def main():
"""
NAME
lowes.py
DESCRIPTION
Plots Lowes spectrum for input IGRF-like file
SYNTAX
lowes.py [options]
OPTIONS:
-h prints help message and quits
-f FILE specify file name with input data
-d date specify desired date
-r read desired dates from file
-n normalize to dipole term
INPUT FORMAT:
l m g h
"""
norm=0
if '-f' in sys.argv:
ind=sys.argv.index('-f')
file=sys.argv[ind+1]
data=numpy.loadtxt(file)
dates=[2000]
elif '-d' in sys.argv:
ind=sys.argv.index('-d')
dates=[float(sys.argv[ind+1])]
elif '-r' in sys.argv:
ind=sys.argv.index('-r')
dates=numpy.loadtxt(sys.argv[ind+1])
if '-n' in sys.argv: norm=1
if len(sys.argv)!=0 and '-h' in sys.argv:
print main.__doc__
sys.exit()
pylab.semilogy()
pylab.xlabel('Degree (l)')
pylab.ylabel('Power ($\mu$T$^2$)')
labels=[]
for date in dates:
if date!=2000:
gh=pmag.doigrf(0,0,0,date,coeffs=1)
data=pmag.unpack(gh)
Ls,Rs=pmag.lowes(data)
labels.append(str(date))
print date,Rs[0]
if norm==1:
Rs=numpy.array(Rs)/Rs[0]
#pylab.plot(Ls,Rs,'ro')
pylab.plot(Ls,Rs,linewidth=2)
pylab.legend(labels,'upper right')
pylab.draw()
raw_input()
def main():
"""
NAME
lowes.py
DESCRIPTION
Plots Lowes spectrum for input IGRF-like file
SYNTAX
lowes.py [options]
OPTIONS:
-h prints help message and quits
-f FILE specify file name with input data
-d date specify desired date
-r read desired dates from file
-n normalize to dipole term
INPUT FORMAT:
l m g h
"""
norm = 0
if '-f' in sys.argv:
ind = sys.argv.index('-f')
file = sys.argv[ind + 1]
data = numpy.loadtxt(file)
dates = [2000]
elif '-d' in sys.argv:
ind = sys.argv.index('-d')
dates = [float(sys.argv[ind + 1])]
elif '-r' in sys.argv:
ind = sys.argv.index('-r')
dates = numpy.loadtxt(sys.argv[ind + 1])
if '-n' in sys.argv: norm = 1
if len(sys.argv) != 0 and '-h' in sys.argv:
print main.__doc__
sys.exit()
pylab.semilogy()
pylab.xlabel('Degree (l)')
pylab.ylabel('Power ($\mu$T$^2$)')
labels = []
for date in dates:
if date != 2000:
gh = pmag.doigrf(0, 0, 0, date, coeffs=1)
data = pmag.unpack(gh)
Ls, Rs = pmag.lowes(data)
labels.append(str(date))
print date, Rs[0]
if norm == 1:
Rs = numpy.array(Rs) / Rs[0]
#pylab.plot(Ls,Rs,'ro')
pylab.plot(Ls, Rs, linewidth=2)
pylab.legend(labels, 'upper right')
pylab.draw()
raw_input()
def main():
"""
NAME
igrf.py
DESCRIPTION
This program calculates igrf field values
using the routine of Malin and Barraclough (1981)
based on d/igrfs from 1900 to 2010.
between 1900 and 1000BCE, it uses CALS3K.4, ARCH3K.1 , or PFM9K
Prior to 1000BCE, it uses CALS10k-4b
Calculates reference field vector at specified location and time.
SYNTAX
igrf.py [-h] [-i] -f FILE [< filename]
OPTIONS:
-h prints help message and quits
-i for interactive data entry
-f FILE specify file name with input data
-F FILE specify output file name
-ages MIN MAX INCR: specify age minimum in years (+/- AD), maximum and increment, default is line by line
-loc LAT LON; specify location, default is line by line
-alt ALT; specify altitude in km, default is sealevel (0)
-plt; make a plot of the time series
-sav, saves plot and quits
-fmt [pdf,jpg,eps,svg] specify format for output figure (default is svg)
-mod [arch3k,cals3k,pfm9k] specify model for 3ka to 1900 AD, default is cals3k.4b
NB: program uses IGRF12 for dates 1900 to 2015.
