def linestyle(i,a=5,b=3):
'''
provide one out of 25 unique combinations of style, color and mark
use in combination with markevery=a+mod(i,b) to add spaced points,
here a would be the base spacing that would depend on the data
density, modulated with the number of lines to be plotted (b)
Parameters
----------
i : integer
Number of linestyle combination - there are many....
a : integer
Spacing of marks. The default is 5.
b : integer
Modulation in case of plotting many nearby lines. The default
is 3.
Examples
--------
>>> plot(x,sin(x),linestyle(7)[0], markevery=linestyle(7)[1])
(c) 2014 FH
'''
import scipy as sc
lines=['-','--','-.',':']
points=['v','^','<','>','1','2','3','4','s','p','*','h','H','+','x','D','d','o']
colors=['b','g','r','c','m','k']
ls_string = colors[sc.mod(i,6)]+lines[sc.mod(i,4)]+points[sc.mod(i,18)]
mark_i = a+sc.mod(i,b)
return ls_string,mark_i
def __init__(self, dim, obs, tot, Zeta=None, E=None):
# - dim (2d tuple): dimensionality of each view
# - obs (ndarray): observed data
# - E (ndarray): initial expected value of pseudodata
PseudoY_Seeger.__init__(self, dim=dim, obs=None, params=params, E=E)
# Initialise the observed data
assert s.all(s.mod(obs, 1) == 0) and s.all(s.mod(tot, 1) == 0), "Data must not contain float numbers, only integers"
assert s.all(obs >= 0) and s.all(tot >= 0), "Data must not contain negative numbers"
assert s.all(obs <= tot), "Observed counts have to be equal or smaller than the total counts"
self.obs = obs
self.tot = tot
def localProjection(lon, lat, radius, lon_0, lat_0, inverse=False):
""" This function was written to use instead of Basemap which is very slow"""
if inverse:
x, y = lon, lat
lat = np.fmin(np.fmax(lat_0 + y / radius, -sp.pi / 2), sp.pi / 2)
lon = sp.mod(lon_0 + x /
(radius * sp.cos(lat_0)) + sp.pi, 2 * sp.pi) - sp.pi
return (lon, lat)
else:
y = (lat - lat_0) * radius
x = (sp.mod(lon - lon_0 + sp.pi, 2 * sp.pi) -
sp.pi) * radius * sp.cos(lat_0)
return (x, y)
def transfermisigns(Lx, Ly, shift, q):
kx, ky = fermisea(Lx, Ly, shift)
kqx = sc.mod(kx * Lx - shift[0] - q[0] * Lx, Lx) / Lx + shift[0] / Lx
kqy = sc.mod(ky * Ly - shift[1] - q[1] * Ly, Ly) / Ly + shift[1] / Ly
kqx, kqy = mbzmod(kqx, kqy)
fsign = sc.zeros(len(kx))
gsup = sc.zeros(2 * len(kx))
gsup[0::2] = 1
gsdo = sc.zeros(2 * len(kx))
gsdo[0::2] = 1
for k in range(len(kx)):
ma = abs(kqx[k] - kx) + abs(kqy[k] - ky)
ma = (ma == sc.amin(ma))
idx = sc.arange(0, len(ma), 1)[ma]
fsign[k] = (-1)**sum(gsdo[0:2 * idx]) * (-1)**sum(gsup[0:(2 * k + 1)])
return fsign
def get_usgs_n(self):
if self.get_usgsrc() == 0:
return
self.get_values(
) # Fetch usgsq,usgsh,handq,handh,handarea,handrad,handslope, handstage
# Find indices for integer stageheight values in usgsh, and apply to usgsq
usgsidx = scipy.where(scipy.equal(scipy.mod(
self.usgsh, 1), 0)) # Find indices of integer values in usgsh
usgsh = self.usgsh[usgsidx]
usgsq = self.usgsq[usgsidx]
# Find indices where usgsh[usgsidx] occur in handstage, and apply to handarea and handrad
handidx = scipy.where(scipy.in1d(self.handstage, usgsh))
area = self.handarea[handidx]
hydrad = self.handrad[handidx]
# Remove usgsq values for duplicate usgsh heights (keep first instance only)
if usgsh.shape != area.shape:
for i in range(usgsh.shape[0]):
if i == 0: pass
elif usgsh[i] == usgsh[i - 1]:
usgsq = scipy.delete(usgsq, i)
# Calculate average manning's n after converting discharge units
disch = usgsq #*0.0283168 # Convert cfs to cms
self.usgsroughness_array = self.mannings_n(area=area,
hydrad=hydrad,
slope=self.handslope,
disch=disch)
self.usgsroughness = scipy.average(self.usgsroughness_array)
print 'Average roughness: {0:.2f}'.format(self.usgsroughness)
def fitsurface(errfunc,paramlists,inputs):
"""This function will create a fit surface using an error function given by the user
and an N length list of parameter value lists. The output will be a N-dimensional array
where each dimension is the size of the array given for each of the parameters. Arrays of
one element are not represented in the returned fit surface array.
