def testY2J(self):
"""tpm.y2j() => year number into a scalar Julian date."""
# This is just the inverse of testJ2Y.
self.assertAlmostEqual(2400000.5, tpm.y2j(1858.879452054794), 12)
self.assertAlmostEqual(2433282.42345905, tpm.y2j(1950.002530024794), 12)
self.assertAlmostEqual(2451545.0, tpm.y2j(2000.004098360656), 12)
self.assertAlmostEqual(2445700.5, tpm.y2j(1984.002732240437), 12)
def testY2J(self):
"""tpm.y2j() => year number into a scalar Julian date."""
# This is just the inverse of testJ2Y.
self.assertAlmostEqual(2400000.5, tpm.y2j(1858.879452054794), 12)
self.assertAlmostEqual(2433282.42345905, tpm.y2j(1950.002530024794),
12)
self.assertAlmostEqual(2451545.0, tpm.y2j(2000.004098360656), 12)
self.assertAlmostEqual(2445700.5, tpm.y2j(1984.002732240437), 12)
def testToObsAzElDateJ2000ep2000(self):
"""P and V: J2000 (~ICRS) 1991.25 => ObsAzEl Date J2000 ep J2000."""
# Set s2=TPM_S13 and ep2=J2000 in
# c_tests/test_conversion_with_pm.c.
ra = []
dec = []
pmra = []
pmdec = []
px = []
f = open(hip_data, "r")
for i in f:
x = [float(j) for j in i.split()]
ra.append(tpm.d2r(x[0]))
dec.append(tpm.d2r(x[1]))
# Milli-arcsec/year to arcsec/century.
pmra.append( ((x[2]/1000.0) / math.cos(tpm.d2r(x[1]))) * 100.0 )
pmdec.append( (x[3]/1000.0) * 100.0)
px.append(x[4])
f.close()
s1 = tpm.TPM_S06
ep = tpm.y2j(1991.25)
eq = tpm.J2000
s2 = tpm.TPM_S13
ep2 = tpm.J2000
f = open(os.path.join(c_tests_dir,
"hipicrsep1991_ObsAzElDateJ2000ep2000.txt"),
"r")
pvec = tpm.PVEC()
tstate = get_tstate()
for i in xrange(len(ra)):
v6 = tpm.cat2v6(ra[i], dec[i], pmra[i], pmdec[i], px[i], 0.0,
tpm.CJ)
pvec[s1] = v6
tpm.tpm(pvec, s1, s2, ep, eq, tstate)
v6 = pvec[s2]
tpm.proper_motion(v6, ep2, ep)
d = tpm.v62cat(v6, tpm.CJ)
x = [float(j) for j in f.readline().strip().split()]
self.assertAlmostEqual(tpm.r2d(tpm.r2r(d['alpha'])), x[0], 8)
self.assertAlmostEqual(tpm.r2d(d['delta']), x[1], 8)
self.assertAlmostEqual(d['pma'], x[2], 4)
self.assertAlmostEqual(d['pmd'], x[3], 4)
self.assertAlmostEqual(d['px'], x[4], 8)
self.assertAlmostEqual(d['rv'], x[5], 2)
f.close()
def testConvertv6(self):
"""ConvertV6: J2000 (~ICRS) 1991.25 => FK4 B1950 ep 1950.0."""
# Set s2=TPM_S05 and ep2=B1950 in
# c_tests/test_conversion_with_pm.c.
ra = []
dec = []
pmra = []
pmdec = []
px = []
f = open(hip_data_icrs, "r")
for i in f:
x = [float(j) for j in i.split()]
ra.append(tpm.d2r(x[0]))
dec.append(tpm.d2r(x[1]))
# Milli-arcsec/year to arcsec/century.
pmra.append(((x[2] / 1000.0) / math.cos(tpm.d2r(x[1]))) * 100.0)
pmdec.append((x[3] / 1000.0) * 100.0)
px.append(x[4])
f.close()
s1 = tpm.TPM_S06
ep = tpm.y2j(1991.25)
eq = tpm.J2000
s2 = tpm.TPM_S05
ep2 = tpm.B1950
f = open(os.path.join(c_tests_dir, "hipicrsep1991_fk4B1950ep1950.txt"),
"r")
v6_l = []
for i in range(len(ra)):
v6 = tpm.cat2v6(ra[i], dec[i], pmra[i], pmdec[i], px[i], 0.0,
tpm.CJ)
v6_l.append(v6)
v6_out = convert.convertv6(v6_l, epoch=ep, equinox=eq, s1=s1, s2=s2)
for v in v6_out:
tpm.proper_motion(v, ep2, ep)
d = tpm.v62cat(v, tpm.CJ)
x = [float(j) for j in f.readline().strip().split()]
self.assertAlmostEqual(tpm.r2d(tpm.r2r(d['alpha'])), x[0], 8)
self.assertAlmostEqual(tpm.r2d(d['delta']), x[1], 8)
self.assertAlmostEqual(d['pma'], x[2], 4)
self.assertAlmostEqual(d['pmd'], x[3], 4)
self.assertAlmostEqual(d['px'], x[4], 8)
self.assertAlmostEqual(d['rv'], x[5], 2)
f.close()
def testConvertv6(self):
"""ConvertV6: J2000 (~ICRS) 1991.25 => FK4 B1950 ep 1950.0."""
# Set s2=TPM_S05 and ep2=B1950 in
# c_tests/test_conversion_with_pm.c.
ra = []
dec = []
pmra = []
pmdec = []
px = []
f = open(hip_data_icrs, "r")
for i in f:
x = [float(j) for j in i.split()]
ra.append(tpm.d2r(x[0]))
dec.append(tpm.d2r(x[1]))
# Milli-arcsec/year to arcsec/century.
pmra.append(((x[2] / 1000.0) / math.cos(tpm.d2r(x[1]))) * 100.0)
pmdec.append((x[3] / 1000.0) * 100.0)
px.append(x[4])
f.close()
s1 = tpm.TPM_S06
ep = tpm.y2j(1991.25)
eq = tpm.J2000
s2 = tpm.TPM_S05
ep2 = tpm.B1950
f = open(os.path.join(c_tests_dir, "hipicrsep1991_fk4B1950ep1950.txt"), "r")
v6_l = []
for i in range(len(ra)):
v6 = tpm.cat2v6(ra[i], dec[i], pmra[i], pmdec[i], px[i], 0.0, tpm.CJ)
v6_l.append(v6)
v6_out = convert.convertv6(v6_l, epoch=ep, equinox=eq, s1=s1, s2=s2)
for v in v6_out:
tpm.proper_motion(v, ep2, ep)
d = tpm.v62cat(v, tpm.CJ)
x = [float(j) for j in f.readline().strip().split()]
self.assertAlmostEqual(tpm.r2d(tpm.r2r(d["alpha"])), x[0], 8)
self.assertAlmostEqual(tpm.r2d(d["delta"]), x[1], 8)
self.assertAlmostEqual(d["pma"], x[2], 4)
self.assertAlmostEqual(d["pmd"], x[3], 4)
self.assertAlmostEqual(d["px"], x[4], 8)
self.assertAlmostEqual(d["rv"], x[5], 2)
f.close()