INPUT FORMAT
interactive entry:
date: decimal year
alt: altitude in km
lat: positive north
lon: positive east
for file entry:
space delimited string: date alt lat long
OUTPUT FORMAT
Declination Inclination Intensity (nT) date alt lat long
"""
plot,fmt=0,'svg'
plt=0
if '-fmt' in sys.argv:
ind=sys.argv.index('-fmt')
fmt=sys.argv[ind+1]
if len(sys.argv)!=0 and '-h' in sys.argv:
print main.__doc__
sys.exit()
if '-mod' in sys.argv:
ind=sys.argv.index('-mod')
mod=sys.argv[ind+1]
else: mod='cals3k'
if '-f' in sys.argv:
ind=sys.argv.index('-f')
file=sys.argv[ind+1]
input=numpy.loadtxt(file)
elif '-i' in sys.argv:
while 1:
try:
line=[]
line.append(float(raw_input("Decimal year: <cntrl-D to quit> ")))
alt=raw_input("Elevation in km [0] ")
if alt=="":alt="0"
line.append(float(alt))
line.append(float(raw_input("Latitude (positive north) ")))
line.append(float(raw_input("Longitude (positive east) ")))
if mod=='':
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0])
else:
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0],mod=mod)
Dir=pmag.cart2dir((x,y,z))
print '%8.2f %8.2f %8.0f'%(Dir[0],Dir[1],f)
except EOFError:
print "\n Good-bye\n"
sys.exit()
elif '-ages' in sys.argv:
ind=sys.argv.index('-ages')
agemin=float(sys.argv[ind+1])
agemax=float(sys.argv[ind+2])
ageincr=float(sys.argv[ind+3])
if '-loc' in sys.argv:
ind=sys.argv.index('-loc')
lat=float(sys.argv[ind+1])
lon=float(sys.argv[ind+2])
else:
print "must specify lat/lon if using age range option"
sys.exit()
if '-alt' in sys.argv:
ind=sys.argv.index('-alt')
alt=float(sys.argv[ind+1])
else: alt=0
ages=numpy.arange(agemin,agemax,ageincr)
lats=numpy.ones(len(ages))*lat
lons=numpy.ones(len(ages))*lon
alts=numpy.ones(len(ages))*alt
input=numpy.array([ages,alts,lats,lons]).transpose()
else:
input=numpy.loadtxt(sys.stdin,dtype=numpy.float)
if '-F' in sys.argv:
ind=sys.argv.index('-F')
outfile=sys.argv[ind+1]
out=open(outfile,'w')
else:outfile=""
if '-sav' in sys.argv:plot=1
if '-plt' in sys.argv:
plt=1
import matplotlib
matplotlib.use("TkAgg")
import pylab
pylab.ion()
Ages,Decs,Incs,Ints,VADMs=[],[],[],[],[]
for line in input:
if mod=='':
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0])
else:
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0],mod=mod)
Dir=pmag.cart2dir((x,y,z))
if outfile!="":
out.write('%8.2f %8.2f %8.0f %7.1f %7.1f %7.1f %7.1f\n'%(Dir[0],Dir[1],f,line[0],line[1],line[2],line[3]))
elif plt:
Ages.append(line[0])
if Dir[0]>180: Dir[0]=Dir[0]-360.0
Decs.append(Dir[0])
Incs.append(Dir[1])
Ints.append(f*1e-3)
VADMs.append(pmag.b_vdm(f*1e-9,line[2])*1e-21)
else:
print '%8.2f %8.2f %8.0f %7.1f %7.1f %7.1f %7.1f'%(Dir[0],Dir[1],f,line[0],line[1],line[2],line[3])
if plt:
fig=pylab.figure(num=1,figsize=(7,9))
fig.add_subplot(411)
pylab.plot(Ages,Decs)
pylab.ylabel('Declination ($^{\circ}$)')
fig.add_subplot(412)
pylab.plot(Ages,Incs)
pylab.ylabel('Inclination ($^{\circ}$)')
fig.add_subplot(413)
pylab.plot(Ages,Ints)
pylab.ylabel('Intensity ($\mu$T)')
fig.add_subplot(414)
pylab.plot(Ages,VADMs)
pylab.ylabel('VADMs (ZAm$^2$)')
pylab.xlabel('Ages')
if plot==0:
pylab.draw()
ans=raw_input("S[a]ve to save figure, <Return> to quit ")
if ans=='a':
pylab.savefig('igrf.'+fmt)
print 'Figure saved as: ','igrf.'+fmt
else:
pylab.savefig('igrf.'+fmt)
print 'Figure saved as: ','igrf.'+fmt
sys.exit()
def main():
"""
NAME
igrf.py
DESCRIPTION
This program calculates igrf field values
using the routine of Malin and Barraclough (1981)
based on d/igrfs from 1900 to 2010.
between 1900 and 1000BCE, it uses CALS3K.4, ARCH3K.1
Prior to 1000BCE, it uses PFM9k or CALS10k-4b
Calculates reference field vector at specified location and time.
