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.
Currently, the following formats are supported:
.zmap
.xyz (only when gridded)
.tiff (geotiff) [coming soon]
There are currently some limitations to these files:
Files can be no larger than 100mb.
The CRS of the file has to use ED50 as its datum. (lat-long is not supported)
Using the surface settings it is possible to customize the surface.
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.
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.