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Mount Beerwah

Mount Beerwah is the tallest of the Glass House Mountains in South East Queensland, the highest point being 556 metres above sea level. Using elevation data from Geoscience Australia's 5-metre DEM and a screenshot from Google Maps, I've represented the mountain as a surface below.

Manipulating the plot will often cause Chrome on my Galaxy S3 to crash – there are about 200,000 triangles in the surface (256 × 203 grid nodes), and perhaps that's too many. Please let me know (email dw.barry@gmail.com or tweet @pappubahry) if you get a crash on a different device. Still it looks great on my laptop.

The x- and y-axes are UTM easting and northing; click/tap somewhere on the surface to see the co-ordinates below the plot. The highest point in the data is at 550.4 metres.

Fun exercise: If you rotate the mountain so that it's upside-down and appears a crater, then you might be able to still see it as a hill, and make a hollow face illusion as you make small rotations.

Mouse controls: Left-click and drag to rotate; alt (Mac)- or ctrl (Windows)-click-drag or middle-click-drag to pan; scroll or shift-click-drag to zoom. Touch screen controls: one finger to rotate; two-finger scroll to pan; pinch to zoom. Click/tap on the cube icons to snap to a side-on view.

Imagery ©2016 Google.

Clicked point: x =  ; y =  ; z =  .

You can see how the plot is constructed in the HTML source:

Posted 2016-12-22.


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