SYNTAX
igrf.py [-h] [-i] -f FILE [< filename]
OPTIONS:
-h prints help message and quits
-i for interactive data entry
-f FILE specify file name with input data
-F FILE specify output file name
-ages MIN MAX INCR: specify age minimum in years (+/- AD), maximum and increment, default is line by line
-loc LAT LON; specify location, default is line by line
-alt ALT; specify altitude in km, default is sealevel (0)
-plt; make a plot of the time series
-sav, saves plot and quits
-fmt [pdf,jpg,eps,svg] specify format for output figure (default is svg)
-mod [arch3k,cals3k,pfm9k,hfm10k,cals10k_2,shadif14k,cals10k] specify model for 3ka to 1900 AD, default is cals10k
NB: program uses IGRF12 for dates 1900 to 2015.
INPUT FORMAT
interactive entry:
date: decimal year
alt: altitude in km
lat: positive north
lon: positive east
for file entry:
space delimited string: date alt lat long
OUTPUT FORMAT
Declination Inclination Intensity (nT) date alt lat long
MODELS: ARCH3K: (Korte et al., 2009);CALS3K (Korte & Contable, 2011); CALS10k (is .1b of Korte et al., 2011); PFM9K (Nilsson et al., 2014); HFM10k (is HFM.OL1.A1 of Constable et al., 2016); CALS10k_2 (is cals10k.2 of Constable et al., 2016), SHADIF14k (SHA.DIF.14K of Pavon-Carrasco et al., 2014).
"""
plot, fmt = 0, 'svg'
plt = 0
if '-fmt' in sys.argv:
ind = sys.argv.index('-fmt')
fmt = sys.argv[ind + 1]
if len(sys.argv) != 0 and '-h' in sys.argv:
print(main.__doc__)
sys.exit()
if '-mod' in sys.argv:
ind = sys.argv.index('-mod')
mod = sys.argv[ind + 1]
else:
mod = 'cals10k'
if '-f' in sys.argv:
ind = sys.argv.index('-f')
file = sys.argv[ind + 1]
input = numpy.loadtxt(file)
elif '-i' in sys.argv:
while 1:
try:
line = []
line.append(float(input("Decimal year: <cntrl-D to quit> ")))
alt = input("Elevation in km [0] ")
if alt == "": alt = "0"
line.append(float(alt))
line.append(float(input("Latitude (positive north) ")))
line.append(float(input("Longitude (positive east) ")))
if mod == '':
x, y, z, f = pmag.doigrf(line[3] % 360., line[2], line[1],
line[0])
else:
x, y, z, f = pmag.doigrf(line[3] % 360.,
line[2],
line[1],
line[0],
mod=mod)
Dir = pmag.cart2dir((x, y, z))
print('%8.2f %8.2f %8.0f' % (Dir[0], Dir[1], f))
except EOFError:
print("\n Good-bye\n")
sys.exit()
elif '-ages' in sys.argv:
ind = sys.argv.index('-ages')
agemin = float(sys.argv[ind + 1])
agemax = float(sys.argv[ind + 2])
ageincr = float(sys.argv[ind + 3])
if '-loc' in sys.argv:
ind = sys.argv.index('-loc')
lat = float(sys.argv[ind + 1])
lon = float(sys.argv[ind + 2])
else:
print("must specify lat/lon if using age range option")
sys.exit()
if '-alt' in sys.argv:
ind = sys.argv.index('-alt')
alt = float(sys.argv[ind + 1])
else:
alt = 0
ages = numpy.arange(agemin, agemax, ageincr)
lats = numpy.ones(len(ages)) * lat
lons = numpy.ones(len(ages)) * lon
alts = numpy.ones(len(ages)) * alt
input = numpy.array([ages, alts, lats, lons]).transpose()
else:
input = numpy.loadtxt(sys.stdin, dtype=numpy.float)
if '-F' in sys.argv:
ind = sys.argv.index('-F')
outfile = sys.argv[ind + 1]
out = open(outfile, 'w')
else:
outfile = ""
if '-sav' in sys.argv: plot = 1
if '-plt' in sys.argv:
plt = 1
