def NumpyTensorInitializerForVacancy(gridShape, filename, vacancyfile=None):
"""
Initialize a 10 component plasticity state by reading from a numpy "tofile" type file or two files.
"""
dict = {('x','x') : (0,0), ('x','y') : (0,1), ('x','z') : (0,2),\
('y','x') : (1,0), ('y','y') : (1,1), ('y','z') : (1,2),\
('z','x') : (2,0), ('z','y') : (2,1), ('z','z') : (2,2)}
data = fromfile(filename)
if vacancyfile is None:
data = data.reshape([10] + list(gridShape))
else:
data = data.reshape([3,3] + list(gridShape))
dataV = fromfile(vacancyfile)
dataV = dataV.reshape(list(gridShape))
state = VacancyState.VacancyState(gridShape)
field = state.GetOrderParameterField()
if vacancyfile is None:
i = 0
for component in field.components:
field[component] = copy(data[i])
i += 1
else:
for component in field.components:
if component[0] not in [x,y,z]:
field[component] = copy(dataV)
else:
field[component] = copy(data[dict[component]])
return state
def get_data(self):
self.text_sym.set_text("Symbol: %d" % (self.symbol))
derot_data = scipy.fromfile(self.h_derot_file, dtype=scipy.complex64, count=self.occ_tones)
acq_data = scipy.fromfile(self.h_acq_file, dtype=scipy.complex64, count=self.occ_tones)
fft_data = scipy.fromfile(self.h_fft_file, dtype=scipy.complex64, count=self.fft_size)
if(len(acq_data) == 0):
print "End of File"
else:
self.acq_data_reals = [r.real for r in acq_data]
self.acq_data_imags = [i.imag for i in acq_data]
self.derot_data_reals = [r.real for r in derot_data]
self.derot_data_imags = [i.imag for i in derot_data]
self.unequalized_angle = [math.atan2(x.imag, x.real) for x in fft_data]
self.equalized_angle = [math.atan2(x.imag, x.real) for x in acq_data]
self.derot_equalized_angle = [math.atan2(x.imag, x.real) for x in derot_data]
self.time = [i*(1/self.sample_rate) for i in range(len(acq_data))]
ffttime = [i*(1/self.sample_rate) for i in range(len(fft_data))]
self.freq = self.get_freq(ffttime, self.sample_rate)
for i in range(len(fft_data)):
if(abs(fft_data[i]) == 0.0):
fft_data[i] = complex(1e-6,1e-6)
self.fft_data = [20*log10(abs(f)) for f in fft_data]
def main():
print "opening files (this may take a while)..."
# open with each bit as an element in a numpy array
f1 = numpy.unpackbits(scipy.fromfile(open(FILE1), dtype="uint8"))
f2 = numpy.unpackbits(scipy.fromfile(open(FILE2), dtype="uint8"))
print f1[:100]
print f2[:100]
num_bits = len(f1)
# split these into a few arrays so that we can print a progress indicator
print "splitting arrays..."
inputs = numpy.array_split(f1, NUM_SPLITS)
outputs = numpy.array_split(f2, NUM_SPLITS)
errors = 0
# determine BER for each second/pair of arrays
for i in range(NUM_SPLITS):
ins = inputs[i]
outs = outputs[i]
# count number that are the same
errors += numpy.sum(ins != outs)
print str((i + 1) / float(NUM_SPLITS) * 100) + "%..."
print "...done!"
print "total bits: " + str(num_bits)
print "errors: " + str(errors)
print "bit error ratio: " + str(errors) + "/" + str(
num_bits) + " = " + str(errors / float(num_bits))
def get_data(self):
self.text_sym.set_text("Symbol: %d" % (self.symbol))
derot_data = scipy.fromfile(self.h_derot_file, dtype=scipy.complex64, count=self.occ_tones)
acq_data = scipy.fromfile(self.h_acq_file, dtype=scipy.complex64, count=self.occ_tones)
fft_data = scipy.fromfile(self.h_fft_file, dtype=scipy.complex64, count=self.fft_size)
if(len(acq_data) == 0):
print "End of File"
else:
self.acq_data_reals = [r.real for r in acq_data]
self.acq_data_imags = [i.imag for i in acq_data]
self.derot_data_reals = [r.real for r in derot_data]
self.derot_data_imags = [i.imag for i in derot_data]
self.unequalized_angle = [math.atan2(x.imag, x.real) for x in fft_data]
self.equalized_angle = [math.atan2(x.imag, x.real) for x in acq_data]
self.derot_equalized_angle = [math.atan2(x.imag, x.real) for x in derot_data]
self.time = [i*(1/self.sample_rate) for i in range(len(acq_data))]
ffttime = [i*(1/self.sample_rate) for i in range(len(fft_data))]
self.freq = self.get_freq(ffttime, self.sample_rate)
for i in range(len(fft_data)):
if(abs(fft_data[i]) == 0.0):
fft_data[i] = complex(1e-6,1e-6)
