def get_rbratios_tohoku(mc=5.0, todt=mhp.dtm.datetime.now(mhp.pytz.timezone('UTC')), winlen=None, avlen=None, targmag=9.0, ndithers=10, nContours=nContours1, bigmag=7.0, lons=[135., 148.5], lats=[30., 45.25], refreshcat=True, dt0=mhp.dtm.datetime(1990,1,1, tzinfo=mhp.pytz.timezone('UTC')), catname='cats/tohoku_rfits.cat', mt=7.6):
#
# fetch and return a standard rb-ratio set.
#
if refreshcat==True:
#cl1=yp.catfromANSS(lon=[92.0, 106.0],lat=[-9.0, 10.0], minMag=3.5, dates0=[yp.dtm.datetime(1990,1,1, tzinfo=pytz.timezone('UTC')), yp.dtm.datetime(2012,6,19, tzinfo=pytz.timezone('UTC'))], fout=catname)
cl1=atp.catfromANSS(lon=lons,lat=lats, minMag=mc, dates0=[dtm.datetime(1990,1,1, tzinfo=pytz.timezone('UTC')), dtm.datetime.now(pytz.timezone('UTC'))], fout=catname)
#
plt.figure(1)
plt.clf()
c1=eqp.eqcatalog([])
c1.mt=mt
c1.loadCatFromFile(catname)
c1.cat.sort(key = lambda x:x[0])
dlambda=1.76
N_sequence = rfp.getNofm(targmag, mc)
if avlen==None: avlen = max(1,int(N_sequence/10))
tohokuEvent=c1.getMainEvent()
print "n_seq: %d" % N_sequence
tohokuLatLon = tohokuEvent[1], tohokuEvent[2]
Lr = 10.0**(.5*targmag - 1.76)
lfactor=.5
#
c1.subcats+=[['r1', rfp.circularcat(c1.getcat(0), latlon=[tohokuEvent[1], tohokuEvent[2]], Rkm=Lr*lfactor)]]
#
#rbratios = c1.plotIntervalRatiosAx(winlen=N_sequence, cat=c1.getcat(1), hitThreshold=1.0, bigmag=9.0, thisAx=myaxes[i], ratios=None, delta_t=1, avlen=rbavelen, mainEv=mainshock, logZ=None, rbLegLoc=0, reverse=False)
rbratios = c1.plotIntervalRatiosAx(winlen=N_sequence, cat=c1.getcat(1), hitThreshold=1.0, bigmag=9.0, thisAx=None, ratios=None, delta_t=1, avlen=avlen, mainEv=tohokuEvent, logZ=None, rbLegLoc=0, reverse=False)
plt.figure(1)
log_fact = math.log10(N_sequence)
#
#plt.plot(map(operator.itemgetter(0), rbratios), map(operator.itemgetter(5), rbratios), '-')
plt.semilogy(map(operator.itemgetter(1), rbratios), [x[4]*1.0 for x in rbratios], 'k-', alpha=.8, zorder=11)
return rbratios
def rtree_test1(lons=[-124., -114.], lats=[30., 41.5], mc=3.0): # # get an earthquake catalog from ANSS: # def catfromANSS(lon=[135., 150.], lat=[30., 41.5], minMag=4.0, dates0=[dtm.datetime(2005,01,01, tzinfo=tzutc), None], Nmax=None, fout=None, rec_array=True): anss_cat = atp.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=[dtm.datetime(2000,01,01, tzinfo=atp.tzutc), None], Nmax=None, fout=None, rec_array=True) # #return anss_cat # now, set up an index. do we need a bunch of indices, or is that the whole point of this? # idx = index.Index() # our bounding box: left,bottom,right,top = lons[0], lats[0], lons[1], lats[1] bounds = (left, bottom, right, top) # # now, insert all item indices from anss_cat into idx. nominally, we could insert the row as an object, or an index as an object... or we can synch the id with the # row index, and use the id as the index. note we insert elements as points, with left=right, top=bottom. [idx.insert(j, (rw['lon'], rw['lat'], rw['lon'], rw['lat'])) for j,rw in enumerate(anss_cat)] # # now, how 'bout find each point's NN: NN_1s=[list(idx.nearest((rw['lon'], rw['lat'], rw['lon'], rw['lat']),1)) for j,rw in enumerate(anss_cat)] NN_2s=[list(idx.nearest((rw['lon'], rw['lat'], rw['lon'], rw['lat']),2)) for j,rw in enumerate(anss_cat)] # idx2 = index.Index() idx2.insert(0, (0.,0.,1.,1.)) idx2.insert(1, (1.5,.5,1.5,.5)) # point at 1.5,.5 idx2.insert(2, (.5, 1.5, .5, 1.5)) # point at .5, 1.5 # # note, if we are looking for NNs to an object in the database (index), it will find itself first. this is not "find the NNs of object X in the index"; # the object/window is independent and external. print "indersections: ", list(idx2.intersection((0.,0.,1.,1.))) print "NNs: : ", list(idx2.nearest((0.,0.,1.,1.),2)) # return NN_1s, NN_2s
def pull_region_history(lon_range,
lat_range,
mc=4.5,
date_range=['1990-1-1', None]):
minlon = lon_range[0]
maxlon = lon_range[1]
minlat = lat_range[0]
maxlat = lat_range[1]
if date_range[1] == None:
date_range[1] = dtm.datetime.now(pytz.timezone('UTC'))
#
for j, dt in enumerate(date_range):
if isinstance(dt, str):
date_range[j] = mpd.num2date(mpd.datestr2num(dt))
#
#
start_date = date_range[0]
end_date = date_range[1]
incat = atp.catfromANSS(lon=[minlon, maxlon],
lat=[minlat, maxlat],
minMag=mc,
dates0=[start_date, end_date],
Nmax=None,
fout=None,
rec_array=True)
return incat
def nepal_bm_decorator(cm=None, prams = nepal_ETAS_prams, fnum=0, map_res='i', big_mag=6.28, hours_after=None, **kwargs):
cm = (cm or nepal_basemap())
prams.update(kwargs)
#
lons_nepal = [83., 87.]
todt=prams.get('todt', None)
catlen=prams.get('catlen', 5.*365.)
lons=prams['lons']
lats=prams['lats']
mc = prams['mc']
#
if todt==None: todt = dtm.datetime.now(pytz.timezone('UTC'))
dt0 = todt - dtm.timedelta(days=catlen)
# get a catalog:
cat_0 = atp.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=[dt0, todt], fout=None, rec_array=True)
#print cat_0[0:5]
#print list(cm(cat_0[0][2], cat_0[0][1]))
quakes_map = [[rw[0]] + list(cm(rw[2], rw[1])) + [rw[3]] for rw in cat_0]
max_mag = max([m for m in zip(*cat_0)[3]])
print("max magnitude: ", max_mag)
for rw in cat_0:
if rw[3]==max_mag:
mainshock = rw
break
# make a datetime type for mainshock:
mainshock_dtm = numpy_date_to_datetime(mainshock[0])
if hours_after!=None:
time_after = dtm.timedelta(hours=hours_after)
else:
time_after = my_now()-mainshock_dtm
#
cat_big = [x for x in cat_0 if (x[3]>big_mag and x[0]>mainshock[0] and x!=mainshock)] # just big aftershocks...
