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.
Surface import
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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.
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Color selection: select the color gradient for your surface
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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.
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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.