Updated:
09 December 2003
SELECTING MAPS USING THE RASTER VIEWER
SEARCH BY INDEX MAP
The Index Map is an intuitive way to locate a particular map, allowing
you to simply browse to a region of Australia and load the corresponding
map.
When the Index Map is first activated the screen displays an image of
Australia with a grid detailing how it is broken up into map sheets. The
following image shows an example of this screen.
The index map can be zoomed and panned using the tools shown on the
top left side of the index map frame. The operation of the map viewer tools
is described in
Moving around a map.
To select a particular map, use the panning tool (hand) or zooming tool
(magnifying glass) to pan and zoom the map. (For help using
the map display tools, see Moving around a map).
Once you are satisfied that you can see the feature you're looking for, or the grid lines are clear enough to
place the mouse within the rectangle for the desired map, then select
the arrow tool and click the mouse in that region. At the bottom right
of the index map page, the name and number of the map corresponding to
the location selected is displayed.
The following image shows the display after clicking on Albany in Western Australia.
To view this map click the Load button.
In order to improve image clarity, the index map used in NATMAP Raster 2003 does not show 1:100,000 scale maps.
Why do the lines showing the 1:250,000 scale map boundaries disappear?
Depending upon the scale the Index Map is zoomed to, some of the map boundary lines may disappear. This is due to the
Viewer resampling the image in order to fit the area you've zoomed to onto your monitor. As the lines are only a few
pixels wide, sometimes they are not resampled. If you change your zoom scale slightly, the lines will reappear.
