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Help:
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Zoom
In |
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Select
this button to zoom in to a selected area. Select the button, click and
drag a zoom box on the map area. The application will then automatically
redisplay the map zoomed into the selected extents. |
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Zoom
Out |
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Select
this button to zoom out to a selected area. Select the button and click
on a point on the map area. The map will redisplay zoomed out around the
selected point. Note that the 'click and drag' feature is not available
for zooming out. |
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Zoom
to Map Extent |
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Select
this button zoom out to the full extents of the map. Click the button and
the map will redisplay zoomed out to the full extents of the map. |
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Pan |
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Select
this button to pan around the map. Select the button, click on a point on
the map and the map will redisplay centered around the point selected. |
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Query
Item |
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Select
this button to query one or more items in the map view. Select the button,
click on a feature or click and drag a rectangle to select multiple items.
A new window will display showing the results of the selected query and
a map showing the selected polygon(s). |
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| Redraw
Map
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Select
this button to refresh the map. This is used after the selecting or de-selecting
layers to display. |
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View
Map |
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Select
this button to display a map and legend in a new window. This may be useful
for printing purposes. |
Note:
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Some
layers have been built with a scale threshold which dictates at what
display scale the data will become visible. Due to a bug in MapServer
there is an intermittent problem that can occur when zooming into
areas while layers that have a scale threshold set are switched on.
This should be rectified in the near future, but in the meantime an
effective workaround is to switch off and scale threshold layers,
zoom into the area of interest and then turn the layers on. This should
then display without any problem.
The only layers currently set up using a scale threshold is the 'Population
(1996)' and 'Towns' layer. This is why if you are outside
of the scale threshold it is possible to have the layer switched on
but not have it visible on the map.
- The
layers displayed on the map are not transparent. Be aware when displaying
multiple layers that it is possible to overlay one layer on top of another
such that data becomes hidden under the top layer.
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