#
plt.plot([mainshock[2]], [mainshock[1]], 'r*', ms=17, zorder=6)
plt.plot([mainshock[2]], [mainshock[1]], 'k*', ms=20, zorder=5)
plt.plot(*list(zip(*[[rw[1], rw[2]] for rw in quakes_map if rw[0]<mainshock[0]])), marker='o', ms=5, ls='', color='r', zorder=5, label='befores')
#
plt.plot(*list(zip(*[[rw[1], rw[2]] for rw in quakes_map if (rw[0]>mainshock[0] and rw[0]<mainshock[0].tolist()+time_after)])), marker='o', ls='', ms=5, color='b', zorder=5, label='afters')
#
# ... and the big ones:
for rw in cat_big:
print(rw)
dt=rw[0].tolist()
#
plt.plot([rw[2]], [rw[1]], 'o', ms=15.*(rw[3]/8.), label='m=%.2f, %d/%d' % (rw[3], dt.month, dt.day), zorder=6, alpha=.6)
#
plt.legend(loc=0, numpoints=1)
return cm
def mpi_cat(lons=[-123., -114.], lats=[31.5, 43.], mc=2.5, date_range=None, cat_len=10.*365.25):
#
date_range = (date_range or [None, None])
date_range[0] = (date_range[0] or dtm.datetime.now(pytz.timezone('UTC'))-dtm.timedelta(days=cat_len))
date_range[1] = (date_range[1] or dtm.datetime.now(pytz.timezone('UTC')))
#
#
cat0 = atp.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=date_range, Nmax=None, fout=None, rec_array=True)
#
# but for now, something simpler...
n_cpu = mpp.cpu_count()
ary = mpp.Array(list(range(10*n_cpu)))
#
return cat0
def rtree_test2(lons=[-124., -114.], lats=[30., 41.5], anss_cat=None, mc=3.0):
#
# get an earthquake catalog from ANSS:
# def catfromANSS(lon=[135., 150.], lat=[30., 41.5], minMag=4.0, dates0=[dtm.datetime(2005,01,01, tzinfo=tzutc), None], Nmax=None, fout=None, rec_array=True):
# use rtree index to select objects (earthquakes) from a geo-spatial region.
# note also nearest-neighbor test script(s).
if anss_cat==None: anss_cat = atp.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=[dtm.datetime(2000,01,01, tzinfo=atp.tzutc), None], Nmax=None, fout=None, rec_array=True)
cols, formats = [list(x) for x in zip(*anss_cat.dtype.descr)]
#
print "catalog fetched. now set up index..."
#
#return anss_cat
# now, set up an index. do we need a bunch of indices, or is that the whole point of this?
#
idx = index.Index()
# our bounding box:
left,bottom,right,top = lons[0], lats[0], lons[1], lats[1]
bounds = (left, bottom, right, top)
#print "bounds: ", bounds
#return anss_cat
#
# now, insert all item indices from anss_cat into idx. nominally, we could insert the row as an object, or an index as an object... or we can synch the id with the
# row index, and use the id as the index. note we insert elements as points, with left=right, top=bottom.
[idx.insert(j, (rw['lon'], rw['lat'], rw['lon'], rw['lat'])) for j,rw in enumerate(anss_cat)]
#
# now, we can use idx to get the index (row number) of elements inside some bounding rectangle like (i think):
# note: height, width, etc. have to be defined. this is basically pseudo-code at this point.
ev_x = numpy.mean(lons)
ev_y = numpy.mean(lats)
zone_width = .3*abs(lons[1]-lons[0])
zone_height = .3*abs(lats[1]-lats[0])
print "mean position: ", ev_x, ev_y, zone_width, zone_height
#
event_neighbor_indices = list(idx.intersection((ev_x-zone_width, ev_y-zone_height, ev_x + zone_width, ev_y+zone_height)))
event_neighbors = [anss_cat[j] for j in event_neighbor_indices]
lat_index = cols.index('lat')
lon_index = cols.index('lon')
#
zone_box = [[ev_x-zone_width, ev_y-zone_height],[ev_x+zone_width, ev_y-zone_height], [ev_x+zone_width, ev_y+zone_height], [ev_x-zone_width, ev_y+zone_height], [ev_x-zone_width, ev_y-zone_height]]
#
plt.figure(0)
plt.clf()
plt.plot(anss_cat['lon'], anss_cat['lat'], '.', color='b')
plt.plot(*zip(*zone_box), color='g', ls='--', lw=1.5, alpha=.8)
plt.plot(*zip(*[[anss_cat[k][lon_index], anss_cat[k][lat_index]] for k in event_neighbor_indices]), marker = '+', ls='', color='g', alpha=.7)
plt.plot([ev_x], [ev_y], '*', ms=15, color='r')
#
return anss_cat, idx
def __init__(self, lat_min=31., lat_max=42., lon_min=-125., lon_max=-115., mc=3.0, grid_dx=10., grid_dy=10., grid_units='km', date_min=dtm.datetime(1990,1,1, tzinfo=pytz.timezone('UTC')), date_max=None, N_max=None, cat_out_file=None):
# make a lattice of grid sites (really points with some spacing; for now, assume rectalinearly equal spacing).
# get a catalog of earthquakes; create an auxilary catalog as well.
#
self.lat_min=lat_min
self.lat_max=lat_max
self.lon_min=lon_min
self.lon_max=lon_max
self.mc=mc
self.grid_dx = grid_dx
self.grid_dy = grid_dy
self.grid_units=grid_units
self.date_min=date_min
self.date_max=date_max # note: these may differ from the values in the catalog, so we might want to write some code/commentary to be specific.
self.N_max=N_max
self.cat_out_file=cat_out_file
#
self.catalog = atp.catfromANSS(lon=[lon_min, lon_max], lat=[lat_min, lat_max], minMag=mc, dates0=[date_min, date_max], Nmax=N_max, fout=cat_out_file, rec_array=True)
def pull_region_history(lon_range, lat_range, mc=4.5, date_range=['1990-1-1', None]):
minlon = lon_range[0]
maxlon = lon_range[1]
minlat = lat_range[0]
maxlat = lat_range[1]
if date_range[1]==None: date_range[1] = dtm.datetime.now(pytz.timezone('UTC'))
#
for j,dt in enumerate(date_range):
if isinstance(dt, str):
date_range[j] = mpd.num2date(mpd.datestr2num(dt))
#
#
start_date = date_range[0]
end_date = date_range[1]
incat = atp.catfromANSS(lon=[minlon, maxlon], lat=[minlat, maxlat], minMag=mc, dates0=[start_date, end_date], Nmax=None, fout=None, rec_array=True)
return incat
def __init__(self,
lat_min=31.,
lat_max=42.,
lon_min=-125.,
lon_max=-115.,
mc=3.0,
grid_dx=10.,
grid_dy=10.,
grid_units='km',
date_min=dtm.datetime(1990, 1, 1,
tzinfo=pytz.timezone('UTC')),
date_max=None,
N_max=None,
cat_out_file=None):
# make a lattice of grid sites (really points with some spacing; for now, assume rectalinearly equal spacing).
# get a catalog of earthquakes; create an auxilary catalog as well.
#
self.lat_min = lat_min
self.lat_max = lat_max
self.lon_min = lon_min
self.lon_max = lon_max
self.mc = mc
self.grid_dx = grid_dx
self.grid_dy = grid_dy
self.grid_units = grid_units
self.date_min = date_min
self.date_max = date_max # note: these may differ from the values in the catalog, so we might want to write some code/commentary to be specific.