Inputs:
errfunc - The function used to determine the error between the given data and
the theoretical function
paramlists - An N length list of arrays for each of the parameters.
inputs - A tuple of the rest of the inputs for error function."""
paramsizlist = sp.array([len(i) for i in paramlists])
outsize = sp.where(paramsizlist!=1)[0]
# make the fit surface and flatten it
fit_surface = sp.zeros(paramsizlist[outsize])
fit_surface = fit_surface.flatten()
for inum in range(sp.prod(paramsizlist)):
numcopy = inum
curnum = sp.zeros_like(paramsizlist)
# TODO: Replace with sp.unravel_index
# determine current parameters
for i, iparam in enumerate(reversed(paramsizlist)):
curnum[i] = sp.mod(numcopy,iparam)
numcopy = sp.floor(numcopy/iparam)
curnum = curnum[::-1]
cur_x = sp.array([ip[curnum[num_p]] for num_p ,ip in enumerate(paramlists)])
diffthing = errfunc(cur_x,*inputs)
fit_surface[inum]=(sp.absolute(diffthing)**2).sum()
# return the fitsurace after its been de flattened
return fit_surface.reshape(paramsizlist[outsize]).copy()
def get_sawtooth_map():
gridmap = tklib_log_gridmap(100, 30, 0.1)
x_size = gridmap.get_map_width()
y_size = gridmap.get_map_height()
#fill first with nothing
for i in range(x_size):
for j in range(y_size):
gridmap.set_value(i, j, -10000.0)
#fill in the left/right wall
for i in range(x_size):
gridmap.set_value(i, 0, 10000.0)
gridmap.set_value(i, y_size - 1, 10000.0)
#fill in the top/bottom wall
for i in range(y_size):
gridmap.set_value(0, i, 10000.0)
gridmap.set_value(x_size - 1, i, 10000.0)
print "x_size", x_size, x_size * 0.1
print "y_size", y_size, y_size * 0.1
for i in range(x_size):
for j in range(y_size):
if (mod(j, 5) == 0 and abs(i - 150) > 30):
gridmap.set_value(i, j, 10000.0)
return gridmap
def forward_prop(X):
def forward(X, theta):
m = X.shape[0]
X = sp.hstack((sp.ones((m, 1)), X))
return sigmoid(X * theta.T)
return lambda *thetas: sp.mod(sp.argmax(reduce(forward, thetas, X), axis=1)+1, 10)
def update_rho(self, k, r, s):
"""Automatic rho adjustment."""
