Python script for rendering ASCII Grid format terrain data to a height map.

asciiheight.py

import argparse
 
parser = argparse.ArgumentParser(description='Python script for rendering ASCII Grid format terrain data to a height map.')
 
parser.add_argument('path-to-ascii-file', metavar='<path-to-ascii-file>', type=str,
                   help='path to the ASCII Grid format file')
parser.add_argument('output-path', metavar='<output-path>', type=str,
                   help='file path to write the output PNG to')
 
args = vars(parser.parse_args())
 
inputPath = args['path-to-ascii-file']
outputPath = args['output-path']
 
inputFile = open(inputPath, "r")
 
lines = inputFile.readlines()
if lines:
	numColumns = lines[0].split(" ")[1]
	numRows = lines[1].split(" ")[1]
	longLatLocX = lines[2].split(" ")[1]
	longLatLocY = lines[3].split(" ")[1]
	resolution = lines[4].split(" ")[1]
	for n in range(5, len(lines)):
		elements = lines[n].split(" ")
		for x in range(0, len(elements)):
			value = elements[x]
			lowestValue = min(value, lowestValue)
			highestValue = max(value, highestValue)
else:
	print("Could not read from file " + inputPath)
 
inputFile.close()