self.fft_data = [20*log10(abs(f)) for f in fft_data]
def main(argv):
inputfile = ''
original_file = ''
indices_file = ''
try:
opts, args = getopt.getopt(argv, "h:d:i:o:",
["dfile=", "itype=", "ofile="])
except getopt.GetoptError:
print 'file.py -d <file_to_decode> -o <original_file> -i <indices_file>'
sys.exit(2)
for opt, arg in opts:
print opt, arg,
if opt == '-h':
print 'file.py -d <file_to_decode> -o <original_file> -i <indices_file> '
sys.exit()
elif opt in ("-d", "--dfile"):
inputfile = arg
elif opt in ("-i", "--itype"):
indices_file = arg
elif opt in ("-o", "--ofile"):
original_file = arg
else:
print "check help for usage"
sys.exit()
print inputfile
print inputfile.split('_')
to_decode_file = scipy.fromfile(open(inputfile), dtype=scipy.float32)
original_string = scipy.fromfile(open(original_file), dtype=scipy.float32)
oracle_indices = np.load(indices_file)
print "\n lengths for measured data:", len(
to_decode_file), "length of orig transmission: ", len(original_string)
get_index = start_index(to_decode_file)
start_data_index = get_index + 1 # get_index+1 #(m-get_index) #m - (len(preamble) - get_index) +1
print "starting of data is ", start_data_index
plt.plot(to_decode_file[:start_data_index], '*-')
plt.savefig('abhinav.pdf')
plt.clf()
original_message = original_string[len(preamble):]
to_decode_data1 = to_decode_file[start_data_index:]
to_decode_data = to_decode_data1.astype(np.int64)
#print "lengths of data going in:", len(original_message), len(to_decode_data)
#bin_rep_to_decode=decoding_maj3(oracle_indices,to_decode_data)
bin_rep_to_decode = single_demod(oracle_indices, to_decode_data)
ber_single(oracle_indices, to_decode_data, original_message)
print "\nGoing to decode"
rs = reedsolo.RSCodec(32)
message_decoded = ''
try:
message_decoded = rs.decode(bin_rep_to_decode)
except:
print "Cannot decode using RS decoder "
print "decoded message is ", message_decoded
print "\n"
def loadData(input_data_path, output_data_path):
"""
load Training Data, include real and imag part
:return: dict contains all data
"""
train_input = scipy.fromfile(open(input_data_path), dtype=scipy.complex64)
train_output = scipy.fromfile(open(output_data_path),
dtype=scipy.complex64)
data = {"X": train_input, "Y": train_output}
return data
def loadData(path_data1, path_data2, binSizeTim):
ch0 = scipy.fromfile(path_data1, dtype=scipy.complex64)
ch1 = scipy.fromfile(path_data2, dtype=scipy.complex64)
N = min(len(ch0), len(ch1))
rem = N % binSizeTim
bNum = int(math.floor(N / binSizeTim))
ch0rshp = np.reshape(ch0[0:N - rem], [binSizeTim, bNum])
ch1rshp = np.reshape(ch1[0:N - rem], [binSizeTim, bNum])
return ch0rshp, ch1rshp
def main(argv):
inputfile=''
original_file=''
indices_file=''
try:
opts, args = getopt.getopt(argv,"h:d:i:o:",["dfile=","itype=","ofile="])
except getopt.GetoptError:
print 'file.py -d <file_to_decode> -o <original_file> -i <indices_file>'
sys.exit(2)
for opt, arg in opts:
print opt ,arg,
if opt == '-h':
print 'file.py -d <file_to_decode> -o <original_file> -i <indices_file> '
sys.exit()
elif opt in ("-d", "--dfile"):
inputfile = arg
elif opt in ("-i", "--itype"):
indices_file = arg
elif opt in ("-o", "--ofile"):
original_file = arg
else:
print "check help for usage"
sys.exit()
print inputfile
print inputfile.split('_')
to_decode_file = scipy.fromfile(open(inputfile), dtype=scipy.float32)
original_string = scipy.fromfile(open(original_file), dtype=scipy.float32)
oracle_indices = np.load(indices_file)
print "\n lengths for measured data:" , len(to_decode_file), "length of orig transmission: ",len(original_string)
get_index=start_index(to_decode_file)
start_data_index = get_index+1 # get_index+1 #(m-get_index) #m - (len(preamble) - get_index) +1
print "starting of data is ", start_data_index
plt.plot(to_decode_file[:start_data_index],'*-')
plt.savefig('abhinav.pdf')
plt.clf()
original_message =original_string[len(preamble):]
to_decode_data1= to_decode_file[start_data_index:]
to_decode_data= to_decode_data1.astype(np.int64)
#print "lengths of data going in:", len(original_message), len(to_decode_data)
#bin_rep_to_decode=decoding_maj3(oracle_indices,to_decode_data)