self.N_max = N_max
self.cat_out_file = cat_out_file
#
self.catalog = atp.catfromANSS(lon=[lon_min, lon_max],
lat=[lat_min, lat_max],
minMag=mc,
dates0=[date_min, date_max],
Nmax=N_max,
fout=cat_out_file,
rec_array=True)
def gr_thing(lats=[31., 43.], lons=[-126., -114.], mc=3.0, t0=dtm.datetime(1990,1,1, tzinfo=pytz.timezone('UTC')), t1=dtm.datetime.now(pytz.timezone('UTC')), m0=6.0, b0=1.0):
N0=1000.
cat = ANSStools.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=[t0, t1], Nmax=None, fout=None, rec_array=True)
#
# nominally, we'd get some sort of spatial subcats, but we won't bother just yet.
# now, get subcats between each of the m>m_0 events; plot, fit, etc.
#
my_axes = []
for fnum in range(4):
plt.figure(fnum)
plt.clf()
my_axes += [plt.gca()]
if fnum<2: my_axes[-1].set_yscale('log')
b=b0 # though later, we might fit this
#
#for best speed and memory performance, we should just walk through this, but this will be easier to code:
#
m_index = [[j,m] for j,m in enumerate(cat['mag']) if m>=m0]
abmag = []
#
for j,rw in enumerate(m_index[1:]):
# color for plotting (optinal):
this_color = colors_[j%len(colors_)]
#
these_mags = sorted(cat['mag'][m_index[j][0]+1:rw[0]].copy())
#
if len(these_mags)<2:
print("insufficient sequence length: %d" % len(these_mags))
continue
#
these_mags.reverse()
Ns = numpy.arange(1., len(these_mags)+1, 1.)
my_axes[0].plot(these_mags, Ns, 'o-')
#
# now, scale these for stacking. scale counts to m0.
m_start = cat['mag'][m_index[j][0]]
m_stop = cat['mag'][rw[0]]
m_mean = .5*(m_start+m_stop)
#
#Ns_prime = [n*(10.**(b*(m0-m))) for n,m in zip(Ns, these_mags)]
#Ns_prime = [n*(10.**(b*(m0-m_mean))) for n,m in zip(Ns, these_mags)]
Ns_prime = [n*Ns[0]/Ns[-1] for n in Ns]
delta_log_ratio = abs(math.log10(Ns_prime[0]/Ns_prime[-1]))/math.log10(Ns[-1])
ms_prime = [m*delta_log_ratio for m in these_mags]
#my_axes[1].plot(these_mags, Ns_prime, '.-')
my_axes[1].plot(ms_prime, Ns_prime, '.-')
#
# fit for b values:
#print "len[%d]: (%d/%d:%f): %d " % (j, m_index[j][0], rw[0], rw[1], len(these_mags))
#
fits = numpy.linalg.lstsq(numpy.array([[m,1.0] for m in these_mags]), numpy.log10(Ns))[0]
print("fits: ", fits[0])
abmag += [[fits[1], fits[0], m_index[j][1], rw[1]]]
#
my_axes[2].plot([m_index[j][1], rw[1]], [fits[1], fits[1]], 'o-', color=this_color)
#my_axes[2].plot([fits[1]], [rw[1]], 'o', color=this_color)
#
my_axes[3].plot([m_index[j][1], rw[1]], [fits[0], fits[0]], 'o-', color=this_color)
#my_axes[3].plot([fits[0]], [rw[1]], 'o', color=this_color)
#
print("b-values:\n median: %f, mean: %f \\pm %f" % (numpy.median([rw[1] for rw in abmag]), numpy.mean([rw[1] for rw in abmag]), numpy.std([rw[1] for rw in abmag])))
#
plt.figure(2)
#plt.clf()
#plt.plot(*zip(*[[rw[0], rw[2]] for rw in abmag]), marker='o', ls='')
#plt.plot(*zip(*[[rw[0], rw[3]] for rw in abmag]), marker='o', ls='')
plt.ylabel('a-val')
plt.xlabel('magnitude $m$')
plt.figure(3)
#plt.clf()
#plt.plot(*zip(*[[rw[1], rw[2]] for rw in abmag]), marker='o', ls='')
#plt.plot(*zip(*[[rw[1], rw[3]] for rw in abmag]), marker='o', ls='')
plt.ylabel('b-val')
plt.xlabel('magnitude $m$')
ax_bcdf = my_axes[3].twiny()
bs = [rw[1] for rw in abmag]
bs.sort()
ax_bcdf.plot(range(1,len(bs)+1), bs, 's-', lw=2, alpha=.7)
ax_bcdf.set_ylabel('$N<b$')
def parkfield_pca(L_r_factor=3.0):
# a test example using the parkfield earthquake. let's throw in some rtree as well.
# catfromANSS(lon=[135., 150.], lat=[30., 41.5], minMag=4.0, dates0=[dtm.datetime(2005,01,01, tzinfo=tzutc), None], Nmax=None, fout=None, rec_array=True):
#
d_lambda = 1.76
#
parkfield = {
'dt': dtm.datetime(2004,
9,
28,
17,
15,
24,
tzinfo=pytz.timezone('UTC')),
'lat': 35.815,
'lon': -120.374,
'mag': 5.96
}
L_r = 10.**(parkfield['mag'] / 2. - d_lambda)
d_lat = L_r_factor * L_r / 111.1
d_lon = L_r_factor * L_r * math.cos(deg2rad * parkfield['lat']) / 111.1
print "d_lat, d_lon: ", d_lat, d_lon
#
x = parkfield['lon']
y = parkfield['lat']
parkfield_cat_prams = {
'lon': [x - d_lon, x + d_lon],
'lat': [y - d_lat, y + d_lon],
'minMag':
1.5,
'dates0': [
dtm.datetime(2004, 9, 28, tzinfo=pytz.timezone('UTC')),
dtm.datetime(2010, 9, 28, tzinfo=pytz.timezone('UTC'))
],
'Nmax':
None,
'fout':
None,
'rec_array':
True
}
#
cat = atp.catfromANSS(**parkfield_cat_prams)
#
# i still don't get what this does...
#my_pca = PCA(numpy.array(zip(cat['lon'], cat['lat'])))
my_pca = ptp.yoda_pca(zip(cat['lon'],
cat['lat'])) # returns (eig_vals, eig_vecs)
e_vals = my_pca[0]
e_vecs = numpy.array(my_pca[1])
#
e_vals_n = e_vals / min(e_vals)
#
print "e_vecs:", e_vecs[0][0], e_vecs[0][1], e_vecs[1][0], e_vecs[1][1]
circle_xy = simple_circle(x=x, y=y, r=L_r * L_r_factor / 111.1)
#
# a rotational transformation:
# elliptical distribution; a = r, b = {something < a}. this is distinct from the equal-area transform, in which a>r.
# note that for this transform, the initial rate-density is adjusted to the new (surface projection) area.
mu_x, mu_y = [numpy.mean(col) for col in zip(*circle_xy)]
#print "means: ", mu_x, mu_y
#circle_xy_prime = numpy.dot([[rw[0]-mu_x, rw[1]-mu_y] for rw in circle_xy], e_vecs_prime)
circle_xy_prime = [[rw[0] - mu_x, rw[1] - mu_y] for rw in circle_xy]
#
circle_xy_prime = [[
numpy.dot(rw, e_vecs[0]) * e_vals_n[0],
numpy.dot(rw, e_vecs[1]) * e_vals_n[1]
] for rw in circle_xy_prime]
#circle_xy_prime = numpy.dot([[rw[0] + mu_x, rw[1]+mu_y] for rw in circle_xy_prime], zip(*e_vecs))
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs.transpose())
circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs)
circle_xy_prime = [[j + mu_x, k + mu_y] for j, k in circle_xy_prime]
#circle_xy_prime = numpy.dot(circle_xy_prime, zip(*e_vecs))
#
plt.figure(0)
plt.clf()
plt.plot(cat['lon'], cat['lat'], '.')
