This zip file contains files used to make the Mount Beerwah surface.

- beerwah.asc is the export from Geoscience Australia's ELVIS tool, and
  can be displayed as a raster layer in QGIS.

- beerwah_metadata.html is the accompanying metadata.

- beerwah.csv is beerwah.asc tidied up and almost ready for copy-
  pasting into the JavaScript.  Not shown is a transpose-copy-paste and
  then reversing the row order.

- /image_proc contains the screenshots from Google Maps etc.

- beerwah.png is the main screenshot to read colours from.

- beerwah_corner*.png and beerwah_mid*.png contain clicked locations
  where Google shows the latitude and longitude.

- control_points.csv tabulates these co-ordinates along with the pixel
  co-ordinates.  Since beerwah.asc is on a UTM co-ordinate grid, the
  control_points.csv file also contains the UTM easting and northing
  for each point.  I used http://www.latlong.net/lat-long-utm.html for
  this.  The resulting regressions are typed in.

- grid_colors.R works its way through the grid nodes, and interpolates
  colours from beerwah.png, using the regressions calculated in the
  previous step to go from UTM co-ordinates to pixel locations in the
  Google Maps screenshot.  It outputs a JavaScript array to colors.txt,
  ready for copy-pasting after the line
     params.data.color = [

