# # lasviewPro.py # # (c) 2013, martin isenburg - http://rapidlasso.com # rapidlasso GmbH - fast tools to catch reality # # uses lasview.exe to visualize LiDAR files # # LiDAR input: LAS/LAZ/BIN/TXT/SHP/BIL/ASC/DTM # # 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 lasview 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 lasview executable lasview_path = lastools_path+"\\lasview.exe" ### check if executable exists if os.path.exists(lastools_path) == False: gp.AddMessage("Cannot find lasview.exe at " + lasview_path) sys.exit(1) else: gp.AddMessage("Found " + lasview_path + " ...") ### create the command string for lasview.exe command = ['"'+lasview_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 ### maybe input files are flightlines if sys.argv[c] == "true": command.append("-files_are_flightlines") c = c + 1 ### maybe display different number of points if sys.argv[c] != "5000000": command.append("-points") command.append(sys.argv[c]) c = c + 1 ### which points to consider if sys.argv[c] == "first returns": command.append("-only_first") elif sys.argv[c] == "last returns": command.append("-only_last") elif sys.argv[c] == "multi returns": command.append("-only_multi") elif sys.argv[c] == "single returns": command.append("-only_single") elif sys.argv[c] == "ground": command.append("-ground") elif sys.argv[c] == "buildings": command.append("-buildings") elif sys.argv[c] == "vegetation": command.append("-vegetation") elif sys.argv[c] == "objects": command.append("-objects") elif sys.argv[c] == "ground and buildings": command.append("-ground_buildings") elif sys.argv[c] == "ground and vegetation": command.append("-ground_vegetation") elif sys.argv[c] == "ground and objects": command.append("-ground_objects") c = c + 1 ### how to color if sys.argv[c] == "elevation ramp 1": command.append("-color_by_elevation1") elif sys.argv[c] == "elevation ramp 2": command.append("-color_by_elevation2") elif sys.argv[c] == "classification": command.append("-color_by_classification") elif sys.argv[c] == "rgb": command.append("-color_by_rgb") elif sys.argv[c] == "flight line": command.append("-color_by_flight_line") elif sys.argv[c] == "intensity": command.append("-color_by_intensity") elif sys.argv[c] == "number returns": command.append("-color_by_returns") c = c + 1 ### maybe show control points if sys.argv[c] != "#": command.append("-cp") command.append('"'+sys.argv[c]+'"') c = c + 1 ### maybe add the control point parse string if sys.argv[c] != "#": command.append("-cp_parse") 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 lasview gp.AddMessage(str(output)) ### check return code if returncode != 0: gp.AddMessage("Error. lasview failed.") sys.exit(1) ### report happy end gp.AddMessage("Success. lasview done.")