# # lasmerge.py # # (c) 2013, martin isenburg - http://rapidlasso.com # rapidlasso GmbH - fast tools to catch reality # # uses lasmerge.exe to merge LiDAR files into one # # LiDAR input: LAS/LAZ/BIN/TXT/SHP/BIL/ASC/DTM # raster output: BIL/ASC/IMG/TIF/DTM/PNG/JPG # # 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 lasmerge ...") ### 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 lasmerge executable lasmerge_path = lastools_path+"\\lasmerge.exe" ### check if executable exists if os.path.exists(lastools_path) == False: gp.AddMessage("Cannot find lasmerge.exe at " + lasmerge_path) sys.exit(1) else: gp.AddMessage("Found " + lasmerge_path + " ...") ### create the command string for lasmerge.exe command = ['"'+lasmerge_path+'"'] ### maybe use '-verbose' option if sys.argv[argc-1] == "true": command.append("-v") ### add first and second input LiDAR command.append("-i") command.append('"'+sys.argv[1]+'"') command.append('"'+sys.argv[2]+'"') ### maybe add another input LiDAR if sys.argv[3] != "#": command.append('"'+sys.argv[3]+'"') ### maybe add another input LiDAR if sys.argv[4] != "#": command.append('"'+sys.argv[4]+'"') ### maybe add another input LiDAR if sys.argv[5] != "#": command.append('"'+sys.argv[5]+'"') ### maybe add another input LiDAR if sys.argv[6] != "#": command.append('"'+sys.argv[6]+'"') ### maybe add another input LiDAR if sys.argv[7] != "#": command.append('"'+sys.argv[7]+'"') ### maybe add another input LiDAR if sys.argv[8] != "#": command.append('"'+sys.argv[8]+'"') ### maybe add another input LiDAR if sys.argv[9] != "#": command.append('"'+sys.argv[9]+'"') ### add output LiDAR command.append("-o") command.append('"'+sys.argv[10]+'"') ### maybe there are additional command-line options if sys.argv[11] != "#": additional_options = sys.argv[11].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 lasmerge gp.AddMessage(str(output)) ### check return code if returncode != 0: gp.AddMessage("Error. lasmerge failed.") sys.exit(1) ### report happy end gp.AddMessage("Success. lasmerge done.")