Page Comparison

Import coastline

1. Right-click the Cultural Data folder and select Import > Generic
2. Click the browse button and select the gshhs_f.b file from ...\inbox\01coastline
3. Tick the Specify import area box and click the Area of Interest tab.
4. Enter the following range:
5. Click Execute
6. When prompted with the Select Datum and Coordinate system dialog, select:
7. Click OK

Convert coastline to UTM 51S

1. Right click the GSHHS coastline and select All commands > Shared commands > Operations > Convert to UTM... or alternatively find the command in the Toolbox
2. Set the datum to World Geodetic System 1984 and the coordinate system to UTM zone 51 and hemisphere S.
3. Use the Replace input option (the original geodetic coastline is lost after the conversion).
4. Click Execute

Import fields and licenses

1. If these data are not present in the training dataset create them artificially by digitizing them with Tools -> Quick Digitizing. Create the folders as described below and place the fields and licenses correctly.

1. Right-click the Cultural Data folder and select Import > Generic
2. Click the browse button and select the fields.shp file from \inbox\01CulturalData\fields
3. Click Execute
4. Click the browse button again and select the Licenses.kml file from \inbox\01CulturalData\licenses
5. Click Execute

Import etopo1 relief grid

1. Create a new folder called Relief Grid
2. Right-click the Relief Grid folder and select Import > Generic.
3. Click the browse button and select the etopo1_aus.g98 file from \inbox\02etopo1.
4. You don't need to use Specify import area because the dataset is already cropped correctly.
5. Click the Reader Options tab and tick the Invert Z box because the grid has negative values for sea depths, and positive values for heights above sea level. Usually bathymetry data has positive values for depths.
6. Click Execute

Set grids schema to Seabed Surface

1. Right-click the etopo1_aus grid and select Set Schema > Seabed Surface

Try out different ways to display the seabed

Display

1. Right-click etopo1_aus and select Display. The grid should now be displayed in one solid color.
2. Click the icon to clear the graphics.

Map Data

1. Right-click etopo1_aus and select Map Data. The grid has now been mapped on the full data range from -2974 (red) to 7238 (blue).
2. Click the icon to clear the graphics.

The two previous methods does not distinguish between land and sea in a good way. Thus we are going to map land and sea in two different shades of color.

Map Land

1. Right-click etopo1_aus and select Map Land. This maps everything above sea level in a shade from green to brown.
2. Right-click etopo1_aus and select Map Sea. This maps everything below sea level in a blue shade.
3. Click the icon to clear the graphics.

None of the previous methods will display the grid in full resolution as Geocap automatically decimates large datasets to make the display quicker. This is why we also have a LOD (level of detail) display command which adjust the resolution based on your zoom level.

LOD Grid Display

1. Click etopo1_aus and double click the LOD Grid Display...* command in the Visualization folder under Shared commands in the Toolbox
2. Demonstrate the effect of LOD by pressing W (wire mode) on your keyboard and zoom in an out. Notice that the squares get smaller as you zoom closer.
3. Press S on your keyboard to go back to solid mode.

Display cultural data

1. Right-click GSHHS and select Display.
2. Right-click fields and select Display.
3. Right-click Licenses and select Display