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QGIS rendering with head-tail breaks

Custom rendering using Head-Tail breaks.

 

Head-tail breaks process

 

[a] create the next elevation break at the arithmetic mean elevation of all points

[b] discard points less than this elevation

[c] repeat from [a] until the range is too small to subdivide

[d] use successive elevation breaks in the colour scheme

 

As you can see, it tends to play down lower elevations, and is good for highlighting the highest peaks.

 

Used a short Python script to generate the elevation bands, using Python and GDAL. I manually tweaked the elevation bands in QGIS from the output of the script

 

Good description here

 

Read original paper by Jiang, B. (2012). Head/Tail Breaks: A New Classification Scheme for Data with a Heavy-Tailed Distribution. The Professional Geographer, XX, X, 1-13

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Uploaded on September 6, 2014
Taken on September 6, 2014