Grid Viewer Toolbar

The Grid Viewer toolbar provides you with easy-access tools for working with Geosoft grids within the Grid Viewer window. The toolbar becomes active and is displayed within the window when you open any grid.

A grid view cannot accept any graphics that a map can; it can be saved as a map (the Open in New Map button on the Grid Viewer toolbar), in which case the map will appear in the Maps section of the Project Explorer.

	Shadow Cursor (Default Shortcut: Alt+C) Click this button to enable desktop dynamic linking. As you move the shadow cursor ( $image\shadowcursor2.jpg$ ) around the grid view, the same geographic location () is indicated in all the other open and linked maps and grid views; in addition, in open databases the closest point in the currently visible line/group is highlighted. Similarly, when you select a value in the database or a point on a profile, the Shadow cursor position will update in the linked map and grid views. When you open a grid, the system automatically turns on a grid view link and activates the Shadow cursor.
	Pan (Default Shortcut: P-Key or Spacebar) Click this button to move around in the currently selected grid. Click the left mouse button, and while holding the button down, move the hand cursor to pan around the current grid area. You can also access this command by clicking the right mouse button on the view and selecting Pan under Navigation Tools from the context menu.
	Zoom to Box (Default Shortcut: B-Key) Click this button to activate the Zoom to Box option, then click on the view, and while holding down the left mouse button, move your cursor to box in the area you want to zoom. It is also possible to reduce the number of clicks needed by doing the above in one movement by clicking, holding the button, and dragging the rectangle immediately. Once the box has been defined, the cursor and the box are linked, and by moving the cursor around, you can move the box to another location and then click the left mouse button to zoom to the boxed area. You can also access this command by clicking the right mouse button on the view and selecting Zoom to Box under Navigation Tools from the context menu.
	Zoom In/Out (Default Shortcuts: Z-Key [In] and X-Key [Out]) Click this button to zoom in by dragging to the right, or zoom out by dragging to the left. You can also access this command by right‑clicking in the view and selecting Zoom In/Out from the Navigation Tools menu. For details on how the mouse wheel behaves when zooming, see the Application Notes below.
	Zoom to Full Extents (Default Shortcut: F-Key) Click this button to display the whole grid area in the grid window. You can also access this command by clicking the right mouse button on the view and selecting Zoom to Full Extents under Navigation Tools from the context menu.
	Previous Extent (Default Shortcut: L-Key) Click this button to undo navigation changes that you have made recently. This command is useful for returning the view to any extents that were previously viewed after changing it by zooming and panning. You can also access this command by clicking the right mouse button on the view and selecting Previous Extent under Navigation Tools from the context menu.
	Next Extent (Default Shortcut: O-Key) Click this button to redo navigation changes that you have made recently. You can also access this command by clicking the right mouse button on the view and selecting Next Extent under Navigation Tools from the context menu.
	Change Extent on This Map Only Click this button to apply navigation commands to the currently selected grid window only.
	Change Extent on All Maps Click this button to apply navigation commands to all open grid and map windows in the project.
	Change Extent on Other Maps Only Click this button to apply navigation commands to all grid and map windows other than the currently selected grid.
	Pan to Cursor on All Maps Click this button to enable the other open grid views and maps to automatically pan to keep the cursor visible. Every time a location is selected on a grid view (or map) using either Shadow Cursor or Data Linking, the Shadow cursor location on the other grid views (or maps) is updated. When this option is enabled, if the Shadow cursor moves out of view, the grid view (or map) will automatically pan to centre on the new cursor location, always keeping the cursor in view.
	Auto Recolour Grid Click this button to toggle the "auto recolour grid" option on or off. This option recolours the displayed grid area as the grid extents change within a grid window (e.g., when zooming or panning): When this option is "on", the grid values stay the same. However, any changes made to the extents of the viewed grid area will cause the grid to be recalculated and recoloured based on the grid values in the currently displayed area, using the entire colour palette over the displayed grid area. When the option is "off", the grid returns to its original colours. The Auto Recolour Grid option is a temporary viewing tool. To save/share a recoloured view of a grid, you can create a snapshot.
	Colour Tool Click this button to activate the Colour Tool. The tool enables you to interactively edit the colour display of the grid, store your custom colour configurations in specialized colour scheme files (.ITR, .AGG, .ZON, .TBL, *.LUT), and apply a colour scheme file to the displayed grid. This button is disabled for image grids, as they are not supported by the Colour Tool.
	Smoothing Click this button to toggle the "smoothing" option on or off: By default, this option is activated when a grid is opened in the Grid Viewer: for display purposes, the grid is first interpolated to a smooth image at the screen resolution. Turn off the option if you prefer to honour the grid resolution; the image will appear pixelated, and the colour will change at the actual grid interval value rather than the screen resolution. This button is disabled for image grids.
	Shading Adding a shading effect to the colour grid emphasizes the subtle changes in the data that would otherwise be subdued. Click this button to toggle the "shading" option on/off: When this option is activated, a shadow grid image is created. By default, the shading parameters are set to the following values: illumination (sun angle) inclination/declination = 45°, RGB colour model, default vertical scale factor (calculated as 2.5 over the mean of the gradient of the input grid). To change the default shading parameters, click on the Interactive Shading button on the Grid Viewer toolbar. Check the Shading note for the shadow grid calculation equation. When the option is turned off, the grid returns to its original state.
	Interactive Shading If the Shading option is active, this button becomes enabled. Click this button to activate the Interactive Shading tool and proceed to change the sun angle in real time.
	Open in New Map Click this button to save changes to the grid and open it in a map window.

Application Notes

Additional Context Menus in the Grid Window

Right-clicking in the view reveals additional commands:

Grid Value – Displays the grid value at the cursor location.
Measure Distance – Measures the distance between points on the view.
Measure Angle – Measures angles on the view.

Mouse Wheel Zoom Behaviour

By default, Oasis montaj zooms relative to the cursor position. When you roll the mouse wheel, the view zooms in or out around the point beneath the cursor, rather than around the window centre.

This behaviour makes it faster and more intuitive to:

Zoom into features that are not centred in the current view
Keep the cursor over a specific area while zooming
Quickly focus on a particular feature without first panning

You can customise both the zoom centre (cursor position or window centre) and the zoom direction using the Mouse Wheel Zoom Mode and Mouse Wheel Zoom Direction options under Map Settings in Advanced Settings.

For detailed instructions on modifying these options, see Advanced Settings.

These settings apply at the Oasis montaj system level (not per project) and affect all projects and any new workspaces you create.

Shortcut Keys

Oasis montaj provides configurable shortcut keys ('hotkeys') that enable quick and easy access to menu functions.

To view or modify these settings, go to Map > Settings and select Configure Map Shortcut Keys. The interactive dialog allows you to configure your own shortcut keys (hotkeys) or view the default settings.