- Elevation: Minimum and Maximum: These values represent the real world coordinates at the base and top edges of the 3D view.
- Easting: Minimum and Maximum: These values represent the real world coordinates at the western and eastern edges of the 3D view.
- Northing: Minimum and Maximum: These values represent the real world coordinates at the southern and northern edges of the 3D view.
- Vertical Exaggeration: This represents the amount of stretch along the elevation (Z) axis. A value of "1" indicates no stretch: the data items should be displayed with true elevations in relation to the X and Y axes. At a value of "2" the data items will appear twice as tall as they really are. At an exaggeration of "0.5" the data items will appear half as tall as they really are. The default will be the last item entered in this prompt, or the exaggeration applied by the Stretch button or the Stretch Fit button in this dialog if they were used. Vertical Exaggeration is saved in the Rw3D file.
Note that you can also use these buttons in the main toolbar for a quick stretch:
Stretch button
No Stretching button
- Center: X, Y, and Z: These values represent the real world coordinate at the junction of the X, Y, and Z axes in the 3D view.
- Stretch Fit: This button has the same effect as the Stretch button on the main RockPlot3D toolbar.
- Reset Defaults: This button restores the original view dimensions, based on the current data items. Click the Apply button to apply the changes.
! This simply identifies the coordinate system and units. If you need to change them (e.g. reproject), use the Utilities | Convert Coordinates menu option.
Why bother? Assigning coordinate units and projection to a spatial diagram such as a map or a cross-section or profile will enable you to export the diagram to Google Earth or other GIS applications.
- Undefined: Choose this option if you don't know/don't care what the coordinate system is.
- UTM: Choose this if your scene's X and Y coordinates represent a UTM (Universal Transverse Mercator) projection.
- Datum: Click on this button to view the available datums. The two most common projections for the U.S. are:
- Clark 1866 (NAD-27): Used within most USGS maps. NAD-27 coordinates may be as much as 200 meters from WGS-84 (NAD-83) datum of the exact same coordinate.
- WGS-84 (NAD-83): Used by GPS (Global Positioning System) units and more recent USGS maps.
- Zone: Click on this button to display an interactive map where you can click on the UTM Zone for the data.
- Feet, Meters: Select the units for the UTM coordinates from this drop-down list.
- Datum: Click on this button to view the available datums. The two most common projections for the U.S. are:
- State Plane: Choose this option if your scene's X and Y coordinates represent a U.S. State Plane coordinate system.
- Zone: The State Plane systems are zone-specific, so you need to define the zone to which the coordinates apply. Click on the Zone button to see a reference map; choose the zone from the scrolling list to the right of the map.
- Feet, Meters: Select the units for the State Plane coordinates from this drop-down list.
- Local: Choose this option if your scene's X and Y coordinates represent a local coordinate system, measured in feet or meters on a local grid.
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- You can geo-reference your local coordinate system by entering the longitude and latitude coordinates in decimal degrees that exist at the local coordinate "origin" of 0,0. If you don't know these global reference coordinates, you can leave the Local Origin set to a Longitude of 0.00000 and a Latitude of 0.00000.
- Feet, Meters: Select the units for the Local coordinates from this drop-down list.