plt.plot([x], [y], 'r*', ms=15)
Lry = abs(L_r_factor * L_r / 111.1)
Lrx = abs(Lry * math.cos(y * deg2rad))
#
Wts = [xx / max(e_vals) for xx in e_vals]
print "Wts: ", Wts
#e_vecs = e_vecs.transpose()
#plt.plot([x, x + Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
#plt.plot([x, x + Lrx*e_vecs[1][0]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.plot([x, x + Wts[0] * Lry * e_vecs[0][0]],
[y, y + Wts[0] * Lry * e_vecs[0][1]],
ls='-',
marker='o',
color='r')
plt.plot([x, x + Wts[1] * Lry * e_vecs[1][0]],
[y, y + Wts[1] * Lry * e_vecs[1][1]],
ls='-',
marker='^',
color='m')
plt.plot(*zip(*circle_xy), ls='-', marker='', lw=2.)
plt.plot(*zip(*circle_xy_prime),
ls='--',
color='r',
marker='',
lw=1.5,
alpha=.7,
zorder=11)
#plt.plot([x, x+Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[1][0]], ls='-', marker='o', color='r')
#plt.plot([x, x+Lrx*e_vecs[0][1]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.figure(1)
plt.clf()
#plt.plot([0., Lrx*e_vecs[0][0]], [0., Lry*e_vecs[0][1]], '.-')
#plt.plot([0., Lrx*e_vecs[1][0]], [0., Lry*e_vecs[1][1]], '.--')
plt.plot([0., e_vecs[0][0]], [0., e_vecs[0][1]], '.-')
plt.plot([0., e_vecs[1][0]], [0., e_vecs[1][1]], '.--')
#
return my_pca
def etas_auto(lon_center=None, lat_center=None, d_lat_0=.25, d_lon_0=.5, dt_0=10, Lr_map_factor=5.0, mc=2.5, mc_0=None, dm_cat=2.0, gridsize=.1, to_dt=None, mainshock_dt=None, fnameroot='etas_auto', catlen=5.0*365.0, d_lambda=1.76, doplot=False, show_legend=True):
'''
# , Lr_as_factor=.5
# a version of this exists also in ETASscripts.py, but for now let's just develop separately.
#
# a starter script to auto-select some parameters for an ETAS run. in practice, give this script a center location (probably a mainshock epicenter).
# the script will find the largest earthquake in that region and scale up an ETAS parameter set accordingly.
# d_lat_0, d_lon_0, dt_0 are the starting catalog parameters (largest earthquake in d_lat_0 x d_lon_0 x dt_0 cube).
#
# i think this is an earlier version of a similar (nearly identical?) script in ETASscripts
'''
#
lw=2.5
# catch some default value exceptions:
if dt_0==None: dt_0=10
#
_colors = mpl.rcParams['axes.color_cycle']
Lr_as_factor=.5
#
#if to_dt == None: to_dt = dtm.datetime.now(pytz.timezone('UTC'))
to_dt = (to_dt or dtm.datetime.now(pytz.timezone('UTC')))
mc_0 = (mc_0 or mc)
mainshock_dt = (mainshock_dt or to_dt)
#
if lon_center==None and lat_center==None:
# let's look for any large earthquake in the world. assume for this, mc
mc_0=6.0
lat_center = 0.
lon_center = 0.
d_lat_0 = 88.
d_lon_0 = -180.
#
# get a preliminary catalog:
#cat_0 = atp.catfromANSS(lon=[lon_center-d_lon_0, lon_center+d_lon_0], lat=[lat_center - d_lat_0, lat_center+d_lat_0], minMag=mc_0, dates0=[to_dt-dtm.timedelta(days=dt_0), to_dt], fout=None, rec_array=True)
cat_0 = atp.catfromANSS(lon=[lon_center-d_lon_0, lon_center+d_lon_0], lat=[lat_center - d_lat_0, lat_center+d_lat_0], minMag=mc_0, dates0=[to_dt-dtm.timedelta(days=dt_0), mainshock_dt], fout=None, rec_array=True)
# diagnostic: output catalog length
print("catalog length: %d" % len(cat_0))
#
# if there are no events, we probably are looking for a long range ETAS, so let's look for ALL events in the full catlen interval:
if len(cat_0)==1:
print("empty catalog. search over the whole catalog length...")
# note: when we return as a recarray, an empty array has length 1 (pull up an empty array and figure out the details some time).
cat_0 = atp.catfromANSS(lon=[lon_center-d_lon_0, lon_center+d_lon_0], lat=[lat_center - d_lat_0, lat_center+d_lat_0], minMag=mc_0, dates0=[to_dt-dtm.timedelta(days=catlen), to_dt], fout=None, rec_array=True)
#
#biggest_earthquake = filter(lambda x: x['mag']==max(cat_0['mag']), cat_0)[0]
print("fetch preliminary catalog; find *mainshock*")
mainshock = {cat_0.dtype.names[j]:x for j,x in enumerate(filter(lambda x: x['mag']==max(cat_0['mag']), cat_0)[0])}
#print "biggest event(s): ", mainshock
#
# now, get new map domain based on rupture length, etc.
#L_r = .5*10.0**(.5*mainshock['mag'] - 1.76)
L_r = Lr(mainshock['mag'], fact=Lr_as_factor, d_lambda=d_lambda)
d_lat = Lr_map_factor*L_r/lon2km
d_lon = Lr_map_factor*L_r/(lon2km*math.cos(deg2rad*mainshock['lat']))
lats = [mainshock['lat']-d_lat, mainshock['lat']+d_lat]
lons = [mainshock['lon']-d_lon, mainshock['lon']+d_lon]
print("lats, lons: ", lats, lons, L_r)
print("mainshock found: ", mainshock, ".\nNow, find aftershocks...")
#
#working_cat = atp.catfromANSS(lon=[mainshock['lon']-d_lon, mainshock['lon']+d_lon], lat=[mainshock['lat']-d_lat, mainshock['lat']+d_lat], minMag=mc, dates0=[to_dt-dtm.timedelta(days=catlen), to_dt], fout=None, rec_array=True)
primary_cat = atp.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=[to_dt-dtm.timedelta(days=catlen), to_dt], fout=None, rec_array=True)
#
if not doplot: return primary_cat
aftershock_cat = numpy.core.records.fromarrays(list(zip(*[rw for rw in primary_cat if rw['mag']>=(mainshock['mag']-dm_cat)])),dtype=primary_cat.dtype)
#
#cat_map = get_catalog_map(lats=lats, lons=lons, eq_cat = aftershock_cat)
cat_map = get_catalog_map(lats=lats, lons=lons)
#
# now, let's draw circles around (some of) these events. this will be a bit sloppy, since we need to convert coordinates from dist -> lat/lon -> map.
