# # lascontrol.py # # # (c) 2013, martin isenburg - http://rapidlasso.com # rapidlasso GmbH - fast tools to catch reality # # uses lascontrol.exe to verify a folder of LiDAR # files against a set of ground control points # # LiDAR input: LAS/LAZ/BIN/TXT/SHP/BIL/ASC/DTM # control point: CSV/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 lascontrol ...") ### 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 lascontrol executable lascontrol_path = lastools_path+"\\lascontrol.exe" ### check if executable exists if os.path.exists(lastools_path) == False: gp.AddMessage("Cannot find lascontrol.exe at " + lascontrol_path) sys.exit(1) else: gp.AddMessage("Found " + lascontrol_path + " ...") ### create the command string for lascontrol.exe command = ['"'+lascontrol_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]+'"') ### add input control points command.append("-cp") command.append('"'+sys.argv[2]+'"') ### maybe add the control point parse string if sys.argv[3] != "xyz": command.append("-parse") command.append(sys.argv[3]) ### maybe skip a few points in the control file if sys.argv[4] != "0": command.append("-skip") command.append(sys.argv[4]) ### maybe use horizontal feet if sys.argv[5] == "true": command.append("-feet") command.append(sys.argv[4]) ### which points to consider if sys.argv[6] == "only ground points": command.append("-keep_class") command.append("2") elif sys.argv[6] == "ground and keypoints": command.append("-keep_class") command.append("2") command.append("8") elif sys.argv[6] == "ground and buildings": command.append("-keep_class") command.append("2") command.append("6") ### maybe an output file name was selected if sys.argv[7] != "#": command.append("-cp_out") command.append('"'+sys.argv[7]+'"') ### maybe there are additional command-line options if sys.argv[8] != "#": additional_options = sys.argv[8].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 lascontrol gp.AddMessage(str(output)) ### check return code if returncode != 0: gp.AddMessage("Error. lascontrol failed.") sys.exit(1) ### report happy end gp.AddMessage("Success. lascontrol done.")