if self.opt['AutoRho', 'Enabled']:
tau = self.rho_tau
mu = self.rho_mu
xi = self.rho_xi
if k != 0 and scipy.mod(k + 1, self.opt['AutoRho', 'Period']) == 0:
if self.opt['AutoRho', 'AutoScaling']:
if s == 0.0 or r == 0.0:
rhomlt = tau
else:
rhomlt = scipy.sqrt(r / (s * xi) if r > s *
xi else (s * xi) / r)
if rhomlt > tau:
rhomlt = tau
else:
rhomlt = tau
rsf = 1.0
if r > xi * mu * s:
rsf = rhomlt
elif s > (mu / xi) * r:
rsf = 1.0 / rhomlt
self.rho = self.dtype.type(rsf * self.rho)
self.U /= rsf
if rsf != 1.0:
self.rhochange()
def preprocessing(self,
signal,
time=None,
samplingRate=None,
channel=None):
# Defining EEG filters
order = int(min(3003, len(signal) - 3) / 3)
bandPassFilter = Filter(samplingRate)
bandPassFilter.create(low_crit_freq=self.lowFreq,
high_crit_freq=self.highFreq,
order=order,
btype="bandpass",
ftype="FIR",
useFiltFilt=True)
# filtering can take a lot of memory. By making sure that the
# garbage collector as passed just before the filtering, we
# increase our chances to avoid a MemoryError
gc.collect()
signal = bandPassFilter.applyFilter(signal)
################################# RMS COMPUTATION #####################
windowNbSample = int(round(self.averagingWindowSize * samplingRate))
if mod(windowNbSample, 2) == 0: # We need an odd number.
windowNbSample += 1
return self.averaging(np.abs(signal), windowNbSample)
def compute_emperical_feature_counts(self):
self.fc_obs = zeros(self.get_num_features_obs())
self.fc_trans = zeros(self.get_num_features_trans())
#self.fc_obs_all = zeros([len(self.D.observations), self.get_num_features_obs()])
#self.fc_trans_all = zeros([len(self.D.observations), self.get_num_features_trans()])
for k, d in enumerate(self.D.observations):
if(mod(k, 10000) == 0):
print k, 'of', len(self.D.observations)
for i in range(len(d.observations)):
#print "starting"
for a in self.D.get_output_alphabet():
if(d.features_obs.has_key(a) and d.features_obs[a][i] == None):
d.features_obs[a][i] = self.f_obs(a, d.observations[i])
#print "caching:", a, i, self.f_obs(a, d.observations[i]), d.observations[i]
#cache the transition probabilities as well
for b in self.D.get_output_alphabet():
if(d.features_trans.has_key(a)
and d.features_trans[a].has_key(b)
and d.features_trans[a][b][i] == None):
d.features_trans[a][b][i] = self.f_trans(a, b, d.observations[i])
features_obs = d.features_obs[d.labels[i]][i]
self.fc_obs += features_obs
#self.fc_obs_all[k] += features_obs
if(i != 0):
features_trans = self.f_trans(d.labels[i-1], d.labels[i], d.observations[i])
self.fc_trans += features_trans
def DoQuestion3():
fig = mp.figure()
ax = mp.subplot(111)
elpsilon = 0.05
d_vc = 10
x = []
y = []
loop = 0
var = 1000
for N in range(10000000):
if scipy.mod(N, 100) == 5:
var = var * 3
loop += 1
value = 4 * ((2 * N)**d_vc) * math.exp(-(elpsilon**2) * N / 8)
if (1 == loop):
lastValue = value
x.append(N)
y.append(value)
print(value - 0.05, lastValue - 0.05)
if scipy.sign(value - 0.05) != scipy.sign(lastValue - 0.05):
print(scipy.sign(value - 0.05), scipy.sign(lastValue - 0.05))
break
lastValue = value
z1 = np.array(x)
z2 = np.array(y)
ax.plot(z1[:], z2[:], '*', label='$y = Value$')
#top = 10**10
#ax.set_ylim(0,top)
mp.title('Visualization of Dataset')
ax.legend(loc='upper left', fontsize='small')
fig.show()
def initial_bearing(lon1, lat1, lon2, lat2):
'''Initial bearing when traversing from point1 (lon1, lat1)
to point2 (lon2, lat2)
See http://www.movable-type.co.uk/scripts/latlong.html
Parameters
----------
lon1, lat1 : float
longitude and latitude of start point
lon2, lat2 : float
longitude and latitude of end point
Returns
-------
initial_bearing : float
The initial bearing (azimuth direction) when heading out
from the start point towards the end point along a great circle.
