| Introducing JViews Maps > Basic Concepts > Map Preparation > Grids, Units, and Measures |
Grids, Units, and Measures |
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JViews Maps allows you to overlay grid systems and set your preferred units and measures.
Predefined grids are provided for:
The grids are called adaptable grids because they adapt to the zoom level to ensure that there is always something meaningful on the screen.
There is no impact on memory and little on performance. JViews Maps uses optimized parameters including, for example, delayed drawings. In this case, a simplified grid is displayed during zooming and panning, with only the 20 lines needed drawn on the view. When the view stops moving, it displays the more refined grid and labels.
JViews Maps supports different units, including:
You can extend the supported units for linear and angular measurements.
Different measuring units can be used for distances and altitudes.
Working units can de changed dynamically, with conversion computed by a set of provided components.
JViews Maps provides off-the-shelf components and end-user interactors for orthodromy measurements of distance and bearing.
Distances can be measured in the supported units and changed dynamically.
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