bin_rep_to_decode=single_demod(oracle_indices,to_decode_data)
ber_single(oracle_indices,to_decode_data, original_message)
print "\nGoing to decode"
rs= reedsolo.RSCodec(32)
message_decoded =''
try:
message_decoded = rs.decode(bin_rep_to_decode)
except:
print "Cannot decode using RS decoder "
print "decoded message is ",message_decoded
print "\n"
def plot_crosscorrelation(path_data1, path_data2, sample_size):
# Read in data
ch0 = scipy.fromfile(path_data1, dtype=scipy.complex64, count=sample_size)
ch1 = scipy.fromfile(path_data2, dtype=scipy.complex64, count=sample_size)
bucketSize = 100
# Number of samples
N = len(ch0)
bNum = int(math.floor(N / bucketSize))
# Sampling frequency
f_s = 1.0E6
# Sampling period
T_s = 1 / f_s
# Doppler frequency range
n_f_dop = 120
f_dop = np.arange(0, n_f_dop, step=1)
# time delay range
R = 100
plt.ion()
# plt.colorbar()
# corr = np.zeros((bucketSize, len(f_dop), bNum), dtype=np.complex64)
corr_tmp = np.zeros((R, len(f_dop)), dtype=np.complex64)
print(corr_tmp.shape)
for bi in range(bNum):
iStart = bi * bucketSize
#iEnd = iStart + bucketSize - 1
#i0 = 0
den_1 = 1 / R
for i in range(R):
for j in range(len(f_dop)):
# This equation is wrong, there must be a shift between ch0 and ch1
# corr[i0,j, bi] = ch0[i] * ch1[i] * np.exp(-1j *2*np.pi*f_dop[j]/(len(ch1)))
corr_tmp[i,
j] = ch0[i + iStart] * ch1[i + iStart - j] * np.exp(
-1j * 2 * np.pi * f_dop[j] * den_1)
#i0 += 1
plt.clf()
# plt.plot(np.sin(np.arange(100)/float(bi+1)))
plt.title("Bin number " + str(bi))
plt.imshow(corr_tmp.imag)
# plt.pcolormesh(corr_tmp.real)
plt.pause(0.01)
plt.ioff()
plt.show()
def readdatafile(fname):
root, ext = os.path.splitext(fname)
path, base = os.path.split(root)
datafilename = base + ext
parfile = root + '.par'
(common, channels) = readparfile(parfile)
channelindex = [n for n,d in enumerate(channels) if d['file'] == datafilename][0]
thechannel = channels[channelindex]
i = Data.Image()
i.Name = datafilename
i.ImageType = 'Topo'
i.XPos = float(common['X Offset'])
i.YPos = float(common['Y Offset'])
i.XSize = float(common['Field X Size in nm'])
i.YSize = float(common['Field Y Size in nm'])
i.XRes = int(common['Image Size in X'])
i.YRes = int(common['Image Size in Y'])
i.ZScale = (float(thechannel['maxphys']) - float(thechannel['minphys'])) / \
(float(thechannel['maxraw']) - float(thechannel['minraw']))
i.UBias = float(pickValueForMode(common,thechannel,'Gap Voltage'))
i.ISet = float(pickValueForMode(common,thechannel,'Feedback Set'))
i.ScanSpeed = float(common['Scan Speed'])
i.d = scipy.fromfile(file=fname,dtype=scipy.int16)
i.d = i.d.byteswap()
i.d.shape = i.XRes, i.YRes
i.updateDataRange()
return i
def read_sample_file(path, filename, basetype=scipy.float32):
cwd = os.path.dirname(os.path.realpath(__file__))
os.chdir(path)
packed_samples = scipy.fromfile(open(filename), dtype=basetype)
y = packed_samples[::2] + 1j * packed_samples[1::2]
os.chdir(cwd)
return y
def read_pst(pst_path):
""" read tillvision based .pst files as uint16.
note: this func was flagged deprecated ("use the version in gioIO" instead,
but that one never existed ... ")
problematic: does not work on all .pst on my machine """
inf_path = os.path.splitext(pst_path)[0] + '.inf'
# reading stack size from inf
meta = {}
with open(inf_path,'r') as fh:
# fh.next()
for line in fh.readlines():
try:
k,v = line.strip().split('=')
meta[k] = v
except:
pass
shape = sp.int32((meta['Width'],meta['Height'],meta['Frames']))
raw = sp.fromfile(pst_path,dtype='int16')
data = sp.reshape(raw,shape,order='F')
return data.astype('uint16')
def count(plot=False
): #Use plot to allow calling from other (supervisor) functions
# File operations
f = scipy.fromfile(open(getcwd() + '/' + relative_path_to_file),
dtype=scipy.float32)
if Verbose:
print("Number of datapoints is: %i" % f.size)
#f = f[first_sample:last_sample]
abs_f = abs(f[0::2] + 1j * f[1::2])
try:
abs_f = abs_f / np.amax(abs_f)
except Exception as e:
print("Error when normalising: \"%s\" " % e)
return 0
# Matched filter to reduce hf noise
abs_f = scipy.signal.correlate(abs_f, np.ones(decim), mode='same') / decim
count_rn16 = count_rn16s_gate(abs_f, plot)
