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# outfilename = os.path.join(os.path.dirname(filename), root + "_EPSG_" + epsg + ".laz")
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outfilename = outfilename.replace('\\','/')
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prefix = str(uuid.uuid1())
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path = os.path.join(os.path.dirname(filename), prefix + ".laz")
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fileutils.copyfile(filename, path)
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cmd = "las2las64.exe" + \
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" -i %s " % (path) + \
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" -epsg %s " % (epsg) + \
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" -o %s" % (outfilename)
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stdout, stderr = runner(cmd, False)
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fileutils.deletefile(path)
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return outfilename
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###############################################################################
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def las2las(filename, odir, zcorrection=0, suffix="_Z"):
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'''correct a laz file by adding a user supplied correction'''
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# odirlog = makedirs(odir)
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filename = os.path.abspath(filename).replace('\\','/')
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root = os.path.splitext(os.path.basename(filename))[0]
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outfilename = os.path.join(odir, root + suffix + '.laz')
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outfilename = outfilename.replace('\\','/')
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cmd = "las2las64.exe" + \
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" -i %s " % (filename) + \
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" -drop_x_below %s" % (str(10))+ \
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" -translate_z %.3f " % (zcorrection) + \
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" -o %s" % (outfilename)
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stdout, stderr = runner(cmd, False)
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return outfilename
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###############################################################################
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def las2lasclipstarttime(filename, outfilename, clipstarttime=0):
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'''correct a laz file by adding a user supplied correction'''
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# odirlog = makedirs(odir)
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filename = os.path.abspath(filename).replace('\\','/')
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outfilename = os.path.abspath(outfilename).replace('\\','/')
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cmd = "las2las64.exe" + \
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" -i %s " % (filename) + \
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" -drop_x_below %s" % (str(10))+ \
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" -drop_gpstime_below %.3f " % (clipstarttime) + \
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" -o %s" % (outfilename)
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stdout, stderr = runner(cmd, False)
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return outfilename
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###############################################################################
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def ispositivedepths(rect):
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if rect.minz > 0 or rect.maxz > 0:
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return True
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if rect.minz < 0 or rect.maxz < 0:
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return False
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###############################################################################
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def getlazfirstlast(filename, odir, prefix="las2txt"):
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'''get the laz first and last records as fast as possible'''
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'''las2txt -i CATHX_D2019-08-29T00-36-18-702Z_None_X0.laz -thin_with_grid 1 -stdout | more'''
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if not os.path.isdir(odir):
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os.makedirs(odir)
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outfilename = os.path.join(odir, prefix + '_info.txt')
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fstd = open(outfilename, 'w')
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cmd = "las2txt64.exe" + \
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" -i %s" % (os.path.abspath(filename).replace('\\','/')) + \
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" -o %s" % (os.path.abspath(outfilename).replace('\\','/')) + \
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" -thin_with_grid 1"
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args = shlex.split(cmd)
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proc = subprocess.Popen(args, stdout=fstd, stderr=subprocess.PIPE)
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proc.wait()
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'''now extract the position informaiton '''
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startx = 0
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starty = 0
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startz = 0
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endx = 0
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endy = 0
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endz = 0
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f = open(outfilename, 'r')
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for line in f:
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line = line.strip()
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words = line.split(" ")
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if startx == 0:
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startx = float(words[0])
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