Slides used in an EDINA webinar on 6 March 2013, covering the Marine Digimap service. The service offers view and download functions for Admiralty Charts of the UK and surrounding seas, plus Hydrospatial vector mapping data.
1. Content
What is Marine Digimap?
What can I do with Marine Digimap?
Marine Roam
Marine Maps
Hydrospatial Data Download
Charted Raster Download
2. What is Marine Digimap?
• Online service, one
of 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. Content
What is Marine Digimap?
What can I do with Marine Digimap?
Marine Roam
Marine Maps
Hydrospatial Data Download
Charted Raster Download
4. What can I do with Marine Digimap?
View maps online,
print/download PDF,
A3, A4
Download 2 types of
Marine digital map
data
• Charter Raster data
• Hydrospatial data
5. 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 WGS84. Not British
National Grid.
• These data make ideal backdrop maps, but must NOT be used for
navigation. Current Admiralty Charts can be purchased from the UK
Hydrographic Office.
• Last update to data in Marine Digimap in 2005.
6. Charted Raster data
• Marine Maps facility
• Search Charted Raster
Maps
• Grouped into 6 scale
bands; ocean, sea,
general, coastal,
approaches and
harbour (roughly
equivalent to the
usage bands of
Admiralty Charts).
8. 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.
11. Content
What is Marine Digimap?
What can I do with Marine Digimap?
Marine Roam
Marine Maps
Hydrospatial Data Download
Charted Raster Download
13. Views
• Online maps, 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
16. 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
17. Overview Map
• Click and drag red box to
reposition your map
location
18. Map Content Control
• Check the boxes next
to the topics and
layers you wish to
display
• Map updates
automatically
19. Map Content Control
• Basemap Content
View shows a
selection of features
from the
Hydrospatial data,
appropriate to the
scale of your map
view
• Add/remove any
features from the
display >
Customised Content
View
29. Export annotations
• You can export your
annotations, to use
in GIS or other
applications
30. 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
31. Feature Info.
• Click then on your selected feature on the map
• Marker placed where you click
32. 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.
33. Print
• Reposition map by clicking and dragging preview map.
• Set title, grid lines, annotations options.
• Select portrait/landscape, A3/A4.
• Click Generate Print File.
35. Content
What is Marine Digimap?
What can I do with Marine Digimap?
Marine Roam
Marine Maps
Hydrospatial Data Download
Charted Raster Download
36. 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, with
features most relevant to the scale. 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.
37. 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)
38. 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.
40. 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.
41. 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
42. Legend
• The legend shows the more
commonly found symbols on
Marine Maps
• More detailed information
available from the Marine
Lexicon
43. 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
44. Content
What is Marine Digimap?
What can I do with Marine Digimap?
Marine Roam
Marine Maps
Hydrospatial Data Download
Charted Raster Download
45. Hydrospatial Download
Hydrospatial download process:
• Identify product / format
• Search for your location
• Select the required data
• Make download settings
• Download data
48. 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
49. Onward use of data in ArcGIS
Hydrospatial data:
• Older versions of ArcGIS not supported. Can’t guarantee data will work in
ArcView 3.x
• Shape files, no need to convert
• All of the files provided with Shape files must be kept in the same folder
• To view data as it is seen in Marine Digimap, need to download and install 2
folders with cartographic styles and apply these:
– fonts.zip
– style.zip
• Folders and information on applying styles available in Help > Using
data with ArcGIS
50. Content
What is Marine Digimap?
What can I do with Marine Digimap?
Marine Roam
Marine Maps
Hydrospatial Data Download
Charted Raster Download
52. 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)
53. Step 3: Choose data
• Choose the maps
you want from the
list or click on the
map
• Zoom in and out to
see larger or smaller
maps in the area
• Click Continue
• Next step is to
order, then
download data in
zip file
54. Download
• Check order
• Agree ‘aware
not to be used
for
navigational
purposes’
• Click Extract
data
56. What do I download?
• Unzip the folder
from Marine
Digimap to access
the data
57. Download folder contents
• TIFF image is your map
• TIFF image has georeferencing encoded within it
• GIS software will know where to place your map
Hinweis der Redaktion
Last Amended: 3 September 2001
Last Amended: 3 September 2001
Last Amended: 3 September 2001 From Marine Maps you can create a map from one of six predefined scale bands based on the Charted Raster product. The maps in each scale band can be zoomed in and out to best display the selected area. The map can be viewed on screen or printed at A4 size as a PNG format file. The Marine Lexicon (based on the International Hydrographic Organization's ecPilot demo) allows the user to explore the symbols and abbreviations used on Admiralty Charts that are used within Marine Maps. Marine Lexicon is available to any registered user. The Marine Lexicon (based on the International Hydrographic Organization's ecPilot demo) allows the user to explore the symbols and abbreviations used on Admiralty Charts that are used within Marine Maps.
Last Amended: 3 September 2001
Last Amended: 3 September 2001
Last Amended: 3 September 2001 Admiralty Charts – come from SeaZone Solutions Ltd, which is part of the UK Hydrographic Office. hydrospatial is 2008 and 2009 has just arrived - not sure when it'll go live yet (3 Sept 2009) charted raster is 2006 The Usage Band's map scales used in Marine Maps are as follows: 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) Why can I see black triangular slivers around some of the Marine Maps? The Marine Maps facility in Marine Digimap uses the Charted Raster product to build up a mosaic of maps for each scale band. These mosaics are made up of many different maps and each one has its own geographical projection. In order to display the mosaics as a continuous map each individual map has to be reprojected so that they are all the same. As most of the maps' projections are very similar they fit well together. However, some have been rotated considerably to fit with the other maps; in these cases it is possible that you will see black triangular slivers between them and the surrounding maps.
Last Amended: 3 September 2001
Last Amended: 3 September 2001 Zoom bar at the left is handy where the maps in a usage band have varying scales.