if plot:
# plt.plot(abs_f)
plt.plot(np.around(abs_f / np.amax(abs_f)))
plt.show()
return count_rn16
def __init__(self, filename, center_freq=850e6, sample_rate=5e5, file_datatype = np.complex64):
self.filename = filename;
self.freq = center_freq;
self.samp_rate = sample_rate
self.cmplx_data = scipy.fromfile(open(filename), dtype = file_datatype)
self.n = len(self.cmplx_data)
self.samp_spacing = 1.0/self.samp_rate
def after_record(tb, cf):
tb.stop()
tb.wait()
import scipy
vals = scipy.fromfile(open("out"), dtype=float)
#print vals
print len(vals)
readings_per_sample = 2048
samples = len(vals)/readings_per_sample
sums = ([0] * readings_per_sample)
for i in range(samples):
sample = vals[i*readings_per_sample:(i+1)*readings_per_sample]
for j in range(readings_per_sample):
sums[j] += sample[j]
for i in xrange(readings_per_sample):
sums[i] /= samples
#print sums
#for i in range(readings_per_sample):
#print sums[i].imag ,sums[i].real
#print sums[i].real
print len(sums)
x = [cf-1e6+i*(4e6/readings_per_sample) for i in range(readings_per_sample/2)]
y = [10*(math.log10((sums[i])/10**5)) for i in range(readings_per_sample/2)]
#if x[i] == cf:
#y=0
with open(get_record_filename(cf), "w") as f:
f.write(str(zip(x, y)))
def count(plot=False): #Use plot to allow calling from other (supervisor) functions
# File operations
f = scipy.fromfile(open(getcwd() + '/' + relative_path_to_file), dtype=scipy.float32)
if Verbose:
print("Number of datapoints is: %i"% f.size)
#f = f[first_sample:last_sample]
abs_f = abs(f[0::2] + 1j * f[1::2])
try:
abs_f = abs_f / np.amax(abs_f)
except Exception as e:
print("Error when normalising: \"%s\" "%e)
return 0
# Matched filter to reduce hf noise
abs_f = scipy.signal.correlate(abs_f, np.ones(decim), mode='same') / decim
#Remove dc
to_remove = abs_f < 0.25
abs_f = np.delete(abs_f, np.where(to_remove))
mean = np.mean(abs_f)
if mean<0.7:
print("Mean value is %0.4f <0.7 so reads present: "%mean,end='')
count_rn16 = count_rn16s_filter(abs_f,plot)
else:
print("Mean value is %0.4f >0.7 so no reads present"%mean,end='')
return 0
if plot:
# plt.plot(abs_f)
plt.plot(abs_f)
plt.show()
return count_rn16
def get_data(self, hfile):
self.text_file_pos.set_text("FilePosition: %d" %
(hfile.tell() // self.sizeof_data))
try:
f = scipy.fromfile(hfile,
dtype=self.datatype,
count=self.block_length)
except MemoryError:
print "End of File"
else:
self.f = scipy.array(f)
self.time = scipy.array(
[i * (1 / self.sample_rate) for i in range(len(self.f))])
fhh2 = open(r'/home/andy/kk.txt', 'w')
print str(len(self.f))
data = []
for j in range(len(self.f)):
data.append((self.f[j]))
fhh2.write(str(data))
fhh2.close()
def get_data(self):
self.position = self.hfile.tell() / self.sizeof_data
self.text_file_pos.set_text("File Position: %d" % self.position)
try:
self.iq = scipy.fromfile(self.hfile,
dtype=self.datatype,
count=self.block_length)
except MemoryError:
print("End of File")
return False
else:
# retesting length here as newer version of scipy
# does not throw a MemoryError, just returns a zero-length array.
if (len(self.iq) > 0):
tstep = 1.0 / self.sample_rate
#self.time = scipy.array([tstep*(self.position + i)
# for i in xrange(len(self.iq))])
self.time = scipy.array(
[tstep * (i) for i in xrange(len(self.iq))])
self.iq_psd, self.freq = self.dopsd(self.iq)
return True
else:
print "End of File"
return False
def get_all_values(self, p_channels_num=1):
assert (p_channels_num > 0)
self.finish_reading()
self.start_reading()
f_len = float(os.path.getsize(self._file_path))
ch_len = int((f_len / self._sample_size) / p_channels_num)
if ch_len * self._sample_size * p_channels_num != f_len:
LOGGER.info(''.join([
"Remained samples ",
str(f_len - ch_len * self._sample_size * p_channels_num),
" .Should be 0."
]))
vals = scipy.zeros((p_channels_num, ch_len))
k = 0
while True:
try:
r = scipy.fromfile(self._data_file, self._sample_struct_type,
p_channels_num)
except MemoryError:
break
if len(r) < p_channels_num:
break
for i in range(p_channels_num):
vals[i, k] = r[i]
k += 1
return vals
def read_pst(pst_path):
""" read tillvision based .pst files as uint16.
