GeoMapApp© Help
Navigation Buttons
Pan Tool
Click on the map and drag any direction to move the view in the Main Map Window.
Zooming
- When
is selected, click in the map to zoom in 2X.
- When
is selected, click in the map to zoom out 2X. - When either is selected, drag a rectangle to zoom to the area selected.
- To cancel zooming, either deselect the zoom button, or click the "select" button
- In the map, when the Control key is held down, clicking zooms in 2X. If Control+Shift keys are held down, clicking zooms out 2X. Control+drag, zooms to the selected area. (These often work in other GeoMapApp windows that display graphics).
Scrolling
- Use the arrows at the end of the scroll bars to step the map a few pixels in the direction of the arrow.
- Use the scroll bars to move the map view horizontally or vertically
- When the zoom factor is >2X, a map inset appears in the map window, showing the location of the current map as a red rectangle. Drag the red rectangle to move the current map view. The inset may be shown/hidden using the View menu.
Location Information
The coordinates of the cursor location and current zoom factor are displayed to the right of the main tool bar. On startup, the zoom factor is 1X. For zoom factors of 16X and less, a new map is always available. At greater magnifications, the "Mask" function shows where higher resolution data are available up to a zoom factor of 512X (~100 m node spacing). Higher resolution grids may be loaded from your own data or from the gridded datasets in the Available Data menu.