import matplotlib
matplotlib.use("TkAgg")
import pylab
pylab.ion()
Ages, Decs, Incs, Ints, VADMs = [], [], [], [], []
for line in input:
#if mod=='':
# x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0])
#else:
# x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0],mod=mod)
x, y, z, f = pmag.doigrf(line[3] % 360.,
line[2],
line[1],
line[0],
mod=mod)
Dir = pmag.cart2dir((x, y, z))
if outfile != "":
out.write('%8.2f %8.2f %8.0f %7.1f %7.1f %7.1f %7.1f\n' %
(Dir[0], Dir[1], f, line[0], line[1], line[2], line[3]))
elif plt:
Ages.append(line[0])
if Dir[0] > 180: Dir[0] = Dir[0] - 360.0
Decs.append(Dir[0])
Incs.append(Dir[1])
Ints.append(f * 1e-3)
VADMs.append(pmag.b_vdm(f * 1e-9, line[2]) * 1e-21)
else:
print('%8.2f %8.2f %8.0f %7.1f %7.1f %7.1f %7.1f' %
(Dir[0], Dir[1], f, line[0], line[1], line[2], line[3]))
if plt:
fig = pylab.figure(num=1, figsize=(7, 9))
fig.add_subplot(411)
pylab.plot(Ages, Decs)
pylab.ylabel('Declination ($^{\circ}$)')
fig.add_subplot(412)
pylab.plot(Ages, Incs)
pylab.ylabel('Inclination ($^{\circ}$)')
fig.add_subplot(413)
pylab.plot(Ages, Ints)
pylab.ylabel('Intensity ($\mu$T)')
fig.add_subplot(414)
pylab.plot(Ages, VADMs)
pylab.ylabel('VADMs (ZAm$^2$)')
pylab.xlabel('Ages')
if plot == 0:
pylab.draw()
ans = input("S[a]ve to save figure, <Return> to quit ")
if ans == 'a':
pylab.savefig('igrf.' + fmt)
print('Figure saved as: ', 'igrf.' + fmt)
else:
pylab.savefig('igrf.' + fmt)
print('Figure saved as: ', 'igrf.' + fmt)
sys.exit()
def main():
"""
NAME
igrf.py
DESCRIPTION
This program calculates igrf field values
using the routine of Malin and Barraclough (1981)
based on d/igrfs from 1900 to 2010.
between 1900 and 1000BCE, it uses CALS3K.4, ARCH3K.1
Prior to 1000BCE, it uses PFM9k or CALS10k-4b
Calculates reference field vector at specified location and time.
SYNTAX
igrf.py [-h] [-i] -f FILE [< filename]
OPTIONS:
-h prints help message and quits
-i for interactive data entry
-f FILE specify file name with input data
-fgh FILE specify file with custom field coefficients in format: l m g h
-F FILE specify output file name
-ages MIN MAX INCR: specify age minimum in years (+/- AD), maximum and increment, default is line by line
-loc LAT LON; specify location, default is line by line
-alt ALT; specify altitude in km, default is sealevel (0)
-plt; make a plot of the time series
-sav, saves plot and quits
-fmt [pdf,jpg,eps,svg] specify format for output figure (default is svg)
-mod [arch3k,cals3k,pfm9k,hfm10k,cals10k_2,shadif14k,cals10k] specify model for 3ka to 1900 AD, default is cals10k
NB: program uses IGRF12 for dates 1900 to 2015.
INPUT FORMAT
interactive entry:
date: decimal year
alt: altitude in km
lat: positive north
lon: positive east
for file entry:
space delimited string: date alt lat long
OUTPUT FORMAT
Declination Inclination Intensity (nT) date alt lat long
MODELS: ARCH3K: (Korte et al., 2009);CALS3K (Korte & Contable, 2011); CALS10k (is .1b of Korte et al., 2011); PFM9K (Nilsson et al., 2014); HFM10k (is HFM.OL1.A1 of Constable et al., 2016); CALS10k_2 (is cals10k.2 of Constable et al., 2016), SHADIF14k (SHA.DIF.14K of Pavon-Carrasco et al., 2014).