note: this func was flagged deprecated ("use the version in gioIO" instead,
but that one never existed ... ")
problematic: does not work on all .pst on my machine """
inf_path = os.path.splitext(pst_path)[0] + '.inf'
# reading stack size from inf
meta = {}
with open(inf_path,'r') as fh:
# fh.next()
for line in fh.readlines():
try:
k,v = line.strip().split('=')
meta[k] = v
except:
pass
shape = sp.int32((meta['Width'],meta['Height'],meta['Frames']))
raw = sp.fromfile(pst_path,dtype='int16')
data = sp.reshape(raw,shape,order='F')
return data.astype('uint16')
def main():
parser = argparse.ArgumentParser()
parser.add_argument('file', help="Raw sample file")
parser.add_argument('--thres',
type=int,
default=1000,
help="Power threshold")
parser.add_argument('--out', help="Output file")
parser.add_argument(
'--skip',
type=int,
default=int(0.1 * 20e6),
help="Inital samples to skip (USRP stabilization period)")
args = parser.parse_args()
wave = scipy.fromfile(args.file, dtype=scipy.int16)
raw_samples = [
complex(i, q) for i, q in itertools.izip(wave[::2], wave[1::2])
]
print "%d raw samples" % (len(raw_samples))
if args.out is None:
args.out = '_condensed'.join(os.path.splitext(args.file))
fh = open(args.out, 'wb')
state = 'idle'
count = 0
countdown = 0
for i in xrange(0, len(raw_samples), WINDOW):
if i < args.skip:
continue
if state == 'idle':
if any(
[abs(c.real) > args.thres for c in raw_samples[i:i + WINDOW]]):
state = 'trigger'
countdown = 80 * 10
count += 1
if state == 'trigger':
if countdown > 0:
do_write = True
elif any(
[abs(c.real) > args.thres for c in raw_samples[i:i + WINDOW]]):
do_write = True
else:
do_write = False
state = 'idle'
if do_write:
for c in raw_samples[i:i + WINDOW]:
fh.write(struct.pack('<hh', int(c.real), int(c.imag)))
countdown -= WINDOW
fh.close()
print "%d packets" % (count)
print "Output written to %s" % (args.out)
def do_GET(self):
self.send_response(200)
self.send_header("Content-type","text/html")
self.end_headers()
query_string = urlparse.urlparse(self.path).query
if(self.path == PATH_FLOW_GRAPH):
fp = open(PATH_FLOW_GRAPH,"rb")
self.wfile.write(fp.read())
else:
query_string = urllib.unquote(query_string)
#Gather individual parameters
param_list = query_string.split("&")
#append filename of xml parsing file
param_list.insert(0,"./xmlparse.py")
xmlproc = subprocess.Popen(param_list)
xmlproc.wait()
process = subprocess.Popen([PATH_TOP_BLOCK], stdout=subprocess.PIPE)
time.sleep(2)
process.kill()
arr = scipy.fromfile(OUT_FILE_PATH,dtype=scipy.float32,count=NUM_VALUES)
value = []
for i in range(NUM_VALUES):
value.append([str(i),float(arr[i])])
description = [('Output number','string'),('Result','number')]
table = gviz_api.DataTable(description)
path_flow_graph = PATH_FLOW_GRAPH
res = """
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart()
{
var data = new google.visualization.DataTable(%(values)s,0.6);
var options = {
title: 'Square Plot'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<h1>FLOW GRAPH:</h1><br/>
<img src=%(path_flow_graph)s alt="flow graph" height="700" width="900" align="middle">
<h1>PLOT:</h1><br/>
<div id="chart_div" style="width: 1200px; height: 350px;"></div>
</body>
</html>
"""
table.AppendData(value)
values = table.ToJSon(columns_order=('Output number','Result'))
result = res % vars()
self.wfile.write(result)
def volume_from_file(filename, frameshape=(512, 512)):
with file(filename) as fp:
arr = scipy.fromfile(fp, dtype=scipy.uint8)
x, y = frameshape
n, = arr.shape
n /= x * y
arr.shape = n, x, y
return arr
def read_dat(self, filename=None):
if not filename:
filename = self.filename
try:
return sp.fromfile(filename)
except:
CXP.log.error('Could not extract data from data file.')
raise
def read_dat(self, filename=None):
if not filename:
filename = self.filename
try:
return sp.fromfile(filename)
except:
CXP.log.error('Could not extract data from data file.')
raise
def NumpyTensorInitializer(gridShape, filename, bin=True):
"""
Initialize a 9 component plasticity state by reading from a numpy "tofile" type file.
"""
if bin:
data = fromfile(filename)
else:
data = fromfile(filename,sep=' ')
data = data.reshape([3,3] + list(gridShape))
state = PlasticityState.PlasticityState(gridShape)
dict = {('x','x') : (0,0), ('x','y') : (0,1), ('x','z') : (0,2),\
('y','x') : (1,0), ('y','y') : (1,1), ('y','z') : (1,2),\
('z','x') : (2,0), ('z','y') : (2,1), ('z','z') : (2,2)}
field = state.GetOrderParameterField()
for component in field.components:
field[component] = copy(data[dict[component]])
return state
def read_samples_scipy(self,filename, blocklen):
import scipy
print filename
iq_samples = scipy.fromfile(filename,
dtype=scipy.complex64,
count=blocklen)
return iq_samples
def loadData(self):
"""
Load raw data from file
"""
signal = scipy.fromfile(open(self.fileName + '.raw'),
dtype=scipy.complex64)
signal = np.array(signal)
return signal
def make_prediction(self,sample_file): import scipy print sample_file iq_samples = scipy.fromfile(sample_file, dtype=scipy.complex64) print iq_samples.shape fi, Pxi = self.PSD(iq_samples,3e6) # Compute PSD tmpdf = self.ComputeFreqFeatures(Pxi,fi) # Feature Engineering return self.le_l.inverse_transform(self.predict_h2(tmpdf)) # Return predictions
def plot_crosscorrelation(path_data1, path_data2, sample_size=None):
# Read in data
sample_size = 50000
