Surface import and settings

The surface import modal is the tool to import surfaces to the 2D map view of Glex. The surface is converted to a flat representation of the actual surface and includes hill-shading, contour lines and color gradient choices.

Surface import

When importing surfaces there are some additional thing to keep in mind.

You have to fill the depth units and the UTM zone of the file, you can also select WGS84 as a datum, but this is only supported for geotiff files. Otherwise the import works the same as for prospects, see How to Import Prospect and Lead Shapefiles.

File restrictions

Supported formats:

.tif: has to be a geotiff
.xyz: only when gridded
.zmap

Supported CRS:

ED50
WGS84: for .tif files only

Supported file size:

.tif: up to 250 mb.
.xyz: up to 700 mb
.zmap: no size limitation.

Surface settings

Surface settings let you customize the visualization of your surface.

Surface settings can be accessed from the info window or the inspector window.

Color selection: select the color gradient for your surface

Select the color interval: select a continuous or step gradient of colors

Set the depth range: set the depth range you wish to visualize using the color gradient

Hill shading: select the orientation and intensity of the hill shading effect

Strength: Determines how strong the shadows are.
Direction: Determines the cardinal direction of the light.
- 0° is light from the North, moving clockwise
Altitude: Determines how far above the light is projected from.

Contours: select the interval of the contour lines. There may be upper and lower limits based on the depth range.

The color legend widget shows the legend of one of the surfaces, the dropdown menu at the top can be used to select which one.