'''
rlon1 = np.radians(lon1)
rlat1 = np.radians(lat1)
rlon2 = np.radians(lon2)
rlat2 = np.radians(lat2)
bearing = np.arctan2(
np.sin(rlon2 - rlon1) * np.cos(rlat2),
np.cos(rlat1) * np.sin(rlat2) -
np.sin(rlat1) * np.cos(rlat2) * np.cos(rlon2 - rlon1))
return mod(np.degrees(bearing) + 360, 360)
def compute_log_gradient(self, theta):
self.W_obs = theta[0:len(self.W_obs)]
self.W_trans = theta[len(self.W_obs):]
f_obs_exp = zeros(len(self.W_obs))
f_trans_exp = zeros(len(self.W_trans))
for i, d in enumerate(self.D.observations):
if (mod(i + 1, 200) == 0):
print i, "grad. of", len(self.D.observations)
f_obs_e, f_trans_e = self.compute_expected_feature_count(d)
f_obs_exp += f_obs_e
f_trans_exp += f_trans_e
obs_grad = self.fc_obs - f_obs_exp
trans_grad = self.fc_trans - f_trans_exp
ret_val = []
ret_val.extend(obs_grad)
ret_val.extend(trans_grad)
ret_val = array(ret_val)
#because we're minimizing the negative log likelihood
ret_val *= -1.0
ret_val += theta / (self.sigma**2.0)
print "max", amax(ret_val)
i = argmax(obs_grad)
print "diff:", obs_grad[i], " features:", self.fc_obs[
i], " expectation:", f_obs_exp[i]
return ret_val
def preprocessing(self,
signal,
time=None,
samplingRate=None,
channel=None):
# Defining EEG filters
order = int(min(3003, len(signal) - 3) / 3)
bandPassFilter = Filter(samplingRate)
bandPassFilter.create(low_crit_freq=self.lowFreq,
high_crit_freq=self.highFreq,
order=order,
btype="bandpass",
ftype="FIR",
useFiltFilt=True)
# filtering can take a lot of memory. By making sure that the
# garbage collector as passed just before the filtering, we
# increase our chances to avoid a MemoryError
gc.collect()
signal = bandPassFilter.applyFilter(signal)
################################# RMS COMPUTATION #####################
windowNbSample = int(round(self.averagingWindowSize * samplingRate))
if mod(windowNbSample, 2) == 0: # We need an odd number.
windowNbSample += 1
# For selecting samples using a quantile-based thresholds, using abs(X)
# or X**2 to rectify the X signal will give exactly the same result
# since X**2 eqauls abs(X)**2 (for real numbers) and the transformation
# from abs(X) to abs(X)**2 is monotonically increasing, meaning that
# rank based statistics (such as quatiles) will give exactly the same
# result. We use the numpy implementation of abs() because it is the
# faster alternative.
return np.sqrt(self.averaging(signal**2.0, windowNbSample))
def bin(self, n=None):
"""
Bin a square array by grouping nxn pixels.
Array size must be a multiple of n.
"""
if n is None:
n = CXP.preprocessing.bin
# Now the detector pixel size has changed so we should update that
CXP.experiment.dx_d *= n
CXP.log.info(
'After binning new detector pixel size: {2.2e}'.format(
CXP.experiment.dx_d))
nx, ny = self.data[0].shape[0], self.data[0].shape[1]
if not nx == ny:
raise Exception('Array to be binned must be square')
if not sp.mod(nx, n) == 0.:
raise Exception('Array size must be a multiple of binning factor')
if n > nx:
raise Exception('Binning factor must be smaller than array size')
nn = nx / n
l = []
for i in xrange(len(self.data)):
tmp = sp.zeros((nn, nn))
for p in xrange(nn):
for q in xrange(nn):
tmp[p, q] = sp.sum(self.data[i][p * n:(p + 1) * n,
q * n:(q + 1) * n])
l.append(tmp)
self.data = l
def preprocessing(self,
signal,
time=None,
samplingRate=None,
channel=None):
#fileName = self.reader.getFileName() + "_RSP_" + channel + "_" + str(time[0]) + ".mat"
N = len(signal)
"""
if os.path.exists(fileName):
print "Using saved RSP..."