#
for k,ev in enumerate(aftershock_cat):
print("event: %d: " % k, ev)
for j,lr_fact in enumerate([.5, 1.0]):
lr = Lr(ev['mag'], fact=lr_fact, d_lambda=d_lambda)
#as_circle = circle_geo(lon0=ev['lon'], lat0=ev['lat'], R=lr*1000., d_theta=None, N=250, units_theta='deg', R_units='m')
#Xa, Ya = cat_map(*zip(*as_circle))
#
if j==0:
line_style = '--'
else:
line_style='-'
#
Xa, Ya = cat_map(*list(zip(*circle_geo(lon0=ev['lon'], lat0=ev['lat'], R=lr*1000., d_theta=None, N=250, units_theta='deg', R_units='m'))))
plt.plot(Xa, Ya, '%s' % line_style, zorder=7, color=_colors[k%len(_colors)], lw=lw)
x,y = cat_map(ev['lon'], ev['lat'])
ev_dtm = ev['event_date'].tolist()
lbl_str = 'm=%.2f, %d-%d-%d %d:%d:%d' % (ev['mag'], ev_dtm.year, ev_dtm.month, ev_dtm.day, ev_dtm.hour,ev_dtm.minute,ev_dtm.second)
#
# plot pre-mainshock events as squares, post-mainshock events as circles:
if ev['event_date']<mainshock['event_date']: marker_str = 's'
if ev['event_date']==mainshock['event_date']: marker_str = '*'
if ev['event_date']>mainshock['event_date']: marker_str = 'o'
#
plt.plot([x], [y], marker_str, ms=15.*ev['mag']/8.0, color=_colors[k%len(_colors)], label=lbl_str, zorder=7)
if show_legend: plt.legend(loc=0, numpoints=1)
plt.plot(*cat_map(primary_cat['lon'], primary_cat['lat']), marker='.', ls='', ms=3., zorder=5, alpha=.6)
#
# and for now, let's plot time-links (lines betwen sequential events):
for k, ev in enumerate(aftershock_cat[1:]):
X,Y = cat_map([aftershock_cat[k]['lon'], ev['lon']], [aftershock_cat[k]['lat'], ev['lat']])
plt.plot(X,Y, '.-', ms=8, color=_colors[k%len(_colors)])
#
f=plt.figure(1)
plt.clf()
ax3d = f.add_axes([.1, .1, .8, .8], projection='3d')
ax3d.plot(aftershock_cat['lon'], aftershock_cat['lat'], aftershock_cat['event_date_float'], 'o-')
#z = [mpd.date2num(dt.tolist()) for dt in aftershock_cat['event_date']]
#ax3d.plot(aftershock_cat['lat'][1:], aftershock_cat['lon'][1:], [x for x in (aftershock_cat['event_date_float'][1:]-mainshock['event_date_float'])], 'o-')
#ax3d.plot(aftershock_cat['lat'][1:], aftershock_cat['lon'][1:], [math.log10(x-z[0]) for x in z[1:]], 'o-')
ax3d.set_ylabel('latitude')
ax3d.set_xlabel('longitude')
ax3d.set_zlabel('time')
#print "times: ", [x-z[0] for x in z[1:]]
#
f=plt.figure(2)
plt.clf()
ax3d2 = f.add_axes([.1, .1, .8, .8], projection='3d')
ax3d2.plot(aftershock_cat['lon'][1:], aftershock_cat['lat'][1:], numpy.log10(aftershock_cat['event_date_float'][1:]-aftershock_cat['event_date_float'][0]), 'o-')
#
ax3d2.set_ylabel('latitude')
ax3d2.set_xlabel('longitude')
ax3d2.set_zlabel('$log(\\Delta t)$')
#
print("log(dt): ", numpy.log10(aftershock_cat['event_date_float'][1:]-aftershock_cat['event_date_float'][0]))
#
f=plt.figure(3)
plt.clf()
ax3d3 = f.add_axes([.1, .1, .8, .8], projection='3d')
ax3d3.plot(aftershock_cat['lon'][0:], aftershock_cat['lat'][0:], aftershock_cat['depth'][0:], 'o-')
ax3d3.set_ylabel('latitude')
ax3d3.set_xlabel('longitude')
ax3d3.set_zlabel('depth $z$')
#
#print "mainshock: ", mainshock, mainshock['event_date']
cat = atp.catfromANSS(lon=lons, lat=lats, minMag=mc, dates0=[mpd.num2date(mainshock['event_date_float']-1.0), to_dt], fout=None, rec_array=True)
f=plt.figure(4)
plt.clf()
ax3d = f.add_axes([.1, .1, .8, .8], projection='3d')
ax3d.plot(cat['lon'], cat['lat'], cat['event_date_float'], 'o')
#
#
ax3d.set_title('All quakes, lat, lon, time')
ax3d.set_ylabel('latitude')
ax3d.set_xlabel('longitude')
ax3d.set_zlabel('time')
#return aftershock_cat
return primary_cat
def doSumatra(mc=5.0, targmag=9.1, rbavelen=None, bigmag=9.5, intlist=None, catname='cats/sumatra.cat', refreshcat=False, plotevents=False, mt=7.55, lons=[92.0, 106.0],lats=[-9.0, 10.0], lfactor=.5):
# get a bunch of sumatra fits from rbTectoFigs. we'll want analysis on 0, 2, 3
#sumatra_catalog = rfp.sumatraQuad()
cl1=atp.catfromANSS(lon=lons,lat=lats, minMag=mc, dates0=[dtm.datetime(1990,1,1, tzinfo=pytz.timezone('UTC')), dtm.datetime.now(pytz.timezone('UTC'))], fout=None)
catalogs=[]
#
c1=eqp.eqcatalog(cl1)
c1.mc=mc
c1.mt=mt
c1.targmag = targmag
#
c1.cat.sort(key = lambda x:x[0])
dlambda=1.76
Lr=10.0**(targmag/2.0 - dlambda)
latlonMS=[3.316, 95.854] #mainshock
#mainshock = [dtm.datetime(2004, 12, 26, 0, 58, 53, 449995, tzinfo=pytz.timezone('UTC')), 3.295, 95.982, 9.0, 30.0]
mainshock=c1.getMainEvent()
mainshock[3]=9.1 #ANSS seems to be listing sumatra as 9.0 lately.
mevIndex = mainshock[-1]
#
foreshocks = []
foreshocks+=[mainshock[:]]
foreshocks+=[mainshock[:]]
#foreshocks+=[[dtm.datetime(2000, 6, 4, 16, 28, 26, 170001, tzinfo=pytz.timezone('UTC')), -4.721, 102.087, 7.9, 33.0]]
#foreshocks+=[[dtm.datetime(2001, 2, 13, 19, 28, 30, 260001, tzinfo=pytz.timezone('UTC')), -4.68, 102.562, 7.4, 36.0]]
#foreshocks+=[[dtm.datetime(2002, 11, 2, 1, 26, 10, 699996, tzinfo=pytz.timezone('UTC')), 2.824, 96.085, 7.4, 30.0]]
#
# adjust mainshock:
foreshocks[0][1]+=0.
foreshocks[0][2]-=0.
