# # lasduplicate.py # # (c) 2013, martin isenburg - http://rapidlasso.com # rapidlasso GmbH - fast tools to catch reality # # uses lasduplicate.exe to remove all duplicate points from a # LiDAR file. By default the first point of those with identical # x and y coordinates survives. It is also possible to keep the # lowest of all xy-duplicates or to only remove xyz-duplicates. # # LiDAR input: LAS/LAZ/BIN/TXT/SHP/BIL/ASC/DTM # LiDAR output: LAS/LAZ/BIN/TXT format # # for licensing see http://lastools.org/LICENSE.txt # import sys, os, arcgisscripting, subprocess def check_output(command,console): if console == True: process = subprocess.Popen(command) else: process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True) output,error = process.communicate() returncode = process.poll() return returncode,output ### create the geoprocessor object gp = arcgisscripting.create(9.3) ### report that something is happening gp.AddMessage("Starting lasduplicate ...") ### get number of arguments argc = len(sys.argv) ### report arguments (for debug) #gp.AddMessage("Arguments:") #for i in range(0, argc): # gp.AddMessage("[" + str(i) + "]" + sys.argv[i]) ### get the path to LAStools lastools_path = os.path.dirname(os.path.dirname(os.path.dirname(sys.argv[0]))) ### make sure the path does not contain spaces if lastools_path.count(" ") > 0: gp.AddMessage("Error. Path to .\\lastools installation contains spaces.") gp.AddMessage("This does not work: " + lastools_path) gp.AddMessage("This would work: C:\\software\\lastools") sys.exit(1) ### complete the path to where the LAStools executables are lastools_path = lastools_path + "\\bin" ### check if path exists if os.path.exists(lastools_path) == False: gp.AddMessage("Cannot find .\\lastools\\bin at " + lastools_path) sys.exit(1) else: gp.AddMessage("Found " + lastools_path + " ...") ### create the full path to the lasduplicate executable lasduplicate_path = lastools_path+"\\lasduplicate.exe" ### check if executable exists if os.path.exists(lastools_path) == False: gp.AddMessage("Cannot find lasduplicate.exe at " + lasduplicate_path) sys.exit(1) else: gp.AddMessage("Found " + lasduplicate_path + " ...") ### create the command string for lasduplicate.exe command = ['"'+lasduplicate_path+'"'] ### maybe use '-verbose' option if sys.argv[argc-1] == "true": command.append("-v") ### add input LiDAR command.append("-i") command.append('"'+sys.argv[1]+'"') ### maybe a user-specified grid size if sys.argv[2] == "lowest_z": command.append("-lowest_z") elif sys.argv[2] == "unique_xyz": command.append("-unique_xyz") ### maybe an output format was selected if sys.argv[3] != "#": if sys.argv[3] == "las": command.append("-olas") elif sys.argv[3] == "laz": command.append("-olaz") elif sys.argv[3] == "bin": command.append("-obin") elif sys.argv[3] == "xyz": command.append("-otxt") elif sys.argv[3] == "xyzi": command.append("-otxt") command.append("-oparse") command.append("xyzi") elif sys.argv[3] == "txyzi": command.append("-otxt") command.append("-oparse") command.append("txyzi") ### maybe an output file name was selected if sys.argv[4] != "#": command.append("-o") command.append('"'+sys.argv[4]+'"') ### maybe an output directory was selected if sys.argv[5] != "#": command.append("-odir") command.append('"'+sys.argv[5]+'"') ### maybe an output appendix was selected if sys.argv[6] != "#": command.append("-odix") command.append('"'+sys.argv[6]+'"') ### maybe there are additional command-line options if sys.argv[7] != "#": additional_options = sys.argv[7].split() for option in additional_options: command.append(option) ### report command string gp.AddMessage("LAStools command line:") command_length = len(command) command_string = str(command[0]) command[0] = command[0].strip('"') for i in range(1, command_length): command_string = command_string + " " + str(command[i]) command[i] = command[i].strip('"') gp.AddMessage(command_string) ### run command returncode,output = check_output(command, False) ### report output of lasduplicate gp.AddMessage(str(output)) ### check return code if returncode != 0: gp.AddMessage("Error. lasduplicate failed.") sys.exit(1) ### report happy end gp.AddMessage("Success. lasduplicate done.")