self.RSP = loadmat(fileName)["RSP"]
self.RSP = self.RSP.reshape(self.RSP.size)
assert(len(signal) == len(self.RSP))
else:
"""
self.RSP = zeros(N)
nbPad = int(0.1 * samplingRate)
nbWin = int(4.0 * samplingRate)
nbIter = int(N / nbWin)
for i in range(nbIter):
if mod(i, 1000) == 0: print((i, nbIter))
if i == 0: # First iteration
indexes = arange(nbPad + nbWin)
elif i == nbIter - 1: # Last iteration
indexes = arange(i * nbWin - nbPad, N)
else: # Other iterations
indexes = arange(i * nbWin - nbPad, i * nbWin + nbWin + nbPad)
#if any(stageIndicator[indexes]):
X, fX = computeST(signal[indexes],
samplingRate,
fmin=0.5,
fmax=40.0)
if i == 0: # First iteration
indexesNoPad = arange(nbWin)
elif i == nbIter - 1: # Last iteration
indexesNoPad = arange(nbPad, nbPad + N - i * nbWin)
else: # Other iterations
indexesNoPad = arange(nbPad, nbPad + nbWin)
X = abs(X[indexesNoPad])
indexes = indexes[indexesNoPad]
spindleBand = (fX >= self.lowFreq) * (fX <= self.highFreq)
self.RSP[indexes] = trapz(X[:, spindleBand],
fX[spindleBand],
axis=1) / trapz(X, fX, axis=1)
#else:
# self.RSP[indexes] = 0.0
# assert(len(signal) == len(self.RSP))
# savemat(fileName, {"RSP":self.RSP})
return self.RSP
def _make_strel(self, r):
D = 2 * sp.ceil(r)
if sp.mod(D, 2) == 0:
D += 1
strel = sp.ones((D, D, D))
strel[D / 2, D / 2, D / 2] = 0
strel = spim.distance_transform_bf(strel) <= r
return strel
def _get_coefmat(self, rpfldin, vlabel):
fmax = np.amax(np.absolute(rpfldin))
rpfld = rpfldin / fmax
coefmat = []
nr = self.nrad
nph = self.nphi
n = self.orad
m = self.ophi
X = np.linspace(1.0 / float(nr), 1.0, nr)
Y = np.zeros(nr)
for i in xrange(nr):
for j in xrange(nph):
Y[i] += rpfld[i, j] / float(nph)
P = np.polyfit(X, Y, n)
Padj = np.zeros(n + 1)
for i in range(n + 1):
Padj[i] = P[n - i]
coefmat.append(Padj.copy())
for mi in xrange(m):
Y = np.zeros(nr)
if np.mod(mi + 1, 2) == np.mod(vlabel - 1, 2):
for i in xrange(nr):
for j in xrange(nph):
Y[i] += np.cos(
2.0 * np.pi * (mi + 1) * (j + 1) /
float(nph)) * rpfld[i, j] * 2.0 / float(nph)
elif np.mod(mi + 1, 2) == np.mod(vlabel, 2):
for i in xrange(nr):
for j in xrange(nph):
Y[i] += np.sin(
2.0 * np.pi * (mi + 1) * (j + 1) /
float(nph)) * rpfld[i, j] * 2.0 / float(nph)
P = np.polyfit(X, Y, n)
for i in xrange(n + 1):
Padj[i] = P[n - i]
coefmat.append(Padj.copy())
coefmat = np.transpose(np.array(coefmat))
return fmax, coefmat
def create_split(all_images, conf):
temp = mod(arange(len(all_images)), conf.imagesperclass) < conf.numTrain
selTrain = where(temp == True)[0]
selTest = where(temp == False)[0]
