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jblitzar
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github-python

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