# # las2txtPro.py # # (c) 2013, martin isenburg - http://rapidlasso.com # rapidlasso GmbH - fast tools to catch reality # # uses las2txt.exe to covert LiDAR points to a simple ASCII TXT # # LiDAR input: LAS/LAZ/BIN/TXT/SHP/BIL/ASC/DTM # vector output: SHP/OBJ/TXT # # 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 las2txt production ...") ### 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 las2txt executable las2txt_path = lastools_path+"\\las2txt.exe" ### check if executable exists if os.path.exists(lastools_path) == False: gp.AddMessage("Cannot find las2txt.exe at " + las2txt_path) sys.exit(1) else: gp.AddMessage("Found " + las2txt_path + " ...") ### create the command string for las2txt.exe command = ['"'+las2txt_path+'"'] ### maybe use '-verbose' option if sys.argv[argc-1] == "true": command.append("-v") ### counting up the arguments c = 1 ### add input LiDAR wildcards = sys.argv[c+1].split() for wildcard in wildcards: command.append("-i") command.append('"' + sys.argv[c] + "\\" + wildcard + '"') c = c + 2 ### create parse string parse = sys.argv[c] if sys.argv[c+1] == "true": parse = parse + "a" if sys.argv[c+2] == "true": parse = parse + "u" if sys.argv[c+3] == "true": parse = parse + "p" if sys.argv[c+4] == "true": parse = parse + "RGB" if sys.argv[c+5] != "#": parse = parse + "E" ### add parse string if parse != "xyz": command.append("-parse") command.append(parse) ### maybe add the extra string if sys.argv[c+5] != "#": command.append("-extra") command.append(sys.argv[c+5]) c = c + 6 ### maybe a user-defined separator if sys.argv[c] != "space": command.append("-sep") command.append(sys.argv[c]) c = c + 1 ### maybe an output directory was selected if sys.argv[c] != "#": command.append("-odir") command.append('"'+sys.argv[c]+'"') c = c + 1 ### maybe an output appendix was selected if sys.argv[c] != "#": command.append("-odix") command.append('"'+sys.argv[c]+'"') c = c + 1 ### maybe we should run on multiple cores if sys.argv[c] != "1": command.append("-cores") command.append(sys.argv[c]) c = c + 1 ### maybe there are additional input options if sys.argv[c] != "#": additional_options = sys.argv[c].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 las2txt gp.AddMessage(str(output)) ### check return code if returncode != 0: gp.AddMessage("Error. las2txt failed.") sys.exit(1) ### report happy end gp.AddMessage("Success. las2txt done.")