# the '[0]' is there, because 'where' returns tuples, don't know why....
# the use of the 'temp' variable is not pythonic, but we need the indices
# not a boolean array. See Matlab code
return selTrain, selTest
def watts_hex(Ny, Nx, pr=0.5):
Gs = nx.Graph()
Gs.add_nodes_from(range(0, Nx * Ny), state=1.0)
for iy in range(0, Ny):
for ix in range(0, Nx):
ni = iy * Nx + ix
nj1 = iy * Nx + sp.mod(ix + 1, Nx)
nj2 = sp.mod(iy + 1, Ny) * Nx + ix
nj3 = sp.mod(iy + 1, Ny) * Nx + sp.mod(ix + 1, Nx)
Gs.add_edges_from(((ni, nj1), (ni, nj2), (ni, nj3)), weight=1.0)
nx.double_edge_swap(Gs, nswap=int(pr * Nx * Ny * 3), max_tries=10000)
##remove self-edges
Gs.remove_edges_from(Gs.selfloop_edges())
return Gs
def __init__(self, dim, obs, params=None, E=None):
# - dim (2d tuple): dimensionality of each view
# - obs (ndarray): observed data
# - E (ndarray): initial expected value of pseudodata
PseudoY_Seeger.__init__(self, dim=dim, obs=obs, params=params, E=E)
# Initialise the observed data
assert s.all(s.mod(self.obs, 1) == 0), "Data must not contain float numbers, only integers"
assert s.all(self.obs >= 0), "Data must not contain negative numbers"
def phiktrans(kx, ky, qx, qy, p, r=sc.zeros((1, 2))):
"""
Returns phi[k,r] such that |q,r>=sum_k phi[k,r]|q,k>
"""
kqx = kx - qx
kqy = ky - qy
pk = sc.zeros((sc.shape(kx)[0], sc.shape(r)[0]), complex)
pke=sc.conj(uk(kx,ky,1,1,p))*uk(kqx,kqy,-1,-1,p)+\
sc.conj(vk(kx,ky,1,1,p))*vk(kqx,kqy,-1,-1,p)
pko=sc.conj(vk(kx,ky,1,1,p))*uk(kqx,kqy,-1,-1,p)+\
sc.conj(uk(kx,ky,1,1,p))*vk(kqx,kqy,-1,-1,p)
even = 1 - sc.mod(r[:, 0] + r[:, 1], 2)
odd = sc.mod(r[:, 0] + r[:, 1], 2)
ph = sc.exp(-2j * sc.pi * (sc.einsum('i,j->ij', kx, r[:, 0]) +
sc.einsum('i,j->ij', ky, r[:, 1])))
pk = sc.einsum('ij,j,i->ij', ph, even, pke) + sc.einsum(
'ij,j,i->ij', ph, odd, pko)
return pk
def nearnei_regular(N, nnei, dnei):
G = nx.Graph()
for n in range(0, N):
G.add_node(n, state=1.0, xloc=n, yloc=0)
for n in range(0, N):
for j in range(1, nnei + 1):
G.add_edge(n, sp.mod(n + dnei * j, N), weight=1.0)
return G
def getCharge(self, t):
conditions = sp.mod(
t, self.tBunchSpacing
) < 2 * self.bunchLengthLimitSigma * self.tBunchLengthSigma
if conditions:
tRed = sp.mod(t, self.tBunchSpacing)
temp = sps.norm.cdf(
sp.clip(
(tRed + self.dt / 2.) / self.tBunchLengthSigma -
self.bunchLengthLimitSigma, -self.bunchLengthLimitSigma,
self.bunchLengthLimitSigma)) - sps.norm.cdf(
sp.clip(
(tRed - self.dt / 2.) / self.tBunchLengthSigma -
self.bunchLengthLimitSigma,
-self.bunchLengthLimitSigma,
self.bunchLengthLimitSigma))
return temp * self.nParticles / self.dt / self.beamVelocity * self.charge * self.qTransversalProfile
else:
return 0
def set_pole(self, num=1, ells=[0, 2, 4, 6, 8, 10, 12]):
nells = len(ells)
if (scipy.mod(ells, 2) == 0).all():
ells = scipy.arange(nells) * 2
multitype = 'even'
elif (scipy.mod(ells, 2) == 1).all():
ells = 1 + scipy.arange(nells) * 2
multitype = 'odd'
else:
ells = scipy.arange(nells)
multitype = 'all'
self.anacorr.set_pole.argtypes = (ctypes.c_size_t, ctypes.c_char_p,
ctypes.c_size_t)
self.anacorr.set_pole(num, multitype.encode('utf-8'), nells)