"""
plot,fmt=0,'svg'
mod,alt,plt,lat,lon='cals10k',0,0,0,0
if '-loc' in sys.argv:
ind=sys.argv.index('-loc')
lat=float(sys.argv[ind+1])
lon=float(sys.argv[ind+2])
if '-alt' in sys.argv:
ind=sys.argv.index('-alt')
alt=float(sys.argv[ind+1])
if '-fmt' in sys.argv:
ind=sys.argv.index('-fmt')
fmt=sys.argv[ind+1]
if len(sys.argv)!=0 and '-h' in sys.argv:
print(main.__doc__)
sys.exit()
if '-mod' in sys.argv:
ind=sys.argv.index('-mod')
mod=sys.argv[ind+1]
if '-fgh' in sys.argv:
ind=sys.argv.index('-fgh')
ghfile=sys.argv[ind+1]
lmgh=numpy.loadtxt(ghfile)
gh=[]
lmgh=numpy.loadtxt(ghfile).transpose()
gh.append(lmgh[2][0])
for i in range(1,lmgh.shape[1]):
gh.append(lmgh[2][i])
gh.append(lmgh[3][i])
mod='custom'
inp=[[0,alt,lat,lon]]
elif '-f' in sys.argv:
ind=sys.argv.index('-f')
file=sys.argv[ind+1]
inp=numpy.loadtxt(file)
elif '-i' in sys.argv:
while 1:
try:
line=[]
if mod!='custom':
line.append(float(input("Decimal year: <cntrl-D to quit> ")))
else:
line.append(0)
alt=input("Elevation in km [0] ")
if alt=="":alt="0"
line.append(float(alt))
line.append(float(input("Latitude (positive north) ")))
line.append(float(input("Longitude (positive east) ")))
if mod=='':
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0])
elif mod=='custom':
x,y,z,f = pmag.docustom(line[3]%360.,line[2], line[1], gh)
else:
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0],mod=mod)
Dir=pmag.cart2dir((x,y,z))
print('%8.2f %8.2f %8.0f'%(Dir[0],Dir[1],f))
except EOFError:
print("\n Good-bye\n")
sys.exit()
elif '-ages' in sys.argv:
ind=sys.argv.index('-ages')
agemin=float(sys.argv[ind+1])
agemax=float(sys.argv[ind+2])
ageincr=float(sys.argv[ind+3])
ages=numpy.arange(agemin,agemax,ageincr)
lats=numpy.ones(len(ages))*lat
lons=numpy.ones(len(ages))*lon
alts=numpy.ones(len(ages))*alt
inp=numpy.array([ages,alts,lats,lons]).transpose()
else:
inp=numpy.loadtxt(sys.stdin,dtype=numpy.float)
if '-F' in sys.argv:
ind=sys.argv.index('-F')
outfile=sys.argv[ind+1]
out=open(outfile,'w')
else:outfile=""
if '-sav' in sys.argv:plot=1
if '-plt' in sys.argv:
plt=1
import matplotlib
matplotlib.use("TkAgg")
import pylab
pylab.ion()
Ages,Decs,Incs,Ints,VADMs=[],[],[],[],[]
for line in inp:
if mod!='custom':
x,y,z,f=pmag.doigrf(line[3]%360.,line[2],line[1],line[0],mod=mod)
else:
x,y,z,f = pmag.docustom(line[3]%360.,line[2], line[1], gh)
Dir=pmag.cart2dir((x,y,z))
if outfile!="":
out.write('%8.2f %8.2f %8.0f %7.1f %7.1f %7.1f %7.1f\n'%(Dir[0],Dir[1],f,line[0],line[1],line[2],line[3]))
elif plt:
Ages.append(line[0])
if Dir[0]>180: Dir[0]=Dir[0]-360.0
Decs.append(Dir[0])
Incs.append(Dir[1])
Ints.append(f*1e-3)
VADMs.append(pmag.b_vdm(f*1e-9,line[2])*1e-21)
else:
print('%8.2f %8.2f %8.0f %7.1f %7.1f %7.1f %7.1f'%(Dir[0],Dir[1],f,line[0],line[1],line[2],line[3]))
if plt:
fig=pylab.figure(num=1,figsize=(7,9))
fig.add_subplot(411)
pylab.plot(Ages,Decs)
pylab.ylabel('Declination ($^{\circ}$)')
fig.add_subplot(412)
pylab.plot(Ages,Incs)
pylab.ylabel('Inclination ($^{\circ}$)')
fig.add_subplot(413)
pylab.plot(Ages,Ints)
pylab.ylabel('Intensity ($\mu$T)')
fig.add_subplot(414)
pylab.plot(Ages,VADMs)
pylab.ylabel('VADMs (ZAm$^2$)')
pylab.xlabel('Ages')
if plot==0:
pylab.draw()
ans=input("S[a]ve to save figure, <Return> to quit ")
if ans=='a':
pylab.savefig('igrf.'+fmt)
print('Figure saved as: ','igrf.'+fmt)
else:
pylab.savefig('igrf.'+fmt)
print('Figure saved as: ','igrf.'+fmt)
sys.exit()