don6019

Convert .xyz elevation models to GeoTiff

In Germany, more and more state agencies allow free access to high resolution elevation models. However, these are often released as xyz tables, which are not easily used in GIS environments. A standard method to convert this format to raster formats (eg. GeoTiff) is the GDAL function gdal_translate [1, 2]. However, converting 1M lines takes dozens of seconds and is not trivial to parallize.

mpl2qgis

See script below.

Make sure the Python file is executable. Then:

$ ./mpl2qgis.py viridis bone

This writes a file colourmaps.xml. Result:

	'''
	Copyright (C) 2018 Andre Lester Kruger

	ConcaveHull.py is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.

	ConcaveHull.py is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of


	"""
	Interactive tool to draw mask on an image or image-like array.
	Adapted from matplotlib/examples/event_handling/poly_editor.py
	"""
	import numpy as np

	# import matplotlib as mpl
	# mpl.use('tkagg')
	import matplotlib.pyplot as plt