A script that converts geotifs into mbtiles

geotiff2tiles.rb

#!/usr/bin/env ruby
require 'optparse'

def run_cmd(text,command)
  start_time = Time.now
  puts "-- Starting #{text} at #{start_time.strftime '%I:%M:%S %b %d, %Y'}"

  result = system command

  end_time = Time.now
  duration = "%0.2d" % ((end_time - start_time)/60)
  puts "-- Finished #{text} at #{end_time.strftime '%I:%M:%S %b %d, %Y'} (took #{duration} minutes)"

  result
end

options = {}
options[:out] = "tiles"
OptionParser.new do |opts|
  opts.banner = "Usage: create_mbtiles.rb [options] GEOTIFS"

  opts.on("--out [DIR]", String, "Tile Output Folder") do |out|
    options[:out] = out
  end
end.parse!

if ARGV.count == 1
  begin_time = Time.now
  puts "---- Creating mbtiles from geotiffs at #{begin_time.strftime '%I:%M:%S %b %d, %Y'}"

  worked = system "mkdir tmp"
  worked = system "ls -1 #{ARGV[0]} > tmp/files.txt" if worked

  worked = run_cmd 'Build VRT', "gdalbuildvrt -input_file_list tmp/files.txt tmp/files.vrt" if worked

  worked = run_cmd 'Gdal Warp to Mercator', "gdalwarp -t_srs EPSG:3857 -of VRT tmp/files.vrt tmp/mercator.vrt" if worked

  run_cmd 'Convert to MBTiles', "gdal2tiles.py -w openlayers -s EPSG:3857 tmp/mercator.vrt -t 'Sanborn Map Company' #{options[:out]}" if worked

  run_cmd 'Cleanup', "rm -fr tmp" if worked

  finish_time = Time.now
  total_time = "%0.2d" % ((finish_time - begin_time)/60)
  puts "---- Finished creating mbtiles from geotiffs at #{finish_time.strftime '%I:%M:%S %b %d, %Y'} (took #{total_time} minutes}"
else
  puts "Usage: create_mbtiles.rb [options] GEOTIFS"
end