 |
Using the main map page
On opening the webpage you are presented with a map or aerial photo which
can be dragged and zoomed with the mouse wheel or +/- icon, as can all the
maps on the site.
Specific data for the displayed map will appear in the left panel along with
a notification of the number of alternate maps at the selected scale for that
location. Use the drop down box to select another map.
The map selection offered will depend on the choice of Filters. You can select by scale, map series etc. and by holding down CTRL, multiple selections can be made.
The zoom level is shown lower left along with a distance scale that changes with zoom level. NB. Zooming in too far will make the map disappear; this is because they are all stored in a vast number of small tiles and very high zoom levels require a great deal of storage.
The British map reference and the WGS84 Latitude & Longitude coordinates suitable for use in a GPS are displayed for the point of the mouse cursor, this updates continuously.
Use the Fader or Opacity Slider top right to expose the modern basemap below the current Great War map. Change the base map using the layers icon top left.
Right Click to display a list of shortcuts.
Operations available in the main menu.
To close the main Menu, click the menu button again.
|
|
Find:- More here
- Great War locations such a trench names
- Points by trench map reference
- Maps covering a particular place
- Look in the full map catalogue
- Modern places
- Specific map ID
- By Latitude and longitude coordinates
- Great War era Bonne XY coordinates
Find trench map reference
Type the full or partial British Map Reference and click Convert. The reference must start with a sheet number as the map reference system works sheet by sheet.
A reference like 28.K.8.c.2.9 is a full reference but partial references like 28.K.8.c will work as will 28.K.8 and 28.K or even just 28. In these cases, TrrenchMapper will jump to the centre of the square referred to.
It is important to include dots between items. Some War Diaries or other reports show map references separated with spaces. This will not work in TrenchMapper as it conforms to the standard described on the original maps. Also do not try to use fractions.
Measure the battlefield:- More here
Use the Distance and Bearing icon top left to create lines
on the map. Distances are in yards to match the units used in the Great War,
bearings are clockwise from North in degrees. Double click to stop plotting
points.
These lines are temporary and will be removed when the Distance and Bearing
icon is deselected.
An elevation profile can be drawn showing height above current sea level.
Annotate the map:- More here
Click Menu top left and select Annotate Map.
- Draw lines and points
- Show the names of marked trenches
Right click and choose Add Marker Here to display a marker.
Display options
Click Menu then Map Centre then choose an option
- Show overlays. Shows a list of maps at the current location with clickable links to open them.
- Filter overlays. Choose map scale and type with clickable links to open them. Includes Body Density maps and those used by General Sir Douglas Haig.
- Nearby locations. Displays clickable list of Great War locations nearby
- Refresh overlays. Same as clicking the Refresh button, updates the list of maps relevant tp the curremt location.
- Show modern address. Show the modern address of the point at the map centre
- Show Latitude and Longitude. Shows the WGS84 coordinates of the map centre and its British Map Reference in a purple banner at the top of the screen.
- Elevation at centre. The height above sea level in feet.
- Street View. View how the nearest road location looks now.
On the left of the map, click the Layers icon and choose the basemap that lies below the Great War map or to select the type of Great War feature to display.
Overlay your own map:- More here
To show a georeferenced map not already in the TrenchMapper catalogue.
Street View:- More here
A view of the nearest point.
Help Version 2 1.0