#
for i in xrange(mevIndex+1,len(c1.getcat(0))):
if c1.getcat(0)[i][3]>=8.0:
foreshocks+=[c1.getcat(0)[i]]
print "large aftershock: ", c1.getcat(0)[i]
#
interesting_quads = [0,2,3] # we know these are interesting...
interesting_quads = range(len(foreshocks))
for i in interesting_quads:
#thiscatnum=i
#thisfignum=i
thismag=foreshocks[i][3]
thisLr = 10.0**(thismag/2.0 - dlambda)
#
#if i>0:
fsLatLon=[foreshocks[i][1], foreshocks[i][2]]
#if i>0: c1.subcats+=[['r%d' %i, circularcat(c1.getcat(0), latlon=fsLatLon, Rkm=Lr*lfactor)]]
catalogs+=[eqp.eqcatalog(rfp.circularcat(c1.getcat(0), latlon=fsLatLon, Rkm=Lr*lfactor))]
catalogs[-1].mainshock = catalogs[-1].getMainEvent()
#
# some stuff we know:
catalogs[0].mainshock[3] = targmag # or 9.1... but anss sometimes reports this differently in think.
#
#
fignum0=11
current_fig = plt.figure(fignum0)
#
for i_catalog, catalog in enumerate(catalogs):
#
#mev = catalog.getMainEvent()
mev = catalog.mainshock # which we've added in this script. otherwise, use catalog.getMainEvent()
print "mev: ", mev
interval_len = rfp.winlen(m=mev[3], mc=mc, mt=mt, doInt=True)
avlen = max(1,int(interval_len/10))
#
current_fig = plt.figure()
plt.clf()
catalog.rbomoriQuadPlot(targmag=mev[3], mc=mc, weighted=False, fignum=current_fig.number)
#
current_fig = plt.figure()
plt.clf()
catalog.rbomoriQuadPlot(targmag=mev[3], mc=mc, weighted=True, fignum=current_fig.number)
#
# poisson ratio limits:
these_axes = current_fig.axes
if len(these_axes)>=3:
ax_rb = these_axes[2]
# poisson ratio bit:
# this doesn't vary much, so for now just do a regular gr guess:
n_rb_poisson = 10**(mev[3]-mc-2.0)
poisson_ratio_0 = list(ratio_sigma(n_rb_poisson, 1.0))
poisson_ratio_1 = list(ratio_sigma(n_rb_poisson, .5))
print 'sigma_ratios: ', poisson_ratio_0, poisson_ratio_1
#plt.figure(fignum0-1)
for y in poisson_ratio_0 + poisson_ratio_1:
#print catalog.getcat(0)[0]
ax_rb.plot([catalog.getcat(0)[0][0], catalog.getcat(0)[-1][0]], [y, y], 'm-', lw=2)
#
#rbratios = catalog.getNRBratios(intervals=None, winlen=interval_len, delta_t=1, reverse=False)
#rb_values = map(operator.itemgetter(4), rbratios)
#mean_rbs = [numpy.mean(rb_values[max(i-interval_len, 0):i+1]) for i, x in enumerate(rb_values)]
#for i,x in enumerate(mean_rbs): rbratios[i]+=[x]
#
#return rbratios
#
#fits = get_ratio_fits(ratios=rbratios, Nfits=[interval_len])
#plotses = plot_ratio_fits(fits, new_figs=False, fignum0=fignum0)
#fignum0+=4
#
#return (rbratios, rbratio_fits, rbf_plot)
return None
def parkfield_pca(L_r_factor=3.0):
# a test example using the parkfield earthquake. let's throw in some rtree as well.
# catfromANSS(lon=[135., 150.], lat=[30., 41.5], minMag=4.0, dates0=[dtm.datetime(2005,01,01, tzinfo=tzutc), None], Nmax=None, fout=None, rec_array=True):
#
d_lambda = 1.76
#
parkfield={'dt':dtm.datetime(2004,9,28,17,15,24, tzinfo=pytz.timezone('UTC')), 'lat':35.815, 'lon':-120.374, 'mag':5.96}
L_r = 10.**(parkfield['mag']/2. - d_lambda)
d_lat = L_r_factor * L_r/111.1
d_lon = L_r_factor * L_r*math.cos(deg2rad*parkfield['lat'])/111.1
print "d_lat, d_lon: ", d_lat, d_lon
#
x=parkfield['lon']
y=parkfield['lat']
parkfield_cat_prams = {'lon':[x-d_lon, x+d_lon], 'lat':[y-d_lat, y+d_lon], 'minMag':1.5, 'dates0':[dtm.datetime(2004,9,28, tzinfo=pytz.timezone('UTC')), dtm.datetime(2010,9,28, tzinfo=pytz.timezone('UTC'))], 'Nmax':None, 'fout':None, 'rec_array':True}
#
cat = atp.catfromANSS(**parkfield_cat_prams)
#
# i still don't get what this does...
#my_pca = PCA(numpy.array(zip(cat['lon'], cat['lat'])))
my_pca = ptp.yoda_pca(zip(cat['lon'], cat['lat'])) # returns (eig_vals, eig_vecs)
e_vals = my_pca[0]
e_vecs = numpy.array(my_pca[1])
#
e_vals_n = e_vals/min(e_vals)
#
print "e_vecs:", e_vecs[0][0], e_vecs[0][1], e_vecs[1][0], e_vecs[1][1]
circle_xy = simple_circle(x=x, y=y, r=L_r*L_r_factor/111.1)
#
# a rotational transformation:
# elliptical distribution; a = r, b = {something < a}. this is distinct from the equal-area transform, in which a>r.
# note that for this transform, the initial rate-density is adjusted to the new (surface projection) area.
mu_x, mu_y = [numpy.mean(col) for col in zip(*circle_xy)]
#print "means: ", mu_x, mu_y
#circle_xy_prime = numpy.dot([[rw[0]-mu_x, rw[1]-mu_y] for rw in circle_xy], e_vecs_prime)
circle_xy_prime = [[rw[0]-mu_x, rw[1]-mu_y] for rw in circle_xy]
#
circle_xy_prime = [[numpy.dot(rw,e_vecs[0])*e_vals_n[0], numpy.dot(rw, e_vecs[1])*e_vals_n[1]] for rw in circle_xy_prime]
#circle_xy_prime = numpy.dot([[rw[0] + mu_x, rw[1]+mu_y] for rw in circle_xy_prime], zip(*e_vecs))
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs.transpose())
circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs)
circle_xy_prime = [[j+mu_x, k+mu_y] for j,k in circle_xy_prime]
#circle_xy_prime = numpy.dot(circle_xy_prime, zip(*e_vecs))
#
plt.figure(0)
plt.clf()
plt.plot(cat['lon'], cat['lat'], '.')
plt.plot([x], [y], 'r*', ms=15)
Lry = abs(L_r_factor * L_r/111.1)
Lrx = abs(Lry*math.cos(y*deg2rad))
#
Wts = [xx/max(e_vals) for xx in e_vals]
print "Wts: ", Wts
#e_vecs = e_vecs.transpose()
#plt.plot([x, x + Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
#plt.plot([x, x + Lrx*e_vecs[1][0]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.plot([x, x + Wts[0]*Lry*e_vecs[0][0]], [y, y + Wts[0]*Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
plt.plot([x, x + Wts[1]*Lry*e_vecs[1][0]], [y, y + Wts[1]*Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.plot(*zip(*circle_xy), ls='-', marker='', lw=2.)