ch0 = scipy.fromfile(path_data1, dtype=scipy.complex64, count=sample_size)
ch1 = scipy.fromfile(path_data2, dtype=scipy.complex64, count=sample_size)
c = float(3E8)
f0 = float(88.8E6)
maxrange = float(100E3)
maxvel = 500 / 3.6
maxdoppler = (c + maxvel) / c * f0 - f0
maxdelay = maxrange / c
fs = float(200E3)
min_len = min(len(ch0), len(ch1))
maxshift = int(round(maxdelay * fs))
maxtrans = int(round(min_len * maxdoppler / fs))
print(maxtrans, maxdoppler, len(ch0), len(ch1))
ch0_fft = fftpack.fft(ch0)
ch1_fft = fftpack.fft(ch1)
out = np.zeros((2 * maxtrans + 1, 2 * maxshift), dtype=np.complex64)
# plt.ion()
for i in range(-maxtrans, maxtrans):
# ch1s = np.copy(ch1)
corr_fft = ch0_fft * np.roll(ch1, i)
corr = fftpack.ifft(corr_fft)
out[i + maxtrans + 1] = np.concatenate(
(corr[-maxshift:], corr[:maxshift]))
print(out.shape)
out = np.absolute(out)
# plt.clf()
# plt.plot(np.sin(np.arange(100)/float(bi+1)))
# plt.title("Bin number "+str(bi))
plt.imshow(out)
# plt.pcolormesh(corr_tmp.real)
# plt.pause(0.01)
# plt.ioff()
plt.show()
def get_data(self, hfile):
self.text_file_pos.set_text("File Position: %d" % (hfile.tell()//self.sizeof_data))
f = scipy.fromfile(hfile, dtype=self.datatype, count=self.block_length)
#print "Read in %d items" % len(self.f)
if(len(f) == 0):
print "End of File"
else:
self.f = f
self.time = [i*(1/self.sample_rate) for i in range(len(self.f))]
def generate_plot(filepath):
'''
Make a basic plot of the binary output data (from gnuradio)
'''
dataLen = 1000
data = scipy.fromfile(open(filepath), dtype=scipy.complex64, count=dataLen)
plt.figure()
plt.plot(data)
plt.show()
def _fromfile(self, fileid):
self.header=sc.rec.fromfile(fileid, dtype=_HEADER_1, shape=1, byteorder='<')[0]
dtype=self.get_dtype(self.header.datatype)
xdim=self.header.xdim
ydim=self.header.ydim
nfram=self.header.NumFrames
data=sc.fromfile(fileid, dtype=dtype, count=nfram*xdim*ydim)
self.frames=sc.reshape(data,(nfram, ydim, xdim,))
def get_data(self, hfile):
self.text_file_pos.set_text("File Position: %d" % (hfile.tell() // self.sizeof_data))
try:
f = scipy.fromfile(hfile, dtype=self.datatype, count=self.block_length)
except MemoryError:
print "End of File"
else:
self.f = scipy.array(f)
self.time = scipy.array([i * (1 / self.sample_rate) for i in range(len(self.f))])
def gr_f32_file_input(fp, verbose=0):
#desc: Imports GNU Radio Float32 File
#input: full path to file, assumes is valid
#output: list of floats for doppler data
#import gnuradio float32 type, uses scipy
f = scipy.fromfile(open(fp, 'r'), dtype=scipy.float32)
if verbose: print "Found {:d} 32 bit floats".format(len(f))
return f
def get_data(self, hfile):
self.text_file_pos.set_text("File Position: %d" % (hfile.tell()//self.sizeof_data))
try:
f = scipy.fromfile(hfile, dtype=self.datatype, count=self.block_length)
except MemoryError:
print("End of File")
else:
self.f = scipy.array(f)
self.time = scipy.array([i*(1 / self.sample_rate) for i in range(len(self.f))])
def get_data(self):
self.text_file_pos.set_text("File Position: %d" % (self.hfile.tell()//self.sizeof_data))
self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
#print "Read in %d items" % len(self.iq)
if(len(self.iq) == 0):
print "End of File"
else:
self.reals = [r.real for r in self.iq]
self.imags = [i.imag for i in self.iq]
self.time = [i*(1/self.sample_rate) for i in range(len(self.reals))]
def process(self, limit):
'''Get upto limit values from outfile and return values to caller'''
process = subprocess.Popen(self.path)
time.sleep(2)
process.kill()
arr = scipy.fromfile(self.outfile, dtype=scipy.float32, count=limit)
value = []
for i in range(limit):
value.append([str(i), float(arr[i])])
return value
def _read_index_file(self, ext):
f = self.__dict__['f' + ext]
logger.info('Reading file %s ...' % f.name)
if ext == 'fts':
vals = f.read().split('\n')[:-1]
else:
vals = scipy.fromfile(f, sep='\n', dtype=scipy.int32)
if ext == 'fts' or ext == 'ids':
vals = dict((v, i) for i, v in enumerate(vals))
self.__dict__[ext] = vals
def __init__(self,
filename,
center_freq=850e6,
sample_rate=5e5,
decimation=1,
file_datatype=np.complex64):
self.filename = filename
self.freq = center_freq
self.samp_rate = sample_rate
self.cmplx_data = scipy.fromfile(open(filename), dtype=file_datatype)
self.decimation = decimation
if self.decimation > 1:
self.cmplx_data = scipy.signal.resample(
scipy.fromfile(open(filename), dtype=file_datatype),
self.samp_rate / self.decimation)
self.samp_rate = sample_rate / self.decimation
self.n = len(self.cmplx_data)
print 'self.n: ', self.n
self.samp_spacing = 1.0 / self.samp_rate
def _read_index_file(self, ext):
f = self.__dict__['f'+ext]
logger.info('Reading file %s ...' % f.name)
if ext == 'fts':
vals = f.read().split('\n')[:-1]
else:
vals = scipy.fromfile(f, sep='\n', dtype=scipy.int32)
if ext == 'fts' or ext == 'ids':
vals = dict((v, i) for i, v in enumerate(vals))
self.__dict__[ext] = vals
def get_data(self):
self.text_file_pos.set_text("File Position: %d" % (self.hfile.tell()//self.sizeof_data))
try:
self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
except MemoryError:
print "End of File"
else:
self.reals = scipy.array([r.real for r in self.iq])
self.imags = scipy.array([i.imag for i in self.iq])
self.time = scipy.array([i*(1/self.sample_rate) for i in range(len(self.reals))])
def filereader(filename):
z= scipy.fromfile(open(filename), dtype=scipy.complex64)