self._ells[num] = ells.tolist()
return list(self._ells[num])
def _do_one_outer_iteration(self):
r"""
One iteration of an outer iteration loop for an algorithm
(e.g. time or parametric study)
"""
if (sp.mod(self._counter,500)==False):
self._logger.info("Outer Iteration (counter = "+str(self._counter)+")")
self._do_inner_iteration_stage()
self._condition_update()
self._counter += 1
def __init__(self):
self.landmarks = []
#cache landmark context
self.landmark_context = collections.defaultdict(lambda : set())
for i in range(len(self.landmarks)):
if(mod(i, 50) == 0):
print i, "of", len(self.landmarks)
self._get_landmark_context(i)
def gen_data(self, add_noise=False):
cpi_start = 0
time = 0
prf = self.prf # will become vector
range_unam = const.c0 / prf / 2
tcpi = 1 / prf
rng_window = sp.array([0., range_unam])
fast_time = rng_window // const.c0 * 2
ft_axis = sp.arange(fast_time[0], fast_time[1], 1 / (2 * self.bandw))
numbins = ft_axis.size
rng_axis = sp.linspace(0, numbins, rng_window[1])
p_data = sp.zeros((numbins, self.npri))
self.data = sp.zeros((self.ncpi, numbins, self.npri))
for i in range(1, self.ncpi):
'''
This will loop to create data for each CPI, the first section will
create vectors for the radar attributes that aligns with the data
it is collected from
'''
for p in range(0, self.npri):
time = (p) * tcpi
# itarget in range(0,len(target_range)): # this when I get to multiple targets
range_new = self.target_range + self.target_radvel
# The '1' will be replaced with a power calculation in future
tmp_array = 1 * self.pulse * sp.exp(
sp.sqrt(-1) * 2 * sp.pi *
(sp.arange(0, len(self.pulse)) / self.fs + time) * 2 *
self.target_radvel / (const.c0 / self.freq))
'''
Insert generated data into appropriate 'bins'
Each i loop goes into it's own MxN matrix and is stacked in a 3rd dim
making it (rng x dop x cpi). The tmp_array calculates the value of the target
while the indexing below slots it into the correct dopper bins. The range binning is taken care of by the
the pri loop.
'''
index1 = round(
sp.mod(range_new,
rng_window[1] / (rng_window[1] * (numbins)) + 1))
print(index1)
index2 = index1 + min(len(self.ts - 1), numbins - index1)
print(index2)
index_size = sp.arange(index1, index2 + 1)
print(index_size)
rev_tmp = tmp_array[0:len(index_size)]
print(rev_tmp)
p_data[p, index_size] = p_data[p, index_size] + rev_tmp[::-1]
# add noise here
#if add_noise is True:
# p_data[p, :] = p_data[p, :]
cpi_start = cpi_start + time + tcpi + 1 / self.fs
# Save a map for RDMap for every CPI. Structured Array
self.data[i - 1] = p_data
return self.data
def _rebuild_fld(self, coefmat, emax, vlabel):
nr = self.nrad
nph = self.nphi
remap = np.zeros((nr, nph))
n, m = coefmat.shape
R = np.zeros(n)
Phi = np.zeros(m)
for i in xrange(nr):
for j in xrange(nph):
for ni in xrange(n):
R[ni] = np.power(float(i + 1) / float(nr), ni)
for mi in xrange(m):
if np.mod(mi, 2) == np.mod(vlabel - 1, 2):
Phi[mi] = np.cos(2.0 * np.pi * mi * (j + 1) /
float(nph))
elif np.mod(mi, 2) == np.mod(vlabel, 2):
Phi[mi] = np.sin(2.0 * np.pi * mi * (j + 1) /
float(nph))
remap[i, j] = emax * R.dot(coefmat.dot(Phi))
return remap