plt.plot(*zip(*circle_xy_prime), ls='--', color='r', marker='', lw=1.5, alpha=.7, zorder=11)
#plt.plot([x, x+Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[1][0]], ls='-', marker='o', color='r')
#plt.plot([x, x+Lrx*e_vecs[0][1]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.figure(1)
plt.clf()
#plt.plot([0., Lrx*e_vecs[0][0]], [0., Lry*e_vecs[0][1]], '.-')
#plt.plot([0., Lrx*e_vecs[1][0]], [0., Lry*e_vecs[1][1]], '.--')
plt.plot([0., e_vecs[0][0]], [0., e_vecs[0][1]], '.-')
plt.plot([0., e_vecs[1][0]], [0., e_vecs[1][1]], '.--')
#
return my_pca
def parkfield_pca(L_r_factor=3.0):
# a test example using the parkfield earthquake. let's throw in some rtree as well.
# catfromANSS(lon=[135., 150.], lat=[30., 41.5], minMag=4.0, dates0=[dtm.datetime(2005,01,01, tzinfo=tzutc), None], Nmax=None, fout=None, rec_array=True):
#
d_lambda = 1.76
#
parkfield = {
'dt': dtm.datetime(2004,
9,
28,
17,
15,
24,
tzinfo=pytz.timezone('UTC')),
'lat': 35.815,
'lon': -120.374,
'mag': 5.96
}
L_r = 10.**(parkfield['mag'] / 2. - d_lambda)
d_lat = L_r_factor * L_r / 111.1
d_lon = L_r_factor * L_r * math.cos(deg2rad * parkfield['lat']) / 111.1
print("d_lat, d_lon: ", d_lat, d_lon)
#
x_pf = parkfield['lon']
y_pf = parkfield['lat']
parkfield_cat_prams = {
'lon': [x_pf - d_lon, x_pf + d_lon],
'lat': [y_pf - d_lat, y_pf + d_lon],
'minMag':
1.5,
'dates0': [
dtm.datetime(2004, 9, 28, tzinfo=pytz.timezone('UTC')),
dtm.datetime(2010, 9, 28, tzinfo=pytz.timezone('UTC'))
],
'Nmax':
None,
'fout':
None,
'rec_array':
True
}
#
cat = atp.catfromANSS(**parkfield_cat_prams)
#
# i still don't get what this does...
#my_pca = PCA(numpy.array(zip(cat['lon'], cat['lat'])))
my_pca = ptp.yoda_pca(list(zip(
cat['lon'], cat['lat']))) # returns (eig_vals, eig_vecs)
e_vals = my_pca[0]
e_vecs = numpy.array(my_pca[1])
#
#e_vals_n = e_vals/min(e_vals)
e_vals_n = numpy.array([min(4.0, x / min(e_vals)) for x in e_vals])
#
print("e_vecs:", e_vecs[0][0], e_vecs[0][1], e_vecs[1][0], e_vecs[1][1])
circle_xy = simple_circle(x=x, y=y, r=L_r * L_r_factor / 111.1)
#T = numpy.array([[e_vals_n[j]*x for x in rw] for j,rw in enumerate(e_vecs)])
#circle_xy_prime = numpy.dot(circle_xy,T.transpose()) # note: this syntax will add [x,y] to all members of circle_xy_prime like [[a+x,b+y], [a+x,b+y],...]
T = numpy.dot([[e_vals_n[0], 0.], [0., e_vals_n[1]]], e_vecs)
circle_xy_prime = numpy.dot(circle_xy, T)
#circle_xy_prime = numpy.dot(circle_xy, [[e_vals_n[0],0.],[0., e_vals_n[1]]])
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs)
#circle_xy = numpy.array(circle_xy)+numpy.array([x,y])
circle_xy_prime = [[j + x_pf, k + y_pf] for j, k in circle_xy_prime]
circle_xy = [[j + x_pf, k + y_pf] for j, k in circle_xy]
#print "T: ", T
#
# a rotational transformation:
# elliptical distribution; a = r, b = {something < a}. this is distinct from the equal-area transform, in which a>r.
# note that for this transform, the initial rate-density is adjusted to the new (surface projection) area.
#mu_x, mu_y = [numpy.mean(col) for col in zip(*circle_xy)]
#print "means: ", mu_x, mu_y
#circle_xy_prime = [[rw[0]-mu_x, rw[1]-mu_y] for rw in circle_xy]
#
#circle_xy_prime = [[numpy.dot(rw,e_vecs[0])*e_vals_n[0], numpy.dot(rw, e_vecs[1])*e_vals_n[1]] for rw in circle_xy_prime]
#circle_xy_prime = numpy.dot([[rw[0] + mu_x, rw[1]+mu_y] for rw in circle_xy_prime], zip(*e_vecs))
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs.transpose())
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs)
#circle_xy_prime = [[j+mu_x, k+mu_y] for j,k in circle_xy_prime]
#circle_xy_prime = numpy.dot(circle_xy_prime, zip(*e_vecs))
#
plt.figure(0)
plt.clf()
plt.plot(cat['lon'], cat['lat'], '.', label='parkfield cat')
plt.plot([x_pf], [y_pf], 'r*', ms=15)
plt.legend(loc=0, numpoints=1)
#
plot_axes = (L_r / 111.2) * numpy.array([e_vecs[0], [0., 0.], e_vecs[1]
]) + numpy.array([x_pf, y_pf])
plt.plot(*zip(*plot_axes), ls='-', marker='o')
#
Lry = abs(L_r_factor * L_r / 111.1)
Lrx = abs(Lry * math.cos(y_pf * deg2rad))
#
Wts = [xx / max(e_vals) for xx in e_vals]
print("Wts: ", Wts)
#e_vecs = e_vecs.transpose()
#plt.plot([x, x + Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
#plt.plot([x, x + Lrx*e_vecs[1][0]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
'''
#<<<<<<< HEAD
plt.plot([x, x + Wts[0]*Lry*e_vecs[0][0]], [y, y + Wts[0]*Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
plt.plot([x, x + Wts[1]*Lry*e_vecs[1][0]], [y, y + Wts[1]*Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.plot(*list(zip(*circle_xy)), ls='-', marker='', lw=2.)
plt.plot(*list(zip(*circle_xy_prime)), ls='--', color='r', marker='', lw=1.5, alpha=.7, zorder=11)
#=======
'''
#ax1 = numpy.dot(
plt.plot([x_pf, x_pf + Wts[0] * Lry * e_vecs[0][0]],
[y_pf, y_pf + Wts[0] * Lry * e_vecs[0][1]],
ls='-',
marker='o',
color='r')
plt.plot([x_pf, x_pf + Wts[1] * Lry * e_vecs[1][0]],
[y_pf, y_pf + Wts[1] * Lry * e_vecs[1][1]],
ls='-',
marker='^',
color='m')
plt.plot(*zip(*circle_xy), ls='-', marker='', lw=2.)