# dtype with scipy.int16, scipy.int32, scipy.float32, scipy.complex64 or whatever type you were using.
mag, phase,x,y = [], [], [], []
for i in range(0, len(z)):
mag.append(np.absolute(z[i]))
x.append(z[i].real)
y.append(z[i].imag)
phase.append(np.angle(z[i]))
return [x,y,mag, phase,z]
def process(self,limit): '''Get upto limit values from outfile and return values to caller''' process = subprocess.Popen(self.path) time.sleep(2) process.kill() arr = scipy.fromfile(self.outfile, dtype=scipy.float32, count = limit) value = [] for i in range(limit): value.append([str(i),float(arr[i])]) return value
def read_grc_data(self):
"""Loads data from given path (self.path) and identifier (self.ident)
:returns: Array of [time and phase] values.
"""
self.phase = scipy.fromfile(open(self.path + '/' + self.ident + '/' +
self.ident + '-phase-new.dat'),
dtype=scipy.float32)
self.time = scipy.fromfile(open(self.path + '/' + self.ident + '/' +
self.ident + '-time-new.dat'),
dtype=scipy.float32)
# fixes different lenghts of data phase and time, this does not significantly "destroy" data
if len(self.phase) < len(self.time):
self.time = self.time[:len(self.phase)]
elif len(self.phase) > len(self.time):
self.phase = self.phase[:len(self.time)]
return [self.time, self.phase]
def get_data(self):
self.text_file_pos.set_text("File Position: %d" % (self.hfile.tell()//self.sizeof_data))
self.floats = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
#print "Read in %d items" % len(self.floats)
if(len(self.floats) == 0):
print "End of File"
else:
self.f_fft = self.dofft(self.floats)
self.time = [i*(1/self.sample_rate) for i in range(len(self.floats))]
self.freq = self.calc_freq(self.time, self.sample_rate)
def avim(dtype = float, pix=2048):
'''
averages scipy stored binary DATs.
Inputs: the dtype and the image size
'''
filenames = tkFileDialog.askopenfilenames(title = 'select files to average',
filetypes=[('Scipy DATs','.dat')])
im = sp.zeros((pix,pix))
for file in filenames:
im += 1.*sp.fromfile(file,dtype).reshape(pix,pix)
return im/len(filenames)
def get_data(self):
self.position = self.hfile.tell()/self.sizeof_data
self.text_file_pos.set_text("File Position: %d" % self.position)
self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
#print "Read in %d items" % len(self.iq)
if(len(self.iq) == 0):
print "End of File"
else:
tstep = 1.0 / self.sample_rate
self.time = [tstep*(self.position + i) for i in xrange(len(self.iq))]
self.iq_psd, self.freq = self.dopsd(self.iq)
def zeroextract2d(N,filename):
a = fromfile(filename)
a = a.reshape(9,N,N)
b = numpy.zeros((9,N/2,N/2),float)
for i in range(9):
ka = fft.rfftn(a[i])
kb = numpy.zeros((N/2,N/4+1),complex)
kb[:N/4,:]=ka[:N/4,:N/4+1]
kb[-N/4:,:]=ka[-N/4:,:N/4+1]
b[i] = fft.irfftn(kb)
b /= 4.
b.tofile(filename.replace(str(N),str(N/2)))
def get_data(self):
self.position = self.hfile.tell()/self.sizeof_data
self.text_file_pos.set_text("File Position: %d" % self.position)
try:
self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
except MemoryError:
print "End of File"
else:
tstep = 1.0 / self.sample_rate
#self.time = scipy.array([tstep*(self.position + i) for i in xrange(len(self.iq))])
self.time = scipy.array([tstep*(i) for i in xrange(len(self.iq))])
self.iq_psd, self.freq = self.dopsd(self.iq)
def NumpyTensorInitializerForRho(gridShape, filename):
"""
Initialize a 9 component plasticity state by reading from a numpy "tofile" type file.
