def __init__(self, file_name=CMR_path):
"""
initial the color magnitude data
:param file_name: file name of the color magnitude data
:returns: Cmr class with property data array [z,griz ...]
"""
try:
self.data = np.loadtxt(file_name)
except IOError:
warning("Fail to open cmr file: {0:s}".format(file_name))
exit(1)
def get_magnitude(self, zid, band):
"""
get the magnitude of given redshift and band
:param zid: redshift row to return
:param band: color band: [griz]
:returns: [z,griz ...]
"""
try:
mid = CMR_BANDS[band] + np.arange(0, CMR_NL, len(CMR_BANDS), np.dtype("I4")) + 1
return self.data[zid, mid]
except NameError:
warning("wrong color band: {0:s}".format(band))
except IndexError:
warning("wrong number of L*")
def update_method(self, catalog, method):
"""
Update the method in database based on catalog
:param catalog: catalog name contains ID which is detected by method, "all" will set method to 1 for all
:param method: method want to update to 1
"""
if method not in P_method:
warning("Wrong method name")
exit()
if catalog == "all":
self.cur.execute("UPDATE {0:s} SET {1:s} = 1".format(self.table, method))
else:
cid = np.loadtxt(catalog, dtype=int)
for i in cid:
self.cur.execute("UPDATE {0:s} SET {1:s} = 1 WHERE id = ?".format(self.table, method), (cid,))
self.conn.commit()
def fit_pz(self, ax, color, fit_x=0):
"""
fit the P(z) data for given color
:param ax: axis to plot
:param color: detection color
:param fit_x: 0 for fix x, 1 for fit x
"""
if self.method is None:
warning("error! no method defined")
return [0, 0]
self.color = color
self.fit_x = fit_x
x = self.pz[self.method][color][:, 0]
y = self.pz[self.method][color][:, 1]
if fit_x == 0:
fit = axplot.g3g(x, y, n_sigma=NSIGMA)
else:
fit = axplot.g3gf(x, y, n_sigma=NSIGMA)
y = np.max(y) * np.exp(-(x - fit[0]) ** 2 / 2. / fit[1] ** 2)
ax.plot(x, y, '--')
self.fit_result = fit