Map Viewer On-line Help

The Zoom In tool is used to zoom in on a specific point on the map. To use the tool, select the zoom in icon from the tool bar, then click, or drag a box on the map. To draw the zoom-in box, click the left mouse button, and, while holding it down, drag the cursor to the other corner of the area you want to magnify, releasing the button. The specified area will be enlarged. If you click the map, the point on which you click becomes the center of magnification, and, subsequently, the center of the new map.

The Zoom Out is used to zoom out from the map to view a larger area. To use the tool, select the zoom out icon from the map tool panel, then click, or drag a box on the map. To draw the zoom-out box, click the left mouse button, and, while holding it down, drag the cursor to the other corner of the area you want to reduce, releasing the button. The specified area will be reduced and a larger area of the map is displayed. As a rule, the smaller the box, the larger the area displayed. If you click the map, the point on which you click becomes the center of magnification, and, subsequently, the center of the new map.

Panning is a useful function that allows you to move around the map without changing the scale. Think of it as shifting a paper map across a desktop in order to view a different portion of it. To use the pan tool, select the pan icon from the tool bar, then click and hold down the left mouse button. Drag the map in the direction you want to pan, releasing the mouse button when you are done.

The Zoom Last button allows you to quickly zoom back to the last map view. Simply click the Zoom Last button once to zoom back to your previous map view.

The Full Extent tool allows you to quickly zoom out to the map's maximum extent (full view). To use the full extent function, simply click on the full extent icon. The full map area will be displayed in the map panel.

The Get Info tool allows you to retrieve attribute information from features on the map. Using this tool is a two-step process: first you must make a map layer "active" for the Get Info tool, then, on the map, either drag a box around, or click on the feature(s) you are interested in. The Map Viewer will then retrieve the data for the feature(s) and display the results in a new browser window.

Layers that are available for the Get Info tool are indicated in the Layer List with the icon. To "activate" a layer click on this icon. When a layer is active it is indicated with the icon. At certain map scales you will see the icon next to some layers. This icon indicates that the layer is not visible at the current map scale, and cannot be activated for the Get Info tool until it is back within scale-range.

The Measure tool allows you to measure distances on the map. It is a simple, two-click operation - click once on the map where you want to start your measurement, then click a second time to complete the measurement. The map will be refreshed and will return with your measurement segment displayed and the length of the segment. To measure multiple segments repeat this process - each segment you draw will be added to your total distance measured. To clear your measurements click on the

button in the toolbar.

The Select Features tool allows you to select features from the "active" layer (see the Get Info tool for more information about making a layer "active") to create a selected set. To make a selection, click on the Select Features icon, then click on, or drag a rectangle around features you wish to select for your selected set. Once you have features selected you can:

Retrieve information about the selected features
Use the selected set to find adjacent features from other layers (see the section on the Select Tab for further details)
Add additional features to your selected set, or remove some

The map scale display beneath the main map shows you the current map scale and allows you to zoom the map in/out by entering in a map scale value (e.g., 100, 200, 1100, 24,000, 100,000). Click on the "Go" button or just hit your "enter" key to zoom the map to the new scale.