digimap Roam applications.

27. Export annotations
• You can export your
annotations, to use
in GIS or other
applications

28. Import annotations
• You can import spatial datasets
into any Roam application to
view those features as
annotations. This could be a
dataset you have created in a
GIS, downloaded from Digimap
or another data provider, tracks
or points surveyed using a GPS
unit or a geocoded table of
survey results.
• You can import Shapefiles, KML,
GPX, CSV and GeoJSON
datasets.
• In this example we uploaded a
zip file, which contained a
Shapefile (and other associated
files)
• Location of operational
windfarms in GB

29. Feature Info.
• Click then on your selected feature on the map
• Marker placed where you click

30. Print
• If you have all layers selected (in the Map Content Control area),
likely to receive an error message.
• De-select some layers and try again.

31. Print
• Reposition map by clicking and dragging preview map.
• Set title, grid lines, annotations options.
• Select portrait/landscape, A3/A4.
• Click Generate Print File.

32. PDF print

33. Content
 What is Marine Digimap?
 What can I do with Marine Digimap?
 Marine Roam
 Marine Maps
 Hydrospatial Data Download
 Charted Raster Download

34. Marine Maps
• Online map creation, uses scanned Admiralty Chart images (Charted
Raster data)
• Print/download A4 maps
• The maps are grouped into 6 scale bands; ocean, sea, general, coastal,
approaches and harbour (roughly equivalent to the usage bands of
Admiralty Charts).
• Each scale band features a different set of Admiralty Charts. The
scanned images are used to build up a mosaic of maps for each scale
band.
• Scales vary from 1:3.5million to 1:2,500.
• These make ideal backdrop maps, but must NOT be used for navigation.

35. Scale/Usage bands
• Ocean - small scale ( 1:3,500,000 to 1:750,000)
• Sea - small scale (> 1:750,000 to 1:300,000)
• General - small to mid scale (1:200,000 to 1:100,000)
• Coastal - mid scale ( 1:100,000 to 1:50,000)
• Approaches - mid to large scale ( 1:50,000 to 1:15,000)
• Harbour - large scale ( 1:25,000 to 1:2,500)

36. Marine Maps
• Source maps may
be at different
scales.
• In Marine Maps,
maps of different
source scales are
viewed at same
scale…so you may
find some
differences in detail
in adjacent areas.

37. Opening screen

38. Marine Maps home page
• Use the drop down menu to
view areas covered by different
usage bands.
• To search, enter details in a
search box or click on the map
to go to your area of interest.

39. Different map views
• Switch views by clicking on
the icons above the map
• Zoom in and out of that
view, using the bar to the
left of the map

40. Location map
• Click and
drag the
pink square
on the
Location
map to
reposition

42. • Select a
different scale
band

43. Legend
• The legend shows the more
commonly found symbols on
Marine Maps
• More detailed information
available from the Marine
Lexicon

44. Marine Lexicon
• Marine Lexicons allows
you to explore the
symbols and
abbreviations used on
Marine maps
• Uses data supplied by the
UK Hydrographic Office
and the International
Hydrographic Association

45. Marine Lexicon

46. Map Chest
• Maps can be saved in Map
Chest
• Unique to each user
• Maps erased after 5 days
• Print from Map Chest as:
– PNG format, A4

47. Marine Maps print

48. Content
 What is Marine Digimap?
 What can I do with Marine Digimap?
 Marine Roam
 Marine Maps
 Hydrospatial Data Download
 Charted Raster Download

49. Download services
2 download services:
•Hydrospatial – vector
map data, used to create
maps in Marine Roam
•Charted Raster
Download, displayed in
Marine Maps

50. Hydrospatial Download
Hydrospatial download process:
• Identify product / format
• Search for your location
• Select the required data
• Make download settings
• Download data

51. Step 1: select product/format

52. Step 2

53. Step 4: Choose data

54. • ESRI Shapefile - an ESRI data format for storing vector data. Shapefiles are compatible
with ArcView 3.x and all ArcGIS versions, as well as being compatible with many other GIS
packages
• A shapefile is actually made up of several component files, the main ones are listed
below:
– .shp - the file that stores the feature geometry.
– .shx - the file that stores the index of the feature geometry.
– .dbf - the database of attributes.
• MapInfo TAB - this format is the MapInfo GIS proprietary data format. TAB files can be
opened directly in MapInfo and can be viewed and worked with directly.
• The TAB data comes as four files:
– .dat - The file which stores the attribute data.
– .tab - The ASCII file which is the link between all other files and holds information about the type of data file.
– .id - Stores information linking graphic data to the database information.
– .map - Stores the graphic and geographic information needed to display a map on the users screen.
• Marine Digimap supplies TAB files with .wor files. These Workspace files contain all the
information needed for displaying the data properly.

55. Data layer selection
• Each product has layers of detail.
• Depending on the area selected for
download, they may not all be
available.
• Example:
– Structures and Obstructions
• Navigation Aides
• Obstructions
• Offshore Installations
• Shoreline Constructions
• Wrecks

56. Download

57. What do I download?
• Download data.zip file, renaming if you wish
• The Conditions and Contents files you see listed are
included in your Data.zip file

58. What do I download?
• Must extract
the data from
the zip archive
• Standard
Windows unzip
utility can do
this

59. Download contents
• Shape file for
each theme,
e.g.
Bathymetry
region
• Keep all files
together…SHP
file will not
work without
the associated
files

60. Using Hydrospatial Data in ArcGIS
• Data, viewed in ArcGIS, has no cartographic symbolisation
• Can apply this via a style file, supplied in the Help pages:
http://digimap.edina.ac.uk/webhelp/marine/using_data_with_gis/using_data_with_arcgis.htm
• OR, download the ArcGIS MXD project file shown in the image above. Add
your data to the relevant project layer – get the MXD file here:
http://digimap.edina.ac.uk/webhelp/marine/data_information/products_available/hydrospatial_data.htm

61. Content
 What is Marine Digimap?
 What can I do with Marine Digimap?
 Marine Roam
 Marine Maps
 Hydrospatial Data Download
 Charted Raster Download

62. Charted Raster Download – 4 step process

63. Step 1: Search
1. Select the Scale bands of
interest
– use the coverage map
to see which bands
are available for your
area
– bands deselected can
be added back in
when choosing maps
1. Search using one of the
options (Select your
location from the list of
results, if applicable)

64. Step 3: Choose data
• Choose the maps
you want from the
list or click on the
map
• Zoom in or out to
see fewer or more
maps in the area
• Once you have
selected your maps,
click Continue
• Next step is to
order, then
download data in
zip file

65. Download
• Check order
• Agree ‘aware
not to be used
for
navigational
purposes’
• Click Extract
data

66. Download
• Click Data.zip file
• Save File

67. What do I download?
• Unzip the folder
from Marine
Digimap to access
the data

68. Download folder contents
• TIFF image is your map
• TIFF image has georeferencing encoded within it
• GIS software will know where to place your map

69. Exercise - Roam
• Suggested searches: Forth Bridge, Portsmouth
• Things to try:
– Create a Customised Content View
– Save your map in My Maps
– Annotations – add some markers
– Save your annotations (NOTE: do this in Annotations toolbar, not
My Maps)
– Import the annotations file Wind Farms GB operational

70. Exercise – View data in ArcMap
1. View our data folder: DesktopArcGIS data
2. Open ArcMap
3. Open some Hydrospatial data in ArcMap…Wrecks
Points
4. Add Ordnance Survey data for context
5. Apply SeaZone style to Hydrospatial data
6. Label Wrecks
7. Explore Wrecks data
8. Add Wind farm data
9. Open Charted Raster data