"""
data = fromfile(filename)
data = data.reshape([3,3] + list(gridShape))
dict = {('x','x') : (0,0), ('x','y') : (0,1), ('x','z') : (0,2),\
('y','x') : (1,0), ('y','y') : (1,1), ('y','z') : (1,2),\
('z','x') : (2,0), ('z','y') : (2,1), ('z','z') : (2,2)}
rho = Fields.TensorField(gridShape)
for component in rho.components:
rho[component] = copy(data[dict[component]])
state = RhoState.RhoState(gridShape, field=rho)
return state
def get_data(self):
self.text_file_pos.set_text("File Position: %d" % (self.hfile.tell() // self.sizeof_data))
try:
iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
except MemoryError:
print "End of File"
else:
# retesting length here as newer version of scipy does not throw a MemoryError, just
# returns a zero-length array
if len(iq) > 0:
self.reals = scipy.array([r.real for r in iq])
self.imags = scipy.array([i.imag for i in iq])
self.time = scipy.array([i * (1 / self.sample_rate) for i in range(len(self.reals))])
return True
else:
print "End of File"
return False
def _get_channels(self, chans, kind='a'):
"""returns a numpy array of the channel data"""
# init and check
if kind not in ['a', 'd', 'e']:
raise ValueError('unknown kind (%s), accepts: \'a\', \'d\' and \'e\'!')
ch = {'a': self._ch_analog,
'd': self._ch_digital,
'e': self._ch_event}[kind]
dtype = {'a': sp.int16,
'd': sp.int32,
'e': sp.int32}[kind]
if not chans:
raise ValueError('chans not valid!')
n_sample = 0
for c in chans:
try:
if ch[c].n_sample > n_sample:
n_sample = ch[c].n_sample
except KeyError:
warnings.warn('invalid channel: %s' % c, RuntimeWarning)
if n_sample == 0:
warnings.warn('no data for chans %s' % str(chans), RuntimeWarning)
return sp.zeros((n_sample, len(chans)), dtype=dtype)
# collect data
rval = sp.zeros((n_sample, len(chans)), dtype=dtype)
for i, c in enumerate(chans):
# load from file
try:
header = ch[c]
self._file.seek(header.data_offset)
load_item = sp.fromfile(file=self._file, count=header.n_sample, dtype=dtype)
except KeyError:
warnings.warn('invalid channel: %s!' % c, RuntimeWarning)
load_item = sp.zeros(n_sample, dtype=dtype)
# unfortunately the channel shapes are not always consistent
# across the tetrode. but we preallocate space such that the
# largest item may fit in the buffer.
rval[:load_item.size, i] = load_item
# return stuff
return rval
def read_samples_c(filename, start, in_size, min_size=0):
# Complex samples are handled differently
fhandle = open(filename, 'r')
fhandle.seek(start*gr.sizeof_gr_complex, 0)
data = scipy.fromfile(fhandle, dtype=scipy.complex64, count=in_size)
data_min = 1.1*float(min(data.real.min(), data.imag.min()))
data_max = 1.1*float(max(data.real.max(), data.imag.max()))
data = data.tolist()
fhandle.close()
if(min_size > 0):
if(len(data) < in_size):
print "Warning: read in {0} samples but asked for {1} samples.".format(
len(data), in_size)
else:
# If we have to, append 0's to create min_size samples of data
if(len(data) < min_size):
data += (min_size - len(data)) * [complex(0,0)]
return data, data_min, data_max
def filereader(filename,fs):
z= scipy.fromfile(open(filename), dtype=scipy.complex64)
print "length of total z= ", len(z)
# dtype with scipy.int16, scipy.int32, scipy.float32, scipy.complex64 or whatever type you were using.
mag, phase,x,y = [], [], [], []
start_sec=0.001
end_sec=0.1
z_needed = z[start_sec*fs: end_sec*fs]
#z_needed = z[600+start_sec*fs: 600+end_sec*fs]
z=z_needed
len_z = int(len(z))
print "length of needed z= ", len(z)
#len_z = int(20.0/6*len(z))
#len_z = int(400.0/6000*len(z))
for i in range(0, len_z):
mag.append(np.absolute(z[i]))
x.append(z[i].real)
y.append(z[i].imag)
phase.append(np.angle(z[i]))
return [x,y,mag, phase,z]
def get_data(self):
self.position = self.hfile.tell()/self.sizeof_data
self.text_file_pos.set_text("File Position: %d" % self.position)
try:
self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
except MemoryError:
print "End of File"
return False
else:
# retesting length here as newer version of scipy does not throw a MemoryError, just
# returns a zero-length array
if(len(self.iq) > 0):
tstep = 1.0 / self.sample_rate
#self.time = scipy.array([tstep*(self.position + i) for i in xrange(len(self.iq))])
self.time = scipy.array([tstep*(i) for i in xrange(len(self.iq))])
self.iq_psd, self.freq = self.dopsd(self.iq)
return True
else:
print "End of File"
return False
def read_samples(filename, start, in_size, min_size, dtype, dtype_size):
# Read in_size number of samples from file
fhandle = open(filename, 'r')
fhandle.seek(start*dtype_size, 0)
data = scipy.fromfile(fhandle, dtype=dtype, count=in_size)
data_min = 1.1*data.min()
data_max = 1.1*data.max()
data = data.tolist()
fhandle.close()
if(min_size > 0):
if(len(data) < in_size):
print "Warning: read in {0} samples but asked for {1} samples.".format(
len(data), in_size)
else:
# If we have to, append 0's to create min_size samples of data
if(len(data) < min_size):
data += (min_size - len(data)) * [dtype(0)]
return data, data_min, data_max