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Beyond the Basics of TMView | Using
TMJava
6.0 Using TMJava - General Information
TMJava incorporates many of the functions of TMWin. Figure
1 illustrates the ease of accessing web resources linked to
a map. To view web resources, (1) activate the select arrow
(see Map Toolbar) and click on a feature
of the map or draw a bounding box the encompasses a selected
area of the map. As in the example, (2) a grey screen will appear
that shows the map layers that have information for the selection
made. The number of records for the layer will show in brackets.
Click one of the listed resources. If there is more than one
record for the layer, (3) a table of resources with associated
attribute data will appear. Choose a record and link to the
(4) web resource for the record.
Fig. 1 is from ECAI Iraq.
6.1 Map Toolbar
The map toolbar includes a variety of tools for navigating
a dynamic map. Some of the tools might be familiar (zoom and
select features), while some are unique features of TimeMap
maps (animation). The diagram below identifies the toolbar map
viewing tools.
Use the magnifying glasses to zoom in(+) and zoom
out (-), or the crossed bi-directional arrows to move around
the map, or pan, in any direction. Use the single arrow
to select map features, either by clicking on a single
point or by drawing a bounding box around a number of features,
and view attribute information and web resources for the selected
feature(s). The copyright button shows information,
including intellectual property, about each layer of information
on the map. Select the label button to identify features
by name or another attribute value, and use the animation
button (see below) to create a dynamic view of the data as it
changes over time. Theme and extent selection display
views of the map based on a theme designed by the map's author.
To use the zoom to selected layer feature, first select
a layer from the legend and then click on the button. The map
view will change to include all the content of the selected
layer. The zoom to maximum extent feature will show
the maximum extent, or view, of the entire map, with all layers
selected. Use the search field to search for information
by map layer.
6.2 Animation
Use the animation button (see above) to create an automated
dynamic view of the map content as it changes over time. Map
content must be time-enabled in order to use this feature.
Try the example settings here on the map below. After changing
the settings, click on the right facing triangle and watch
the map change.
6.3 Map Legend
Use the functions of the map legend to turn
layers off and on, expand the legend for more cartographic information,
and tell when a map layer is out of spatial or temporal range.
6.4 Map Timebar
The ability to dyanically view map content based on time as
wells as place is an unique feature of TimeMap. When
the features on the map include time values as part of the attribute
data, geographic data with corresponding temporal data, the
display of those features change as the timebar is adjusted
to reflect different points or ranges of time.
Use the tool buttons on the timebar and slide the triangles
at the ends of the lower bar to set a time period for the map
display. The maximum time range depends on the start and end
time values for the data. The range can be limited to the smallest
unit of time for the data (year, month, day, hour) depending
on the nature of the temporal data.
Use this 2-step process to adjust the time range and zoom in on
the timebar
6.5 Sample Map
Experiment with the functionality of TMJava
in the dynamic map below from ECAI
Iraq: Eras and Empires - 1000CE to 1500CE.
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