plt.plot(*zip(*circle_xy_prime),
ls='--',
color='r',
marker='',
lw=1.5,
alpha=.7,
zorder=11)
#plt.plot([x, x+Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[1][0]], ls='-', marker='o', color='r')
#plt.plot([x, x+Lrx*e_vecs[0][1]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.figure(1)
plt.clf()
#plt.plot([0., Lrx*e_vecs[0][0]], [0., Lry*e_vecs[0][1]], '.-')
#plt.plot([0., Lrx*e_vecs[1][0]], [0., Lry*e_vecs[1][1]], '.--')
#plt.plot([0., e_vecs[0][0]], [0., e_vecs[0][1]], '.-')
#plt.plot([0., e_vecs[1][0]], [0., e_vecs[1][1]], '.--')
plt.plot(*zip([0., 0.], e_vecs[0]), marker='.', ls='--')
plt.plot(*zip([0., 0.], e_vecs[1]), marker='^', ls='-')
plt.plot(*zip([0., 0.], T[0]), marker='.', ls='--')
plt.plot(*zip([0., 0.], T[1]), marker='^', ls='-')
#
return my_pca
def parkfield_pca(L_r_factor=3.0):
# a test example using the parkfield earthquake. let's throw in some rtree as well.
# catfromANSS(lon=[135., 150.], lat=[30., 41.5], minMag=4.0, dates0=[dtm.datetime(2005,01,01, tzinfo=tzutc), None], Nmax=None, fout=None, rec_array=True):
#
d_lambda = 1.76
#
parkfield={'dt':dtm.datetime(2004,9,28,17,15,24, tzinfo=pytz.timezone('UTC')), 'lat':35.815, 'lon':-120.374, 'mag':5.96}
L_r = 10.**(parkfield['mag']/2. - d_lambda)
d_lat = L_r_factor * L_r/111.1
d_lon = L_r_factor * L_r*math.cos(deg2rad*parkfield['lat'])/111.1
print("d_lat, d_lon: ", d_lat, d_lon)
#
x_pf=parkfield['lon']
y_pf=parkfield['lat']
parkfield_cat_prams = {'lon':[x_pf-d_lon, x_pf+d_lon], 'lat':[y_pf-d_lat, y_pf+d_lon], 'minMag':1.5, 'dates0':[dtm.datetime(2004,9,28, tzinfo=pytz.timezone('UTC')), dtm.datetime(2010,9,28, tzinfo=pytz.timezone('UTC'))], 'Nmax':None, 'fout':None, 'rec_array':True}
#
cat = atp.catfromANSS(**parkfield_cat_prams)
#
# i still don't get what this does...
#my_pca = PCA(numpy.array(zip(cat['lon'], cat['lat'])))
my_pca = ptp.yoda_pca(list(zip(cat['lon'], cat['lat']))) # returns (eig_vals, eig_vecs)
e_vals = my_pca[0]
e_vecs = numpy.array(my_pca[1])
#
#e_vals_n = e_vals/min(e_vals)
e_vals_n = numpy.array([min(4.0, x/min(e_vals)) for x in e_vals])
#
print("e_vecs:", e_vecs[0][0], e_vecs[0][1], e_vecs[1][0], e_vecs[1][1])
circle_xy = simple_circle(x=x, y=y, r=L_r*L_r_factor/111.1)
#T = numpy.array([[e_vals_n[j]*x for x in rw] for j,rw in enumerate(e_vecs)])
#circle_xy_prime = numpy.dot(circle_xy,T.transpose()) # note: this syntax will add [x,y] to all members of circle_xy_prime like [[a+x,b+y], [a+x,b+y],...]
T = numpy.dot([[e_vals_n[0],0.],[0., e_vals_n[1]]], e_vecs)
circle_xy_prime = numpy.dot(circle_xy, T)
#circle_xy_prime = numpy.dot(circle_xy, [[e_vals_n[0],0.],[0., e_vals_n[1]]])
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs)
#circle_xy = numpy.array(circle_xy)+numpy.array([x,y])
circle_xy_prime = [[j+x_pf, k+y_pf] for j,k in circle_xy_prime]
circle_xy = [[j+x_pf, k+y_pf] for j,k in circle_xy]
#print "T: ", T
#
# a rotational transformation:
# elliptical distribution; a = r, b = {something < a}. this is distinct from the equal-area transform, in which a>r.
# note that for this transform, the initial rate-density is adjusted to the new (surface projection) area.
#mu_x, mu_y = [numpy.mean(col) for col in zip(*circle_xy)]
#print "means: ", mu_x, mu_y
#circle_xy_prime = [[rw[0]-mu_x, rw[1]-mu_y] for rw in circle_xy]
#
#circle_xy_prime = [[numpy.dot(rw,e_vecs[0])*e_vals_n[0], numpy.dot(rw, e_vecs[1])*e_vals_n[1]] for rw in circle_xy_prime]
#circle_xy_prime = numpy.dot([[rw[0] + mu_x, rw[1]+mu_y] for rw in circle_xy_prime], zip(*e_vecs))
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs.transpose())
#circle_xy_prime = numpy.dot(circle_xy_prime, e_vecs)
#circle_xy_prime = [[j+mu_x, k+mu_y] for j,k in circle_xy_prime]
#circle_xy_prime = numpy.dot(circle_xy_prime, zip(*e_vecs))
#
plt.figure(0)
plt.clf()
plt.plot(cat['lon'], cat['lat'], '.', label='parkfield cat')
plt.plot([x_pf], [y_pf], 'r*', ms=15)
plt.legend(loc=0, numpoints=1)
#
plot_axes = (L_r/111.2)*numpy.array([e_vecs[0], [0.,0.], e_vecs[1]]) + numpy.array([x_pf, y_pf])
plt.plot(*zip(*plot_axes), ls='-', marker='o')
#
Lry = abs(L_r_factor * L_r/111.1)
Lrx = abs(Lry*math.cos(y_pf*deg2rad))
#
Wts = [xx/max(e_vals) for xx in e_vals]
print("Wts: ", Wts)
#e_vecs = e_vecs.transpose()
#plt.plot([x, x + Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
#plt.plot([x, x + Lrx*e_vecs[1][0]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
'''
#<<<<<<< HEAD
plt.plot([x, x + Wts[0]*Lry*e_vecs[0][0]], [y, y + Wts[0]*Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
plt.plot([x, x + Wts[1]*Lry*e_vecs[1][0]], [y, y + Wts[1]*Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.plot(*list(zip(*circle_xy)), ls='-', marker='', lw=2.)
plt.plot(*list(zip(*circle_xy_prime)), ls='--', color='r', marker='', lw=1.5, alpha=.7, zorder=11)
#=======
'''
#ax1 = numpy.dot(
plt.plot([x_pf, x_pf + Wts[0]*Lry*e_vecs[0][0]], [y_pf, y_pf + Wts[0]*Lry*e_vecs[0][1]], ls='-', marker='o', color='r')
plt.plot([x_pf, x_pf + Wts[1]*Lry*e_vecs[1][0]], [y_pf, y_pf + Wts[1]*Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.plot(*zip(*circle_xy), ls='-', marker='', lw=2.)
plt.plot(*zip(*circle_xy_prime), ls='--', color='r', marker='', lw=1.5, alpha=.7, zorder=11)
#plt.plot([x, x+Lrx*e_vecs[0][0]], [y, y + Lry*e_vecs[1][0]], ls='-', marker='o', color='r')
#plt.plot([x, x+Lrx*e_vecs[0][1]], [y, y + Lry*e_vecs[1][1]], ls='-', marker='^', color='m')
plt.figure(1)
plt.clf()
#plt.plot([0., Lrx*e_vecs[0][0]], [0., Lry*e_vecs[0][1]], '.-')
#plt.plot([0., Lrx*e_vecs[1][0]], [0., Lry*e_vecs[1][1]], '.--')
#plt.plot([0., e_vecs[0][0]], [0., e_vecs[0][1]], '.-')
#plt.plot([0., e_vecs[1][0]], [0., e_vecs[1][1]], '.--')
plt.plot(*zip([0.,0.],e_vecs[0]), marker='.', ls='--')
plt.plot(*zip([0.,0.],e_vecs[1]),marker='^', ls='-')
plt.plot(*zip([0.,0.],T[0]), marker='.', ls='--')
plt.plot(*zip([0.,0.],T[1]),marker='^', ls='-')
#
return my_pca